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

Homework Help: Question about light intensity and resistance

  1. Mar 22, 2007 #1
    1. The problem statement, all variables and given/known data
    For my physics coursework, I have to design a laboratory experiment using an LDR to investigate how intensity of light emitted from a lamp varies with wavelength. In the procedure I will use diffraction gratings to separate light into wavelengths. The problem I am having is "How a measure of light intensity can be obtained from the LDR" please can anybody show me how to obtain intensity from an LDR.
    thanks


    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Mar 22, 2007 #2

    Gokul43201

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Do you know how a typical LDR works? Do you have the spec sheet for the LDR you are using (something like this) ?
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook