biography of albert einstein english

Albert Einstein

One of the most influential scientists of the 20 th century, Albert Einstein was a physicist who developed the theory of relativity.

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Early life, family, and education, einstein’s iq, patent clerk, inventions and discoveries, nobel prize in physics, wives and children, travel diaries, becoming a u.s. citizen, einstein and the atomic bomb, time travel and quantum theory, personal life, death and final words, einstein’s brain, einstein in books and movies: "oppenheimer" and more, who was albert einstein.

Albert Einstein was a German mathematician and physicist who developed the special and general theories of relativity. In 1921, he won the Nobel Prize in Physics for his explanation of the photoelectric effect. In the following decade, he immigrated to the United States after being targeted by the German Nazi Party. His work also had a major impact on the development of atomic energy. In his later years, Einstein focused on unified field theory. He died in April 1955 at age 76. With his passion for inquiry, Einstein is generally considered the most influential physicist of the 20 th century.

FULL NAME: Albert Einstein BORN: March 14, 1879 DIED: April 18, 1955 BIRTHPLACE: Ulm, Württemberg, Germany SPOUSES: Mileva Einstein-Maric (1903-1919) and Elsa Einstein (1919-1936) CHILDREN: Lieserl, Hans, and Eduard ASTROLOGICAL SIGN: Pisces

Albert Einstein was born on March 14, 1879, in Ulm, Württemberg, Germany. He grew up in a secular Jewish family. His father, Hermann Einstein, was a salesman and engineer who, with his brother, founded Elektrotechnische Fabrik J. Einstein & Cie, a Munich-based company that mass-produced electrical equipment. Einstein’s mother, the former Pauline Koch, ran the family household. Einstein had one sister, Maja, born two years after him.

Einstein attended elementary school at the Luitpold Gymnasium in Munich. However, he felt alienated there and struggled with the institution’s rigid pedagogical style. He also had what were considered speech challenges. However, he developed a passion for classical music and playing the violin, which would stay with him into his later years. Most significantly, Einstein’s youth was marked by deep inquisitiveness and inquiry.

Toward the end of the 1880s, Max Talmud, a Polish medical student who sometimes dined with the Einstein family, became an informal tutor to young Einstein. Talmud had introduced his pupil to a children’s science text that inspired Einstein to dream about the nature of light. Thus, during his teens, Einstein penned what would be seen as his first major paper, “The Investigation of the State of Aether in Magnetic Fields.”

Hermann relocated the family to Milan, Italy, in the mid-1890s after his business lost out on a major contract. Einstein was left at a relative’s boarding house in Munich to complete his schooling at the Luitpold.

Faced with military duty when he turned of age, Einstein allegedly withdrew from classes, using a doctor’s note to excuse himself and claim nervous exhaustion. With their son rejoining them in Italy, his parents understood Einstein’s perspective but were concerned about his future prospects as a school dropout and draft dodger.

Einstein was eventually able to gain admission into the Swiss Federal Institute of Technology in Zurich, specifically due to his superb mathematics and physics scores on the entrance exam. He was still required to complete his pre-university education first and thus attended a high school in Aarau, Switzerland, helmed by Jost Winteler. Einstein lived with the schoolmaster’s family and fell in love with Winteler’s daughter Marie. Einstein later renounced his German citizenship and became a Swiss citizen at the dawn of the new century.

Einstein’s intelligence quotient was estimated to be around 160, but there are no indications he was ever actually tested.

Psychologist David Wechsler didn’t release the first edition of the WAIS cognitive test, which evolved into the WAIS-IV test commonly used today, until 1955—shortly before Einstein’s death. The maximum score of the current version is 160, with an IQ of 135 or higher ranking in the 99 th percentile.

Magazine columnist Marilyn vos Savant has the highest-ever recorded IQ at 228 and was featured in the Guinness Book of World Records in the late 1980s. However, Guinness discontinued the category because of debates about testing accuracy. According to Parade , individuals believed to have higher IQs than Einstein include Leonardo Da Vinci , Marie Curie , Nikola Tesla , and Nicolaus Copernicus .

After graduating from university, Einstein faced major challenges in terms of finding academic positions, having alienated some professors over not attending class more regularly in lieu of studying independently.

Einstein eventually found steady work in 1902 after receiving a referral for a clerk position in a Swiss patent office. While working at the patent office, Einstein had the time to further explore ideas that had taken hold during his university studies and thus cemented his theorems on what would be known as the principle of relativity.

In 1905—seen by many as a “miracle year” for the theorist—Einstein had four papers published in the Annalen der Physik , one of the best-known physics journals of the era. Two focused on the photoelectric effect and Brownian motion. The two others, which outlined E=MC 2 and the special theory of relativity, were defining for Einstein’s career and the course of the study of physics.

As a physicist, Einstein had many discoveries, but he is perhaps best known for his theory of relativity and the equation E=MC 2 , which foreshadowed the development of atomic power and the atomic bomb.

Theory of Relativity

Einstein first proposed a special theory of relativity in 1905 in his paper “On the Electrodynamics of Moving Bodies,” which took physics in an electrifying new direction. The theory explains that space and time are actually connected, and Einstein called this joint structure space-time.

By November 1915, Einstein completed the general theory of relativity, which accounted for gravity’s relationship to space-time. Einstein considered this theory the culmination of his life research. He was convinced of the merits of general relativity because it allowed for a more accurate prediction of planetary orbits around the sun, which fell short in Isaac Newton ’s theory. It also offered a more expansive, nuanced explanation of how gravitational forces worked.

Einstein’s assertions were affirmed via observations and measurements by British astronomers Sir Frank Dyson and Sir Arthur Eddington during the 1919 solar eclipse, and thus a global science icon was born. Today, the theories of relativity underpin the accuracy of GPS technology, among other phenomena.

Even so, Einstein did make one mistake when developing his general theory, which naturally predicted the universe is either expanding or contracting. Einstein didn’t believe this prediction initially, instead holding onto the belief that the universe was a fixed, static entity. To account for, this he factored in a “cosmological constant” to his equation. His later theories directly contracted this idea and asserted that the universe could be in a state of flux. Then, astronomer Edwin Hubble deduced that we indeed inhabit an expanding universe. Hubble and Einstein met at the Mount Wilson Observatory near Los Angeles in 1931.

Decades after Einstein’s death, in 2018, a team of scientists confirmed one aspect of Einstein’s general theory of relativity: that the light from a star passing close to a black hole would be stretched to longer wavelengths by the overwhelming gravitational field. Tracking star S2, their measurements indicated that the star’s orbital velocity increased to over 25 million kph as it neared the supermassive black hole at the center of the galaxy, its appearance shifting from blue to red as its wavelengths stretched to escape the pull of gravity.

