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Homework Help: CD question

  1. Jul 5, 2012 #1
    1. The problem statement, all variables and given/known data
    Currently cd players use laser light in the red portion of the spectrum. What changes would be required in the manufactering of cds if blue laser light were to be used?

    2. Relevant equations

    3. The attempt at a solution
    Well I'm pretty sure it has something to do with the wavelengths, but I have no idea what the actual answer is! Help please?
  2. jcsd
  3. Jul 6, 2012 #2


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    Science Advisor
    Homework Helper

    welcome to pf!

    hi addiec206! welcome to pf! :smile:
    yes, it's the wavelength

    now you need to look up how cds work, and how a cd is made :wink:

    tell us what you find :smile:
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