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Feb 24, 2016 at 19:21 history closed Carl Witthoft
Sebastian Riese
John Duffield
ACuriousMind
user36790
Needs details or clarity
Feb 24, 2016 at 7:20 answer added John Rennie timeline score: 1
Feb 23, 2016 at 13:50 comment added Peter Diehr Natural materials exhibit negative dispersion only near strong absorption bands, and you thus "see" nothing in the optical range - and the OP was discussing visible light, red through violet. Very recently materials have been designed and fabricated which have negative index of refraction; of course these will give the opposite result, but a comment is not a dissertation, and I did consider mentioning all of this - and would have if I had posted an actual answer.
Feb 23, 2016 at 12:35 review Close votes
Feb 24, 2016 at 19:21
Feb 23, 2016 at 12:19 comment added Carl Witthoft @PeterDiehr that's inaccurate and misleading. There are plenty of negative dispersion materials out there.
Feb 23, 2016 at 11:20 comment added Peter Diehr "Blue bends best" by refraction, such as a prism. If you follow the "marching soldiers" into the mud model you quickly see that shorter steps lead to a sharper bend, while longer steps lead to shallower bends; blue is shorter than red when it comes to wavelengths.
Feb 23, 2016 at 10:08 comment added Faiz Iqbal @lemon and it depends on ?
Feb 23, 2016 at 10:02 comment added lemon It depends. Through a prism, say, red bends the least. But through a diffraction grating it bends the most.
Feb 23, 2016 at 9:57 review First posts
Feb 23, 2016 at 10:26
Feb 23, 2016 at 9:54 history asked Anagha CC BY-SA 3.0