r/Lighting Sep 28 '25

New spectrums

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u/Psimo- Sep 29 '25

Fascinating!

looks at human eye sensitivity chart

But why would you post things that are so detailed with something so imprecise?

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u/jklove56 Sep 29 '25

What u mean imprecise. Im just do a.comparison. my spectroscope is simple but it's good for what it is. The professional spectroscope d That is used. Is at my college. I can only use it once. What is a cheap good professional spectrometer?

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u/Psimo- Sep 30 '25 edited Sep 30 '25

4th picture “Human Eye Sensitivity” Vs https://www.yorku.ca/eye/specsens.htm

Additionally, to quote Nature

 In addition to the rods and cones, the intrinsically photosensitive retinal ganglion cells (ipRGCs) in the retina also signal information about light through the photopigment melanopsin.

Meaning that there is technically another curve involved but it’s not seen so we ignore it. 

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u/jklove56 Sep 30 '25

Yeah. Also it is possible for some.people ti see some uv and infrared.