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seen Nov 22 '12 at 16:14

Nov
18
comment How small can diffraction grating be?
As I read answer in my previous question I know I can use diffraction grating to get specific wavelenght I want. I mean, I can use it as a filter that gives me that exact colour that I want to achieve RIGHT NOW. Is it possible with very small diffraction grating? That's what's most important for me to know.
Nov
17
awarded  Student
Nov
17
asked How small can diffraction grating be?
Nov
10
comment Dispersion & Absorption in Optics
Thank you very much, and sorry. Will post one question only next time. My bad.
Nov
9
comment Dispersion & Absorption in Optics
First of all, thank you for nice, fast answer. But I've got 2 more questions. 1. Sorry, I was unclear. I want to let light through prism, then use lens to focus it. Will you answer still be the same? 2. Is there any filter that has will change it's "filter ratio" (or whatever it's called). I mean, is there a way to control filter, to make it filter out wavelenghts I want in this very moment? Like, infra-red, but then I want to change to green (was it like 550 nm?), and then to UV. Is this possible? Ofc better yet if it could be controlled via software.
Nov
9
awarded  Scholar
Nov
9
accepted Dispersion & Absorption in Optics
Nov
9
asked Dispersion & Absorption in Optics