Einstein’s E=MC²

Einstein’s 1905 paper on the matter-energy relationship proposed the equation E=MC²: the energy of a body (E) is equal to the mass (M) of that body times the speed of light squared (C²). This equation suggested that tiny particles of matter could be converted into huge amounts of energy, a discovery that heralded atomic power.

Famed quantum theorist Max Planck backed up the assertions of Einstein, who thus became a star of the lecture circuit and academia, taking on various positions before becoming director of the Kaiser Wilhelm Institute for Physics (today is known as the Max Planck Institute for Physics) from 1917 to 1933.

In 1921, Einstein won the Nobel Prize in Physics for his explanation of the photoelectric effect, since his ideas on relativity were still considered questionable. He wasn’t actually given the award until the following year due to a bureaucratic ruling, and during his acceptance speech, he still opted to speak about relativity.

Einstein married Mileva Maric on January 6, 1903. While attending school in Zurich, Einstein met Maric, a Serbian physics student. Einstein continued to grow closer to Maric, but his parents were strongly against the relationship due to her ethnic background.

Nonetheless, Einstein continued to see her, with the two developing a correspondence via letters in which he expressed many of his scientific ideas. Einstein’s father passed away in 1902, and the couple married shortly thereafter.

Einstein and Mavic had three children. Their daughter, Lieserl, was born in 1902 before their wedding and might have been later raised by Maric’s relatives or given up for adoption. Her ultimate fate and whereabouts remain a mystery. The couple also had two sons: Hans Albert Einstein, who became a well-known hydraulic engineer, and Eduard “Tete” Einstein, who was diagnosed with schizophrenia as a young man.

The Einsteins’ marriage would not be a happy one, with the two divorcing in 1919 and Maric having an emotional breakdown in connection to the split. Einstein, as part of a settlement, agreed to give Maric any funds he might receive from possibly winning the Nobel Prize in the future.

During his marriage to Maric, Einstein had also begun an affair some time earlier with a cousin, Elsa Löwenthal . The couple wed in 1919, the same year of Einstein’s divorce. He would continue to see other women throughout his second marriage, which ended with Löwenthal’s death in 1936.

In his 40s, Einstein traveled extensively and journaled about his experiences. Some of his unfiltered private thoughts are shared two volumes of The Travel Diaries of Albert Einstein .

The first volume , published in 2018, focuses on his five-and-a-half month trip to the Far East, Palestine, and Spain. The scientist started a sea journey to Japan in Marseille, France, in autumn of 1922, accompanied by his second wife, Elsa. They journeyed through the Suez Canal, then to Sri Lanka, Singapore, Hong Kong, Shanghai, and Japan. The couple returned to Germany via Palestine and Spain in March 1923.

The second volume , released in 2023, covers three months that he spent lecturing and traveling in Argentina, Uruguay, and Brazil in 1925.

The Travel Diaries contain unflattering analyses of the people he came across, including the Chinese, Sri Lankans, and Argentinians, a surprise coming from a man known for vehemently denouncing racism in his later years. In an entry for November 1922, Einstein refers to residents of Hong Kong as “industrious, filthy, lethargic people.”

In 1933, Einstein took on a position at the Institute for Advanced Study in Princeton, New Jersey, where he would spend the rest of his life.

At the time the Nazis, led by Adolf Hitler , were gaining prominence with violent propaganda and vitriol in an impoverished post-World War I Germany. The Nazi Party influenced other scientists to label Einstein’s work “Jewish physics.” Jewish citizens were barred from university work and other official jobs, and Einstein himself was targeted to be killed. Meanwhile, other European scientists also left regions threatened by Germany and immigrated to the United States, with concern over Nazi strategies to create an atomic weapon.

Not long after moving and beginning his career at IAS, Einstein expressed an appreciation for American meritocracy and the opportunities people had for free thought, a stark contrast to his own experiences coming of age. In 1935, Einstein was granted permanent residency in his adopted country and became an American citizen five years later.

In America, Einstein mostly devoted himself to working on a unified field theory, an all-embracing paradigm meant to unify the varied laws of physics. However, during World War II, he worked on Navy-based weapons systems and made big monetary donations to the military by auctioning off manuscripts worth millions.

In 1939, Einstein and fellow physicist Leo Szilard wrote to President Franklin D. Roosevelt to alert him of the possibility of a Nazi bomb and to galvanize the United States to create its own nuclear weapons.

The United States would eventually initiate the Manhattan Project , though Einstein wouldn’t take a direct part in its implementation due to his pacifist and socialist affiliations. Einstein was also the recipient of much scrutiny and major distrust from FBI director J. Edgar Hoover . In July 1940, the U.S. Army Intelligence office denied Einstein a security clearance to participate in the project, meaning J. Robert Oppenheimer and the scientists working in Los Alamos were forbidden from consulting with him.

Einstein had no knowledge of the U.S. plan to use atomic bombs in Japan in 1945. When he heard of the first bombing at Hiroshima, he reportedly said, “Ach! The world is not ready for it.”

Einstein became a major player in efforts to curtail usage of the A-bomb. The following year, he and Szilard founded the Emergency Committee of Atomic Scientists, and in 1947, via an essay for The Atlantic Monthly , Einstein espoused working with the United Nations to maintain nuclear weapons as a deterrent to conflict.

After World War II, Einstein continued to work on his unified field theory and key aspects of his general theory of relativity, including time travel, wormholes, black holes, and the origins of the universe.

However, he felt isolated in his endeavors since the majority of his colleagues had begun focusing their attention on quantum theory. In the last decade of his life, Einstein, who had always seen himself as a loner, withdrew even further from any sort of spotlight, preferring to stay close to Princeton and immerse himself in processing ideas with colleagues.

In the late 1940s, Einstein became a member of the National Association for the Advancement of Colored People (NAACP), seeing the parallels between the treatment of Jews in Germany and Black people in the United States. He corresponded with scholar and activist W.E.B. Du Bois as well as performer Paul Robeson and campaigned for civil rights, calling racism a “disease” in a 1946 Lincoln University speech.

Einstein was very particular about his sleep schedule, claiming he needed 10 hours of sleep per day to function well. His theory of relativity allegedly came to him in a dream about cows being electrocuted. He was also known to take regular naps. He is said to have held objects like a spoon or pencil in his hand while falling asleep. That way, he could wake up before hitting the second stage of sleep—a hypnagogic process believed to boost creativity and capture sleep-inspired ideas.

Although sleep was important to Einstein, socks were not. He was famous for refusing to wear them. According to a letter he wrote to future wife Elsa, he stopped wearing them because he was annoyed by his big toe pushing through the material and creating a hole.

One of the most recognizable photos of the 20 th century shows Einstein sticking out his tongue while leaving his 72 nd birthday party on March 14, 1951.

