In E=mc², what does c stand for?
AnswerThe speed of light
c is the speed of light in a vacuum, about 300,000 km per second.
Science · Facts & stats
Einstein facts & stats
7 fact-checked facts about Albert Einstein's life and physics, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
Einstein is most famous for which theory?
AnswerRelativity
His special and general theories of relativity reshaped physics.
Going deeper
In what year did Einstein publish special relativity?
Answer1905
1905 was his 'miracle year', including the special relativity paper.
Einstein worked as a patent examiner in which city?
AnswerBern
He worked at the Swiss patent office in Bern from 1902.
After emigrating to the US, Einstein worked at which institution?
AnswerInstitute for Advanced Study in Princeton
He joined the Institute for Advanced Study in Princeton, New Jersey, in 1933.
Expert level
What is the atomic number of einsteinium, the element named after Einstein?
Answer99
Einsteinium, element 99, was first found in debris from a 1952 hydrogen bomb test.
Einstein's 1905 paper on Brownian motion gave strong evidence for what?
AnswerThe existence of atoms and molecules
It explained the jiggling of particles in fluid as collisions with molecules.
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