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Albert Einstein

Albert Einstein was a German-born theoretical physicist best known for developing the special and general theories of relativity.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

Albert Einstein was a German-born theoretical physicist best known for developing the special and general theories of relativity. He received the 1921 Nobel Prize in Physics for his explanation of the photoelectric effect and became one of the most influential scientists of the 20th century.

Early life and education

Einstein was born in Ulm, Württemberg, German Empire, on 14 March 1879. He grew up in Germany before studying in Switzerland. He was a German-born Jewish scientist who later became associated with Swiss and American academic life.

Scientific work

Einstein’s 1905 papers introduced special relativity and advanced the modern understanding of space and time. He later completed general relativity in 1915, offering a new theory of gravitation. His mass–energy equivalence formula, E=mc², is among the most widely recognized equations in physics.

Nobel Prize and photoelectric effect

Einstein received the 1921 Nobel Prize in Physics for his explanation of the photoelectric effect. The Nobel Prize was awarded for his services to theoretical physics, especially this discovery, not for relativity.

Later life and legacy

Einstein spent his later years in the United States, including at Princeton, New Jersey, and died there on 18 April 1955. He is widely regarded as one of the most influential physicists in history. His work helped reshape modern physics, including ideas about space, time, gravity, and quantum theory.

Key facts

  • Einstein developed the special theory of relativity in 1905 and the general theory of relativity in 1915.
  • He won the 1921 Nobel Prize in Physics for his explanation of the photoelectric effect, not for relativity.
  • His mass–energy equivalence formula, E=mc², is among the most widely recognized equations in physics.
  • Einstein was born in Ulm, Germany, in 1879 and died in Princeton, New Jersey, in 1955.
  • His work helped reshape modern physics, including ideas about space, time, gravity, and quantum theory.
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Canadian context

Einstein has no direct Canadian identity, but his theories are foundational to physics education, research, and technology in Canada, including university teaching and scientific work in relativity and quantum physics.

Frequently asked questions

Who was Albert Einstein?
Albert Einstein was a German-born theoretical physicist known for relativity, quantum contributions, and the photoelectric effect.
What is Einstein best known for?
He is best known for the theory of relativity and the equation E=mc².
Did Einstein win the Nobel Prize for relativity?
No. He won the 1921 Nobel Prize in Physics for his explanation of the photoelectric effect.
When was Einstein born and when did he die?
He was born on 14 March 1879 and died on 18 April 1955.
Why is Einstein important in physics?
His work transformed understanding of space, time, gravity, and light, and it remains central to modern physics.

References

  1. Nobel Prizehttps://www.nobelprize.org/prizes/physics/1921/einstein/biographical/
    Supports: Birth and death details; biographical overview
  2. Wikipediahttps://en.wikipedia.org/wiki/Albert_Einstein
    Supports: Theory of relativity; quantum theory; E=mc²; Nobel Prize context
  3. Institute for Advanced Studyhttps://www.ias.edu/albert-einstein-brief
    Supports: Early life and childhood background
  4. Encyclopaedia Britannicahttps://www.britannica.com/biography/Albert-Einstein
    Supports: Biography, relativity, Nobel Prize, major scientific significance
  5. Nobel Prizehttps://www.nobelprize.org/prizes/physics/1921/einstein/facts/
    Supports: Award year, prize motivation, birth and death details
  6. Einstein Onlinehttps://einstein-online.info/en/about-einstein-online/about-albert-einstein/
    Supports: Photoelectric effect and relation to quantum theory