According to Discovery.com , Einstein was leaving his party at Princeton when a swarm of reporters and photographers approached and asked him to smile. Tired from doing so all night, he refused and rebelliously stuck his tongue out at the crowd for a moment before turning away. UPI photographer Arthur Sasse captured the shot.

Einstein was amused by the picture and ordered several prints to give to his friends. He also signed a copy of the photo that sold for $125,000 at a 2017 auction.

Einstein died on April 18, 1955, at age 76 at the University Medical Center at Princeton. The previous day, while working on a speech to honor Israel’s seventh anniversary, Einstein suffered an abdominal aortic aneurysm.

He was taken to the hospital for treatment but refused surgery, believing that he had lived his life and was content to accept his fate. “I want to go when I want,” he stated at the time. “It is tasteless to prolong life artificially. I have done my share, it is time to go. I will do it elegantly.”

According to the BBC, Einstein muttered a few words in German at the moment of his death. However, the nurse on duty didn’t speak German so their translation was lost forever.

In a 2014 interview , Life magazine photographer Ralph Morse said the hospital was swarmed by journalists, photographers, and onlookers once word of Einstein’s death spread. Morse decided to travel to Einstein’s office at the Institute for Advanced Studies, offering the superintendent alcohol to gain access. He was able to photograph the office just as Einstein left it.

After an autopsy, Einstein’s corpse was moved to a Princeton funeral home later that afternoon and then taken to Trenton, New Jersey, for a cremation ceremony. Morse said he was the only photographer present for the cremation, but Life managing editor Ed Thompson decided not to publish an exclusive story at the request of Einstein’s son Hans.

During Einstein’s autopsy, pathologist Thomas Stoltz Harvey had removed his brain, reportedly without his family’s consent, for preservation and future study by doctors of neuroscience.

However, during his life, Einstein participated in brain studies, and at least one biography claimed he hoped researchers would study his brain after he died. Einstein’s brain is now located at the Princeton University Medical Center. In keeping with his wishes, the rest of his body was cremated and the ashes scattered in a secret location.

In 1999, Canadian scientists who were studying Einstein’s brain found that his inferior parietal lobe, the area that processes spatial relationships, 3D-visualization, and mathematical thought, was 15 percent wider than in people who possess normal intelligence. According to The New York Times , the researchers believe it might help explain why Einstein was so intelligent.

In 2011, the Mütter Museum in Philadelphia received thin slices of Einstein’s brain from Dr. Lucy Rorke-Adams, a neuropathologist at the Children’s Hospital of Philadelphia, and put them on display. Rorke-Adams said she received the brain slides from Harvey.

Since Einstein’s death, a veritable mountain of books have been written on the iconic thinker’s life, including Einstein: His Life and Universe by Walter Isaacson and Einstein: A Biography by Jürgen Neffe, both from 2007. Einstein’s own words are presented in the collection The World As I See It .

Einstein has also been portrayed on screen. Michael Emil played a character called “The Professor,” clearly based on Einstein, in the 1985 film Insignificance —in which alternate versions of Einstein, Marilyn Monroe , Joe DiMaggio , and Joseph McCarthy cross paths in a New York City hotel.

Walter Matthau portrayed Einstein in the fictional 1994 comedy I.Q. , in which he plays matchmaker for his niece played by Meg Ryan . Einstein was also a character in the obscure comedy films I Killed Einstein, Gentlemen (1970) and Young Einstein (1988).

A much more historically accurate depiction of Einstein came in 2017, when he was the subject of the first season of Genius , a 10-part scripted miniseries by National Geographic. Johnny Flynn played a younger version of the scientist, while Geoffrey Rush portrayed Einstein in his later years after he had fled Germany. Ron Howard was the director.

Tom Conti plays Einstein in the 2023 biopic Oppenheimer , directed by Christopher Nolan and starring Cillian Murphy as scientist J. Robert Oppenheimer during his involvement with the Manhattan Project.

• The world is a dangerous place to live; not because of the people who are evil, but because of the people who don’t do anything about it.
• A question that sometimes drives me hazy: Am I or are the others crazy?
• A person who never made a mistake never tried anything new.
• Logic will get you from A to B. Imagination will take you everywhere.
• I want to go when I want. It is tasteless to prolong life artificially. I have done my share, it is time to go. I will do it elegantly.
• If you can’t explain it simply, you don’t understand it well enough.
• Nature shows us only the tail of the lion. But there is no doubt in my mind that the lion belongs with it even if he cannot reveal himself to the eye all at once because of his huge dimension. We see him only the way a louse sitting upon him would.
• [T]he distinction between past, present, and future is only an illusion, however persistent.
• Living in this “great age,” it is hard to understand that we belong to this mad, degenerate species, which imputes free will to itself. If only there were somewhere an island for the benevolent and the prudent! Then also I would want to be an ardent patriot.
• I, at any rate, am convinced that He [God] is not playing at dice.
• How strange is the lot of us mortals! Each of us is here for a brief sojourn; for what purpose he knows not, though he sometimes thinks he senses it.
• I regard class differences as contrary to justice and, in the last resort, based on force.
• I have never looked upon ease and happiness as ends in themselves—this critical basis I call the ideal of a pigsty. The ideals that have lighted my way, and time after time have given me new courage to face life cheerfully, have been Kindness, Beauty, and Truth.
• My political ideal is democracy. Let every man be respected as an individual and no man idolized. It is an irony of fate that I myself have been the recipient of excessive admiration and reverence from my fellow-beings, through no fault and no merit of my own.
• The most beautiful experience we can have is the mysterious. It is the fundamental emotion that stands at the cradle of true art and true science. Whoever does not know it and can no longer wonder, no longer marvel, is as good as dead, and his eyes are dimmed.
• An autocratic system of coercion, in my opinion, soon degenerates. For force always attracts men of low morality, and I believe it to be an invariable rule that tyrants of genius are succeeded by scoundrels.
• My passionate interest in social justice and social responsibility has always stood in curious contrast to a marked lack of desire for direct association with men and women. I am a horse for single harness, not cut out for tandem or team work. I have never belonged wholeheartedly to country or state, to my circle of friends, or even to my own family.
• Everybody is a genius.

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Albert Einstein

By: History.com Editors

Updated: May 16, 2019 | Original: October 27, 2009

The German-born physicist Albert Einstein developed the first of his groundbreaking theories while working as a clerk in the Swiss patent office in Bern. After making his name with four scientific articles published in 1905, he went on to win worldwide fame for his general theory of relativity and a Nobel Prize in 1921 for his explanation of the phenomenon known as the photoelectric effect. An outspoken pacifist who was publicly identified with the Zionist movement, Einstein emigrated from Germany to the United States when the Nazis took power before World War II. He lived and worked in Princeton, New Jersey, for the remainder of his life.

