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B Energy transfer and waves

  1. Sep 11, 2017 #1
    How can we show mathematically that a wave transfer energy?
  2. jcsd
  3. Sep 11, 2017 #2


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  4. Sep 11, 2017 #3
  5. Sep 12, 2017 #4


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    Look up "Feynman's sticky beads". Feynman used this (embarassingly simple) argument to show that gravitational waves carry energy. Modifying it for a mechanical wave is simple.
  6. Sep 14, 2017 #5


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    I thought you wanted the math. If you want a simple explanation, never ask for the math behind something.
  7. Sep 14, 2017 #6


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    On the other hand, explanations without math are either more complicated than with math or wrong.
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