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Einstein's Proof of E=mc²

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Published on Mar 29, 2012

Ever wonder how Einstein proved E=mc²? This is how.

Pi day (3.14) is Albert Einstein's Birthday! To celebrate, we'll explain 4 of his most groundbreaking papers from 1905, when he was just 26 years old.

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Thanks to Nima Doroud and Alex Yale for contributions and to Perimeter Institute for support.

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Top Comments

  • jo shmo

    jo shmo 2 days ago

    energy (in joules) = mass (in grams) multiplied by the (speed of light)^2

    mass = energy

    at the speed of light squared

    · 4

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    in reply to dubssstep (Show the comment)
  • smurfkidharley

    smurfkidharley 3 days ago

    Though the first one is possible, the latter is certainly true.

    · 2

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    in reply to simpant98 (Show the comment)

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  • TehMigzu12

    TehMigzu12 3 hours ago

    i act like i understood something :)

    ·

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  • Rhydian Jenkins

    Rhydian Jenkins 22 hours ago

    Kg you fool!

    ·

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    in reply to jo shmo (Show the comment)
  • 919richie1

    919richie1 1 day ago

    wow i actually caught on...

    ·

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  • amassi2010

    amassi2010 2 days ago

    whasaap guys what is this kid talkin about ..is it something to eat or to drink

    ·

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  • TheMicro Diamond

    TheMicro Diamond 2 days ago

    I've always asked myself this question: Why is c a variable? The speed of light is a constant, but is it because c^2 is a ridiculosly large number? Or is there another reason?

    ·

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  • lawson huet

    lawson huet 2 days ago

    thx so much

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    in reply to dubssstep (Show the comment)
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