Einstein’s Early Life (1879-1904)

Born on March 14, 1879, in the southern German city of Ulm, Albert Einstein grew up in a middle-class Jewish family in Munich. As a child, Einstein became fascinated by music (he played the violin), mathematics and science. He dropped out of school in 1894 and moved to Switzerland, where he resumed his schooling and later gained admission to the Swiss Federal Polytechnic Institute in Zurich. In 1896, he renounced his German citizenship, and remained officially stateless before becoming a Swiss citizen in 1901.

Did you know? Almost immediately after Albert Einstein learned of the atomic bomb's use in Japan, he became an advocate for nuclear disarmament. He formed the Emergency Committee of Atomic Scientists and backed Manhattan Project scientist J. Robert Oppenheimer in his opposition to the hydrogen bomb.

While at Zurich Polytechnic, Einstein fell in love with his fellow student Mileva Maric, but his parents opposed the match and he lacked the money to marry. The couple had an illegitimate daughter, Lieserl, born in early 1902, of whom little is known. After finding a position as a clerk at the Swiss patent office in Bern, Einstein married Maric in 1903; they would have two more children, Hans Albert (born 1904) and Eduard (born 1910).

Einstein’s Miracle Year (1905)

While working at the patent office, Einstein did some of the most creative work of his life, producing no fewer than four groundbreaking articles in 1905 alone. In the first paper, he applied the quantum theory (developed by German physicist Max Planck) to light in order to explain the phenomenon known as the photoelectric effect, by which a material will emit electrically charged particles when hit by light. The second article contained Einstein’s experimental proof of the existence of atoms, which he got by analyzing the phenomenon of Brownian motion, in which tiny particles were suspended in water.

In the third and most famous article, titled “On the Electrodynamics of Moving Bodies,” Einstein confronted the apparent contradiction between two principal theories of physics: Isaac Newton’s concepts of absolute space and time and James Clerk Maxwell’s idea that the speed of light was a constant. To do this, Einstein introduced his special theory of relativity, which held that the laws of physics are the same even for objects moving in different inertial frames (i.e. at constant speeds relative to each other), and that the speed of light is a constant in all inertial frames. A fourth paper concerned the fundamental relationship between mass and energy, concepts viewed previously as completely separate. Einstein’s famous equation E = mc2 (where “c” was the constant speed of light) expressed this relationship.

From Zurich to Berlin (1906-1932)

Einstein continued working at the patent office until 1909, when he finally found a full-time academic post at the University of Zurich. In 1913, he arrived at the University of Berlin, where he was made director of the Kaiser Wilhelm Institute for Physics. The move coincided with the beginning of Einstein’s romantic relationship with a cousin of his, Elsa Lowenthal, whom he would eventually marry after divorcing Mileva. In 1915, Einstein published the general theory of relativity, which he considered his masterwork. This theory found that gravity, as well as motion, can affect time and space. According to Einstein’s equivalence principle–which held that gravity’s pull in one direction is equivalent to an acceleration of speed in the opposite direction–if light is bent by acceleration, it must also be bent by gravity. In 1919, two expeditions sent to perform experiments during a solar eclipse found that light rays from distant stars were deflected or bent by the gravity of the sun in just the way Einstein had predicted.

The general theory of relativity was the first major theory of gravity since Newton’s, more than 250 years before, and the results made a tremendous splash worldwide, with the London Times proclaiming a “Revolution in Science” and a “New Theory of the Universe.” Einstein began touring the world, speaking in front of crowds of thousands in the United States, Britain, France and Japan. In 1921, he won the Nobel Prize for his work on the photoelectric effect, as his work on relativity remained controversial at the time. Einstein soon began building on his theories to form a new science of cosmology, which held that the universe was dynamic instead of static, and was capable of expanding and contracting.

Einstein Moves to the United States (1933-39)

A longtime pacifist and a Jew, Einstein became the target of hostility in Weimar Germany, where many citizens were suffering plummeting economic fortunes in the aftermath of defeat in the Great War. In December 1932, a month before Adolf Hitler became chancellor of Germany, Einstein made the decision to emigrate to the United States, where he took a position at the newly founded Institute for Advanced Study in Princeton, New Jersey . He would never again enter the country of his birth.

By the time Einstein’s wife Elsa died in 1936, he had been involved for more than a decade with his efforts to find a unified field theory, which would incorporate all the laws of the universe, and those of physics, into a single framework. In the process, Einstein became increasingly isolated from many of his colleagues, who were focused mainly on the quantum theory and its implications, rather than on relativity.

Einstein’s Later Life (1939-1955)

In the late 1930s, Einstein’s theories, including his equation E=mc2, helped form the basis of the development of the atomic bomb. In 1939, at the urging of the Hungarian physicist Leo Szilard, Einstein wrote to President Franklin D. Roosevelt advising him to approve funding for the development of uranium before Germany could gain the upper hand. Einstein, who became a U.S. citizen in 1940 but retained his Swiss citizenship, was never asked to participate in the resulting Manhattan Project , as the U.S. government suspected his socialist and pacifist views. In 1952, Einstein declined an offer extended by David Ben-Gurion, Israel’s premier, to become president of Israel .

Throughout the last years of his life, Einstein continued his quest for a unified field theory. Though he published an article on the theory in Scientific American in 1950, it remained unfinished when he died, of an aortic aneurysm, five years later. In the decades following his death, Einstein’s reputation and stature in the world of physics only grew, as physicists began to unravel the mystery of the so-called “strong force” (the missing piece of his unified field theory) and space satellites further verified the principles of his cosmology.

HISTORY Vault: Secrets of Einstein's Brain

Originally stolen by the doctor trusted to perform his autopsy, scientists over the decades have examined the brain of Albert Einstein to try and determine what made this seemingly normal man tick.

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Biography Online

Albert Einstein Biography

Einstein is also well known as an original free-thinker, speaking on a range of humanitarian and global issues. After contributing to the theoretical development of nuclear physics and encouraging F.D. Roosevelt to start the Manhattan Project, he later spoke out against the use of nuclear weapons.

Born in Germany to Jewish parents, Einstein settled in Switzerland and then, after Hitler’s rise to power, the United States. Einstein was a truly global man and one of the undisputed genius’ of the Twentieth Century.

Early life Albert Einstein

Einstein was born 14 March 1879, in Ulm the German Empire. His parents were working-class (salesman/engineer) and non-observant Jews. Aged 15, the family moved to Milan, Italy, where his father hoped Albert would become a mechanical engineer. However, despite Einstein’s intellect and thirst for knowledge, his early academic reports suggested anything but a glittering career in academia. His teachers found him dim and slow to learn. Part of the problem was that Albert expressed no interest in learning languages and the learning by rote that was popular at the time.

“School failed me, and I failed the school. It bored me. The teachers behaved like Feldwebel (sergeants). I wanted to learn what I wanted to know, but they wanted me to learn for the exam.” Einstein and the Poet (1983)

At the age of 12, Einstein picked up a book on geometry and read it cover to cover. – He would later refer to it as his ‘holy booklet’. He became fascinated by maths and taught himself – becoming acquainted with the great scientific discoveries of the age.

Albert Einstein with wife Elsa

Despite Albert’s independent learning, he languished at school. Eventually, he was asked to leave by the authorities because his indifference was setting a bad example to other students.

He applied for admission to the Federal Institute of Technology in Zurich. His first attempt was a failure because he failed exams in botany, zoology and languages. However, he passed the next year and in 1900 became a Swiss citizen.

At college, he met a fellow student Mileva Maric, and after a long friendship, they married in 1903; they had two sons before divorcing several years later.

In 1896 Einstein renounced his German citizenship to avoid military conscription. For five years he was stateless, before successfully applying for Swiss citizenship in 1901. After graduating from Zurich college, he attempted to gain a teaching post but none was forthcoming; instead, he gained a job in the Swiss Patent Office.

While working at the Patent Office, Einstein continued his own scientific discoveries and began radical experiments to consider the nature of light and space.

Einstein in 1921

He published his first scientific paper in 1900, and by 1905 had completed his PhD entitled “ A New Determination of Molecular Dimensions . In addition to working on his PhD, Einstein also worked feverishly on other papers. In 1905, he published four pivotal scientific works, which would revolutionise modern physics. 1905 would later be referred to as his ‘ annus mirabilis .’

Einstein’s work started to gain recognition, and he was given a post at the University of Zurich (1909) and, in 1911, was offered the post of full-professor at the Charles-Ferdinand University in Prague (which was then part of Austria-Hungary Empire). He took Austrian-Hungary citizenship to accept the job. In 1914, he returned to Germany and was appointed a director of the Kaiser Wilhelm Institute for Physics. (1914–1932)

Albert Einstein’s Scientific Contributions

Quantum Theory

Einstein suggested that light doesn’t just travel as waves but as electric currents. This photoelectric effect could force metals to release a tiny stream of particles known as ‘quanta’. From this Quantum Theory, other inventors were able to develop devices such as television and movies. He was awarded the Nobel Prize in Physics in 1921.

Special Theory of Relativity

This theory was written in a simple style with no footnotes or academic references. The core of his theory of relativity is that:

“Movement can only be detected and measured as relative movement; the change of position of one body in respect to another.”

Thus there is no fixed absolute standard of comparison for judging the motion of the earth or plants. It was revolutionary because previously people had thought time and distance are absolutes. But, Einstein proved this not to be true.

He also said that if electrons travelled at close to the speed of light, their weight would increase.

This lead to Einstein’s famous equation:

Where E = energy m = mass and c = speed of light.

General Theory of Relativity 1916

Working from a basis of special relativity. Einstein sought to express all physical laws using equations based on mathematical equations.

He devoted the last period of his life trying to formulate a final unified field theory which included a rational explanation for electromagnetism. However, he was to be frustrated in searching for this final breakthrough theory.

Solar eclipse of 1919

In 1911, Einstein predicted the sun’s gravity would bend the light of another star. He based this on his new general theory of relativity. On 29 May 1919, during a solar eclipse, British astronomer and physicist Sir Arthur Eddington was able to confirm Einstein’s prediction. The news was published in newspapers around the world, and it made Einstein internationally known as a leading physicist. It was also symbolic of international co-operation between British and German scientists after the horrors of the First World War.

In the 1920s, Einstein travelled around the world – including the UK, US, Japan, Palestine and other countries. Einstein gave lectures to packed audiences and became an internationally recognised figure for his work on physics, but also his wider observations on world affairs.

Bohr-Einstein debates

During the 1920s, other scientists started developing the work of Einstein and coming to different conclusions on Quantum Physics. In 1925 and 1926, Einstein took part in debates with Max Born about the nature of relativity and quantum physics. Although the two disagreed on physics, they shared a mutual admiration.

As a German Jew, Einstein was threatened by the rise of the Nazi party. In 1933, when the Nazi’s seized power, they confiscated Einstein’s property, and later started burning his books. Einstein, then in England, took an offer to go to Princeton University in the US. He later wrote that he never had strong opinions about race and nationality but saw himself as a citizen of the world.

“I do not believe in race as such. Race is a fraud. All modern people are the conglomeration of so many ethnic mixtures that no pure race remains.”

Once in the US, Einstein dedicated himself to a strict discipline of academic study. He would spend no time on maintaining his dress and image. He considered these things ‘inessential’ and meant less time for his research. Einstein was notoriously absent-minded. In his youth, he once left his suitcase at a friends house. His friend’s parents told Einstein’s parents: “ That young man will never amount to anything, because he can’t remember anything.”

Although a bit of a loner, and happy in his own company, he had a good sense of humour. On January 3, 1943, Einstein received a letter from a girl who was having difficulties with mathematics in her studies. Einstein consoled her when he wrote in reply to her letter

“Do not worry about your difficulties in mathematics. I can assure you that mine are still greater.”

Einstein professed belief in a God “Who reveals himself in the harmony of all being”. But, he followed no established religion. His view of God sought to establish a harmony between science and religion.

“Science without religion is lame, religion without science is blind.”

– Einstein, Science and Religion (1941)

Politics of Einstein

Einstein described himself as a Zionist Socialist. He did support the state of Israel but became concerned about the narrow nationalism of the new state. In 1952, he was offered the position as President of Israel, but he declined saying he had:

“neither the natural ability nor the experience to deal with human beings.” … “I am deeply moved by the offer from our State of Israel, and at once saddened and ashamed that I cannot accept it.”

Einstein receiving US citizenship.

Albert Einstein was involved in many civil rights movements such as the American campaign to end lynching. He joined the National Association for the Advancement of Colored People (NAACP) and  considered racism, America’s worst disease. But he also spoke highly of the meritocracy in American society and the value of being able to speak freely.

On the outbreak of war in 1939, Einstein wrote to President Roosevelt about the prospect of Germany developing an atomic bomb. He warned Roosevelt that the Germans were working on a bomb with a devastating potential. Roosevelt headed his advice and started the Manhattan project to develop the US atom bomb. But, after the war ended, Einstein reverted to his pacifist views. Einstein said after the war.

“Had I known that the Germans would not succeed in producing an atomic bomb, I would not have lifted a finger.” (Newsweek, 10 March 1947)

In the post-war McCarthyite era, Einstein was scrutinised closely for potential Communist links. He wrote an article in favour of socialism, “Why Socialism” (1949) He criticised Capitalism and suggested a democratic socialist alternative. He was also a strong critic of the arms race. Einstein remarked:

“I do not know how the third World War will be fought, but I can tell you what they will use in the Fourth—rocks!”

