Hasan Özel Posted April 5, 2018 Share Posted April 5, 2018 The colored lights(led or similar things) irradiate a narrower range according to its own emission spectrum. In that case,whatever the color of light, why does the light appears white in the center of all of them ? Link to comment Share on other sites More sharing options...
Bender Posted April 5, 2018 Share Posted April 5, 2018 Eg a green led produces some light that is detected by red and blue photodetectors. Since the centre is much brighter than the sides, all three colours get saturated and White is recorded. Link to comment Share on other sites More sharing options...
Hasan Özel Posted April 5, 2018 Author Share Posted April 5, 2018 14 minutes ago, Bender said: Eg a green led produces some light that is detected by red and blue photodetectors. Since the centre is much brighter than the sides, all three colours get saturated and White is recorded. Is this valid for the other monochromatic light source like red,blue,purple ect.. ? Link to comment Share on other sites More sharing options...
Bender Posted April 5, 2018 Share Posted April 5, 2018 Yes. For purple and yellow, they are always triggering different photoreceptors, even at lower brightness. Link to comment Share on other sites More sharing options...
John Cuthber Posted April 6, 2018 Share Posted April 6, 2018 (edited) Even if you have a very very narrow band of emission- eg from a laser- it will look white if it's bright enough- because the sensors are not narrow band. Edited April 6, 2018 by John Cuthber Link to comment Share on other sites More sharing options...
swansont Posted April 6, 2018 Share Posted April 6, 2018 A lot of cameras display white when they are saturated. I assume that's what's going on in the pictures. Link to comment Share on other sites More sharing options...
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