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What affects the intensity of different coloured lights?

  1. Aug 18, 2015 #1
    Okay, so I have completed a practical where I used a light box and then placed different coloured plastics in front of the light and measured the light intensity of each colour. From the results I found that yellow, orange and violet had the highest intensities, with red and green having the lowest intensity, with blue in the middle.

    What made this happen? Does the wavelength of each colour change the intensity? or is it the frequency? or is it another factor?

    If possible could someone please help! :)
     
  2. jcsd
  3. Aug 18, 2015 #2

    Bystander

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    There's just the one light source?
     
  4. Aug 18, 2015 #3
    yes, there was only one light source
     
  5. Aug 18, 2015 #4

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    Have you plotted "intensity" versus frequency/wavelength?
     
  6. Aug 18, 2015 #5

    Yeah that is the main graph that is being used for analysis Untitled.png
     
  7. Aug 18, 2015 #6

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    What do you know about the source? Incandescent filament? CFL? Something else?
     
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