Rabindranath Tagore and Einstein

Einstein was feted as a scientist, but he was a polymath with interests in many fields. In particular, he loved music. He wrote that if he had not been a scientist, he would have been a musician. Einstein played the violin to a high standard.

“I often think in music. I live my daydreams in music. I see my life in terms of music… I get most joy in life out of music.”

Einstein died in 1955, at his request his brain and vital organs were removed for scientific study.

Citation: Pettinger, Tejvan . “ Biography of Albert Einstein ”, Oxford, www.biographyonline.net 23 Feb. 2008. Updated 2nd March 2017.

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• January 11, 2019 3:00 PM

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• January 10, 2019 4:11 PM

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• December 23, 2018 8:06 PM

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• November 15, 2018 7:03 PM
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• Albert Einstein - Facts

Albert Einstein

Photo from the Nobel Foundation archive.

Albert Einstein The Nobel Prize in Physics 1921

Born: 14 March 1879, Ulm, Germany

Died: 18 April 1955, Princeton, NJ, USA

Affiliation at the time of the award: Kaiser-Wilhelm-Institut (now Max-Planck-Institut) für Physik, Berlin, Germany

Prize motivation: “for his services to Theoretical Physics, and especially for his discovery of the law of the photoelectric effect”

Albert Einstein received his Nobel Prize one year later, in 1922.

Prize share: 1/1

Albert Einstein grew up in Munich, where his father founded an electrical engineering company. After studying at the ETH university in Zurich, Einstein worked at the patent office in Bern, during which time he produced several pioneering works in the field of physics. He was later employed at universities in Bern, Zurich, and Prague, and from 1914, in Berlin. After the Nazis seized power in Germany, Einstein immigrated to the US, where he worked at the Institute for Advanced Study in Princeton, New Jersey. Einstein married twice and had three children by his first marriage.

If metal electrodes are exposed to light, electrical sparks between them occur more readily. For this photoelectric effect to occur, the light waves must be above a certain frequency, however. According to physics theory, the light's intensity should be critical. In one of several epoch-making studies beginning in 1905, Albert Einstein explained that light consists of quanta—packets with fixed energies corresponding to certain frequencies. One such light quantum, a photon, must have a certain minimum frequency before it can liberate an electron.

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Albert Einstein: Biography, facts and impact on science

A brief biography of Albert Einstein (March 14, 1879 - April 18, 1955), the scientist whose theories changed the way we think about the universe.

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How einstein changed physics.

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Additional resources.

Albert Einstein was a German-American physicist and probably the most well-known scientist of the 20th century. He is famous for his theory of relativity , a pillar of modern physics that describes the dynamics of light and extremely massive entities, as well as his work in quantum mechanics , which focuses on the subatomic realm. 

Albert Einstein's birthday and education

Einstein was born in Ulm, in the German state of Württemberg, on March 14, 1879, according to a biography from the Nobel Prize organization . His family moved to Munich six weeks later, and in 1885, when he was 6 years old, he began attending Petersschule, a Catholic elementary school.

Contrary to popular belief, Einstein was a good student. "Yesterday Albert received his grades, he was again number one, and his report card was brilliant," his mother once wrote to her sister, according to a German website dedicated to Einstein's legacy. But when he later switched to the Luitpold grammar school, young Einstein chafed under the school's authoritarian attitude, and his teacher once said of him, "never will he get anywhere."

In 1896, at age 17, Einstein entered the Swiss Federal Polytechnic School in Zurich to be trained as a teacher in physics and mathematics. A few years later, he gained his diploma and acquired Swiss citizenship but was unable to find a teaching post. So he accepted a position as a technical assistant in the Swiss patent office. 

Related: 10 discoveries that prove Einstein was right about the universe — and 1 that proves him wrong

Einstein married Mileva Maric, his longtime love and former student, in 1903. A year prior, they had a child out of wedlock, who was discovered by scholars only in the 1980s, when private letters revealed her existence. The daughter, called Lieserl in the letters, may have been mentally challenged and either died young or was adopted when she was a year old. Einstein had two other children with Maric, Hans Albert and Eduard, born in 1904 and 1910, respectively.

Einstein divorced Maric in 1919 and soon married his cousin Elsa Löwenthal, with whom he had been in a relationship since 1912.

Einstein obtained his doctorate in physics in 1905 — a year that's often known as his annus mirabilis ("year of miracles" in Latin), according to the Library of Congress . That year, he published four groundbreaking papers of significant importance in physics.

The first incorporated the idea that light could come in discrete particles called photons. This theory describes the photoelectric effect , the concept that underpins modern solar power. The second explained Brownian motion, or the random motion of particles or molecules. Einstein looked at the case of a dust mote moving randomly on the surface of water and suggested that water is made up of tiny, vibrating molecules that kick the dust back and forth. 

The final two papers outlined his theory of special relativity, which showed how observers moving at different speeds would agree about the speed of light, which was a constant. These papers also introduced the equation E = mc^2, showing the equivalence between mass and energy. That finding is perhaps the most widely known aspect of Einstein's work. (In this infamous equation, E stands for energy, m represents mass and c is the constant speed of light).

In 1915, Einstein published four papers outlining his theory of general relativity, which updated Isaac Newton's laws of gravity by explaining that the force of gravity arose because massive objects warp the fabric of space-time. The theory was validated in 1919, when British astronomer Arthur Eddington observed stars at the edge of the sun during a solar eclipse and was able to show that their light was bent by the sun's gravitational well, causing shifts in their perceived positions.

Related: 8 Ways you can see Einstein's theory of relativity in real life

In 1921, he won the Nobel Prize in physics for his work on the photoelectric effect, though the committee members also mentioned his "services to Theoretical Physics" when presenting their award. The decision to give Einstein the award was controversial because the brilliant physicist was a Jew and a pacifist. Anti-Semitism was on the rise and relativity was not yet seen as a proven theory, according to an article from The Guardian .

Einstein was a professor at the University of Berlin for a time but fled Germany with Löwenthal in 1933, during the rise of Adolf Hitler. He renounced his German citizenship and moved to the United States to become a professor of theoretical physics at Princeton, becoming a U.S. citizen in 1940.

During this era, other researchers were creating a revolution by reformulating the rules of the smallest known entities in existence. The laws of quantum mechanics had been worked out by a group led by the Danish physicist Niels Bohr , and Einstein was intimately involved with their efforts.

Bohr and Einstein famously clashed over quantum mechanics. Bohr and his cohorts proposed that quantum particles behaved according to probabilistic laws, which Einstein found unacceptable, quipping that " God does not play dice with the universe ." Bohr's views eventually came to dominate much of contemporary thinking about quantum mechanics.

