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Visible domain

  1. Apr 10, 2010 #1
    In spectrum of EM radiation domain of visible light isn't strictly limited. In books is usually given from [tex]400-800nm[/tex]. But for visible domain short-wave limit is [tex]\lambda=430nm[/tex], and long-wave limit is [tex]\lambda=690nm[/tex]? Why we say then that the boundaries are [tex]400-800nm[/tex]?
  2. jcsd
  3. Apr 10, 2010 #2
    Yes it differs from book to book...the boundaries are not very strict..i say the visible range is from 350 nm to 750 nm.
  4. Apr 10, 2010 #3


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    If you google "wavelength of light" you will get a slew of results and they will all be slightly different. Lower limit 350 - 400, upper limit 690 - 750.
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