Why placing a blue filter in front of a light source will give blue li

AI Thread Summary
Placing a blue filter in front of a light source results in blue light due to the specific electronic transitions and vibrational modes of the filter material. This phenomenon is not related to the polarization of light. The filter selectively absorbs other wavelengths while allowing blue light to pass through. The discussion emphasizes the material properties of the filter as the primary reason for the color change. Understanding these principles is essential for applications in lighting and optics.
hangover
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It may be a very simple question.
Why placing a blue filter in front of a light source will give blue light?Is this phenonmenon concerned with polarization of light(the vibration of electrons of the filter giving blue light)?
Thanks very much!
 
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No it has for sure nothing to do with polarisation, but I would say (the only reason that makes sense) that it's because of the allowed electronic transitions in the material or the allowed vibrations modes.
 

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