Einstein's later years and death

After he retired in 1945, Einstein spent most of his later years trying to unify gravity with electromagnetism in what's known as a unified field theory . Einstein died of a burst blood vessel near his heart on April 18, 1955, never unifying these forces.

Einstein's body was cremated and his ashes were spread in an undisclosed location, according to the American Museum of Natural History . But a doctor performed an unauthorized craniotomy before this and removed and saved Einstein's brain. 

The brain has been the subject of many tests over the decades, which suggested that it had extra folding in the gray matter, the site of conscious thinking. In particular, there were more folds in the frontal lobes, which have been tied to abstract thought and planning. However, drawing any conclusions about intelligence based on a single specimen is problematic. 

Related: Where is Einstein's brain?

In addition to his incredible legacy regarding relativity and quantum mechanics, Einstein conducted lesser-known research into a refrigeration method that required no motors, moving parts or coolant. He was also a tireless anti-war advocate, helping found the Bulletin of the Atomic Scientists , an organization dedicated to warning the public about the dangers of nuclear weapons . 

Einstein's theories concerning relativity have so far held up spectacularly as a predictive models. Astronomers have found that, as the legendary physicist anticipated, the light of distant objects is lensed by massive, closer entities, a phenomenon known as gravitational lensing, which has helped our understanding of the universe's evolution. The James Webb Space Telescope , launched in Dec. 2021, has utilized gravitational lensing on numerous occasions to detect light emitted near the dawn of time , dating to just a few hundred million years after the Big Bang.

In 2016, the Advanced Laser Interferometer Gravitational-Wave Observatory also announced the first-ever direct detection of gravitational waves , created when massive neutron stars and black holes merge and generate ripples in the fabric of space-time. Further research published in 2023 found that the entire universe may be rippling with a faint "gravitational wave background," emitted by ancient, colliding black holes.

Find answers to frequently asked questions about Albert Einstein on the Nobel Prize website. Flip through digitized versions of Einstein's published and unpublished manuscripts at Einstein Archives Online. Learn about The Einstein Memorial at the National Academy of Sciences building in Washington, D.C. 

This article was last updated on March 11, 2024 by Live Science editor Brandon Specktor to include new information about how Einstein's theories have been validated by modern experiments.

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Adam Mann is a freelance journalist with over a decade of experience, specializing in astronomy and physics stories. He has a bachelor's degree in astrophysics from UC Berkeley. His work has appeared in the New Yorker, New York Times, National Geographic, Wall Street Journal, Wired, Nature, Science, and many other places. He lives in Oakland, California, where he enjoys riding his bike. 

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Biography: Albert Einstein

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Legendary scientist Albert Einstein (1879 - 1955) first gained worldwide prominence in 1919 after British astronomers verified predictions of Einstein's general theory of relativity through measurements taken during a total eclipse. Einstein's theories expanded upon universal laws formulated by physicist Isaac Newton in the late seventeenth century.

Before E=MC2

Einstein was born in Germany in 1879. Growing up, he enjoyed classical music and played the violin. One story Einstein liked to tell about his childhood was when he came across a magnetic compass. The needle's invariable northward swing, guided by an invisible force, profoundly impressed him as a child. The compass convinced him that there had to be "something behind things, something deeply hidden."

Even as a small boy Einstein was self-sufficient and thoughtful. According to one account, he was a slow talker, often pausing to consider what he would say next. His sister would recount the concentration and perseverance with which he would build houses of cards.

Einstein's first job was that of patent clerk. In 1933, he joined the staff of the newly created Institute for Advanced Study in Princeton, New Jersey. He accepted this position for life, and lived there until his death. Einstein is probably familiar to most people for his mathematical equation about the nature of energy, E = MC2.

E = MC2, Light and Heat

The formula E=MC2 is probably the most famous calculation from Einstein's special theory of relativity . The formula basically states that energy (E) equals mass (m) times the speed of light (c) squared (2). In essence, it means mass is just one form of energy. Since the speed of light squared is an enormous number, a small amount of mass can be converted to a phenomenal amount of energy. Or if there's a lot of energy available, some energy can be converted to mass and a new particle can be created. Nuclear reactors, for instance, work because nuclear reactions convert small amounts of mass into large amounts of energy.

Einstein wrote a paper based on the new understanding of the structure of light. He argued that light can act as though it consists of discrete, independent particles of energy similar to particles of a gas. A few years before, Max Planck's work had contained the first suggestion of discrete particles in energy. Einstein went far beyond this though and his revolutionary proposal seemed to contradict the universally accepted theory that light consists of smoothly oscillating electromagnetic waves. Einstein showed that light quanta, as he called the particles of energy, could help to explain phenomena being studied by experimental physicists. For example, he explained how light ejects electrons from metals.

While there was a well-known kinetic energy theory that explained heat as an effect of the ceaseless motion of atoms, it was Einstein who proposed a way to put the theory to a new and crucial experimental test. If tiny but visible particles were suspended in a liquid, he argued, the irregular bombardment by the liquid's invisible atoms should cause the suspended particles to move in a random jittering pattern. This should be observable through a microscope. If the predicted motion is not seen, the whole kinetic theory would be in grave danger. But such a random dance of microscopic particles had long since been observed. With the motion demonstrated in detail, Einstein had reinforced the kinetic theory and created a powerful new tool for studying the movement of atoms.

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• The Life and Work of Albert Einstein
• Kinetic Molecular Theory of Gases
• Einstein's Theory of Relativity
• What Is a Photon in Physics?
• Introduction to the Major Laws of Physics
• Fundamental Physical Constants
• A Brief History of Atomic Theory
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Albert Einstein (1879-1955)

This is Steve Ember. And this is Sarah Long with the VOA Special English program, EXPLORATIONS .

Today we tell about a scientist who changed the way we understand the universe, Albert Einstein.

In the year 1905, Albert Einstein published some important papers in a German scientific magazine. They included one of the most important scientific documents in history. It was filled with mathematics. It explained what came to be called his "Special Theory of Relativity." Ten years later he expanded it to a "General Theory of Relativity."

Albert Einstein's theories of relativity are about the basic ideas we use to describe natural happenings. They are about time, space, mass, movement, and gravity.

Albert Einstein was born in Ulm, Germany, in 1879. His father owned a factory that made electrical devices. His mother enjoyed music and books. His parents were Jewish but they did not observe many of the religion's rules.

Albert was a quiet child who spent much of his time alone. He was slow to talk and had difficulty learning to read.

When Albert was five years old, his father gave him a compass. The child was filled with wonder when he discovered that the compass needle always pointed in the same direction -- to the north. He asked his father and his uncle what caused the needle to move.

Their answers about magnetism and gravity were difficult for the boy to understand. Yet he spent a lot of time thinking about them. He said later that he felt something hidden had to be behind things.

