1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Wave energy ~ wave height squ. or wave amplitude squ.?

  1. Dec 17, 2008 #1
    Hello,
    I've found different formulas regarding wave energy.

    1) Wave energy is proportional to wave length [tex]\lambda[/tex] times wave height squared

    2) Wave energy is proportional to wave period T times wave amplitude squared

    From what I've read, wave period is equivalent to wave length.
    But wave height does not equal wave amplitude (for a sinusoidal wave: h=2a) so shouldn't it be 4a?

    I think I'm mixing up a few things.
     
  2. jcsd
  3. Dec 17, 2008 #2

    jtbell

    User Avatar

    Staff: Mentor

    In a "proportional to" relationship, numerical constants don't matter. So "proportional to amplitude squared" and "proportional to height squared" are equally valid statements, because amplitude and height are proportional to each other.
     
  4. Dec 18, 2008 #3
    Oh, okay, thank you.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook




Loading...
Similar Threads for Wave energy wave Date
I Refraction of Ocean waves: Wide Headland vs Narrow Mar 29, 2018
I Wave energy and capacitors May 22, 2017
I What would happen in following condition? Mar 29, 2017