Portrait of Albert Einstein (1879 to 1955)
Modern | Germany / USA

Albert Einstein

Also known as: Einstein · The Father of Modern Physics · The Genius of the Century

Theoretical Physicist - Nobel Laureate - Humanitarian

SciencePhysicsNobel PrizeMathematicsPhilosophy
Born: 1879
Died: 1955
Era: Modern
Region: Germany / USA
Birthplace: Ulm, Germany
Albert Einstein was a German-born theoretical physicist who developed the theory of relativity, one of the two pillars of modern physics alongside quantum mechanics. His mass–energy equivalence formula E = mc² has been dubbed "the world's most famous equation." He received the 1921 Nobel Prize in Physics for his discovery of the law of the photoelectric effect. After fleeing Nazi Germany in 1933, he settled in the United States, where he spent the rest of his life at the Institute for Advanced Study in Princeton. Einstein's work fundamentally altered humanity's understanding of space, time, gravity, and the cosmos.

Map

Timeline

1879 Event

Born in Ulm

Born on March 14 in Ulm, in the Kingdom of Württemberg in the German Empire.

1905 Discovery

Annus Mirabilis

Published four groundbreaking papers — on the photoelectric effect, Brownian motion, special relativity, and mass–energy equivalence — transforming modern physics.

1915 Discovery

General Theory of Relativity

Published his general theory of relativity, describing gravity as the curvature of spacetime caused by mass and energy.

1919 Event

Eclipse Confirmation

Arthur Eddington's observation of light bending around the sun during a solar eclipse confirmed general relativity, making Einstein a global celebrity overnight.

1921 Event

Nobel Prize in Physics

Awarded the Nobel Prize in Physics for his discovery of the law of the photoelectric effect, a pivotal step in the development of quantum theory.

1933 Event

Fled Nazi Germany

As the Nazi party rose to power, Einstein, who was Jewish, emigrated to the United States and joined the Institute for Advanced Study in Princeton.

1939 Event

Einstein–Szilard Letter

Co-signed a letter to President Franklin D. Roosevelt warning of the possibility of atomic weapons, helping to initiate the Manhattan Project.

1955 Event

Death in Princeton

Died on April 18 in Princeton, New Jersey, aged 76, from an aortic aneurysm. He refused surgery, saying "I want to go when I want."

Family Tree

Parents

Hermann Einstein

Father

1847–1902

Pauline Koch

Mother

1858–1920

Subject & Siblings

Einstein

Self

1879 - 1955

Spouses

Mileva Marić

Wife I

1875–1948

Elsa Löwenthal

Wife II

1876–1936

Children

Hans Albert Einstein

Son

1904–1973

Eduard Einstein

Son

1910–1965

Key Contributions

  1. Atom Theory of Relativity

    Special and general relativity revolutionized the understanding of space, time, and gravity, replacing Newtonian mechanics at cosmological scales.

  2. Zap E = mc²

    The mass–energy equivalence equation demonstrated that mass and energy are interchangeable, underpinning nuclear energy and modern particle physics.

  3. Sun Photoelectric Effect

    His explanation of the photoelectric effect, for which he won the Nobel Prize, laid the foundation for quantum mechanics and the development of solar cells.

  4. Globe Pacifism & Humanitarianism

    A lifelong pacifist and civil rights advocate, Einstein spoke out against nationalism, racism, and nuclear proliferation throughout his life.

Fun Facts

Brain

His Brain Was Stolen

When Einstein died in 1955, pathologist Thomas Harvey removed and kept his brain without permission from his family, leading to decades of scientific study.

Violin

Passionate Violinist

Einstein played the violin throughout his life and said that if he had not been a physicist, he would have been a musician. Mozart was his favorite composer.

Socks

Never Wore Socks

Einstein famously avoided wearing socks, considering them an unnecessary complication. He reportedly wrote about this to his cousin Elsa.

Compass

Sparked by a Compass

Einstein credited his lifelong fascination with physics to a compass his father showed him at age five — he was mystified that an invisible force could move the needle.

Death

Rupture of an abdominal aortic aneurysm

April 18, 1955

Location

Location: Princeton Hospital, Princeton, New Jersey

Burial: Princeton, New Jersey, USA

Key Figures

  • Hans Albert Einstein

    Son who was present at his father's death in Princeton.

Impact

Einstein died as he had lived — on his own terms. His death marked the end of an era in physics, though his theories continue to be tested and confirmed to this day. He remains the most recognized scientist in history and a global symbol of intellectual curiosity and moral courage.

See Also

"Imagination is more important than knowledge."

Interview in The Saturday Evening Post, 1929