Albert did not like school. The German schools of that time were not pleasant. Students could not ask questions.  Albert said he felt as if he were in prison.

One story says Albert told his Uncle Jacob how much he hated school, especially mathematics. His uncle told him to solve mathematical problems by pretending to be a policeman. "You are looking for someone," he said, "but you do not know who. Call him X. Find him by using the mathematical tools of algebra and geometry."

Albert learned to love mathematics. He was studying the complex mathematics of calculus when all his friends were still studying simple mathematics. Instead of playing with friends he thought about things such as: "What would happen if people could travel at the speed of light?"

Albert decided that he wanted to teach mathematics and physics. He attended the Federal Polytechnic Institute in Zurich, Switzerland. He graduated with honors, but could not get a teaching job. So he began working for the Swiss government as an inspector of patents for new inventions. The job was not demanding. He had a lot of time to think about some of his scientific theories.

From the time he was a boy, Albert Einstein had performed what he called "thought experiments" to test his ideas. He used his mind as a laboratory. By 1905, he had formed his ideas into theories that he published.

In one paper he said that light travels both in waves and in particles, called photons. This idea is an important part of what is called the quantum theory.

Another paper was about the motion of small particles suspended in a liquid or gas. It confirmed the atomic theory of matter.

The most important of Albert Einstein's theories published that year became known as his "Special Theory of Relativity." He said the speed of light is always the same -- almost three hundred thousand kilometers a second. Where the light is coming from or who is measuring it does not change the speed. However, he said, time can change. And mass can change. And length can change. They depend on where a person is in relation to an object or an event.

Imagine two space vehicles with a scientist travelling in each one. One spaceship is red. One is blue. Except for color, both spaceships are exactly alike. They pass one another far out in space.

Neither scientist feels that his ship is moving. To each, it seems that the other ship is moving, not his. As they pass at high speed, the scientist in each ship measures how long it takes a beam of light to travel from the floor to the top of his spaceship, hit a mirror and return to the floor. Each spaceship has a window that lets each scientist see the experiment of the other.

They begin their experiments at exactly the same moment. The scientist in the blue ship sees his beam of light go straight up and come straight down. But he sees that the light beam in the red ship does not do this. The red ship is moving so fast that the beam does not appear to go straight up. It forms a path up and down that looks like an upside down "V".

The scientist in the red ship would see exactly the same thing as he watched the experiment by the other scientist. He could say that time passed more slowly in the other ship. Each scientist would be correct, because the passing of time is linked to the position of the observer.

Each scientist also would see that the other spaceship was shorter than his own. The higher the speeds the spaceships were travelling, the shorter the other ship would appear. And although the other ship would seem shorter, its mass would increase. It would seem to get heavier.

The ideas were difficult to accept. Yet other scientists did experiments to prove that Einstein's theory was correct.

Ten years after his paper on the special theory of relativity, Albert Einstein finished work on another theory. It described what he called his "General Theory of Relativity." It expanded his special theory to include the motion of objects that are gaining speed. This theory offered new ideas about gravity and the close relationship between matter and energy. It built on the ideas about mass he had expressed in 1905.

Einstein said that an object loses mass when it gives off light, which is a kind of energy. He believed that matter and energy were different forms of the same thing. That was the basis of his famous mathematical statement E equals m-c squared (energy equals mass times the speed of light squared). This statement or formula explained that a great amount of energy could come from a small piece of matter. It explained how the sun could give off heat and light for millions of years. This formula also led to the discovery of atomic energy.

In his general theory of relativity, Einstein said that gravity, like time, is not always the same. Gravity changes as observers speed up or slow down. He also said that gravity from very large objects, such as stars, could turn the path of light waves that passed nearby. This seemed unbelievable. But in 1919, British scientists confirmed his theory when the sun was completely blocked during a solar eclipse. Albert Einstein immediately became famous around the world.

In 1921, he won the Nobel Prize in Physics. It was given to him, not for his theories of relativity, but for his discovery of the law of the photoelectric effect. This scientific law explained how and why some metals give off electrons after light falls on their surfaces. The discovery led to the development of modern electronics, including radio and television.

Albert Einstein taught in Switzerland and Germany. He left Germany when Adolph Hitler came to power in 1933. He moved to the United States to continue his research. He worked at the Institute for Advanced Study in Princeton, New Jersey. Einstein became a citizen of the United States in 1940.

Einstein was a famous man, but you would not have known that by looking at him. His white hair was long and wild. He wore old clothes. He showed an inner joy when he was playing his violin or talking about his work. Students and friends said he had a way of explaining difficult ideas using images that were easy to understand.

Albert Einstein opposed wars. Yet he wrote to President Franklin Roosevelt in 1939 to advise him that the United States should develop an atomic bomb before Germany did.

Einstein spent the last twenty-five years of his life working on what he called a "unified field theory." He hoped to find a common mathematical statement that could tie together all the different parts of physics. He did not succeed.

Albert Einstein died in 1955. He was seventy-six years old.

This Special English program was written by Marilyn Christiano and produced by Paul Thompson. This is Sarah Long. And this is Steve Ember.

This page is part of Stories About People which is part of Interesting Things for ESL Students .

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Albert Einstein

Introduction.

Scientific Breakthroughs

In 1905 Einstein caused a stir by publishing five major research papers. These papers forever changed the way people thought about the universe. One of these papers contained completely new ideas about the properties of light. Einstein received the Nobel prize for physics in 1921, mainly for the work in this paper.

In another paper, Einstein presented what is now called the special theory of relativity. This theory states that measurements of space and time are relative. That is, they change when taken by people moving at different speeds. This idea was entirely new. The special theory of relativity also changed how scientists thought about energy and matter . (Matter is everything that takes up space.)

Later Years

When the Nazi Party took over Germany in 1933, Einstein left the country. He eventually settled in the United States.

During World War II Einstein urged the United States to build nuclear weapons . He felt that these weapons might be needed to defeat the Nazis. The United States did create the first atomic bomb in 1945. Einstein, however, did not work to develop the bomb. After World War II he tried to prevent any future use of atomic weapons. Einstein died in Princeton, New Jersey, on April 18, 1955.

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“It is an irony of fate that I myself have been the recipient of excessive admiration and reverence from my fellow-beings, through no fault and no merit of my own.”

Albert Einstein, ca. 1930

CHRONOLOGY OF EINSTEIN’S LIFE

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• J. Edgar Hoover's FBI hoped to unmask Einstein as a Soviet spy and maintained almost constant surveillance of Einstein. His FBI file totaled 1,800 pages.
• Einstein adored playing violin and said that if he had not gone into physics, he likely would have become a musician.
• Einstein's brain was removed without permission during his autopsy and was sent to be tested for its perceived secrets.

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• Brownian motion: Einstein’s theory of Brownian motion

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Einstein : his life and universe

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