Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Find the speed of light in silica

  1. Mar 8, 2009 #1
    1. The problem statement, all variables and given/known data
    Light of wavelength 559nm in vacuum passes through a piece of silica (index of refraction 1.437). Find the speed of light in silica. Answer in units of m/s

    2. Relevant equations
    Index of Refraction = Speed of Light in Vacuum/Speed of Light in Substance
    [n = c/v]

    3. The attempt at a solution
    Manipulate: [n = c/v] ---> [cn = v]
    Plug in: (5.59 * 10^-7) (1.437) = (8.03 * 10^-7)

    I converted 559nm to (5.59 * 10^-7) meters

    It seems like a simple enough problem, but my answer is incorrect! =(
  2. jcsd
  3. Mar 8, 2009 #2


    User Avatar
    Science Advisor
    Homework Helper

    Hi stickyriceyum! :smile:

    erm :redface: … try using c :wink:
  4. Mar 8, 2009 #3
    I got it =D Thank you!
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook