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E=MC² : how does it work ?

  1. Jan 28, 2012 #1
    I understand that energy depends on mass but why multiply it by C² and not some other constant ?
    Several subquestions pops up from the previous one : how Einstein ended up with this equation ? Why a fundamental limit of nature as C should be squared (what does a squared limit mean) ? Is it related to some deep truth about the nature of matter and energy ? Is it a "model dependent" mathematical trick ? What is a constant of nature ?
     
  2. jcsd
  3. Jan 28, 2012 #2

    Matterwave

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    We get a question like this every other day (or more), you can just do a search and I'm sure you'll see a lot of threads with the answers in them.
     
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