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What is the decay rate in s

  1. Dec 4, 2012 #1
    Hi all,

    I'm studying Laplace transform right now. And I am trying to understand the s variable in the s-plane. I found online that s = σ + jω where ω is the frequency and σ is the decay rate. Frequency is pretty easy to understand but I can't seem to find anywhere that explains what is the decay rate. Can anybody help please?

  2. jcsd
  3. Dec 5, 2012 #2

    Simon Bridge

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    Welcome to PF;
    Have a look at how the variable s is used ... what happens when you vary that sigma?
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