Ultra Violet
What colour do you get if you mix ultra violet with infra red?
As in blue and yellow make green. What colour would you get if you mixed ultra violet with – say green?
You would get the average wavelength of light between the two colors. If you look at the EM spectrum (http://www.dnr.sc.gov/ael/personals/pjpb/lecture/spectrum.gif) you can see that when you mix yellow and blue, you would get green because green is between those two wavelengths of light. And it only looks green because 50% of atoms are emitting 450nm(blue) wavelength light, and 50% are emitting 600nm(yellow) light. But since you mixed them together and they are so close together your brain interprets it as green light. For example if you were to have something green and look through some filter that filters out any blue light, you will see yellow because those are the only atoms left (that you can see). Another example is when you heat something up (like an electric stove), the heating element glows red because the atoms in it are shaking so fast that they are giving off the IR (heat) that they are supposed to, but are also some if not most atoms are also just the little bit more energetic to get into the visible spectrum. And if you were to heat it up even more atoms would be shaking fast and faster giving off all different wavelengths of radiation and as you know if you mix all colors together you get white light, so that’s why it starts to glow white hot.
After reading others answers i realize that both the IR and UV would not be able to be averaged out by your brain like the visible colors can be. And so mixing them together would still be invisible to humans. However if you were able to remove the limits of the human eye and/or brain and look at this mixture with some device that sees visible light as well as IR and UV all together:
Assuming you are using the wavelengths of UV and IR that are very close to visible light, the color would be green. Because the UV would be ~350nm and the IR would be ~750nm so assuming 50/50 mixture it would be average of 1100/2 = 550 so that wavelength corresponds to green.
That said makes me wonder if that has anything to do with our sensitivity to green light… interesting question!
Stiff Dylans — Ultraviolet
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LEDwholesalers 395 nM 51 UV Ultraviolet LED flashlight Blacklight 3 AA, 7202UV395 $14.25 This large uv flashlight with 51 uv LEDs allows you to cover a much bigger area without losing the intensity of the UV light. The applications is perfect for inspection applications, security control, rodent contamination, hotel room inspection, and much more. Emits 395 nanometer wavelength 51 UV LED allow to cover a larger area Makes semen stains and other bodily fluids fluoresce! Perfect for out… |
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Men in Black 3 (Two Disc Combo: Blu-ray / DVD + UltraViolet Digital Copy) $28.69 In Men in Black⢠3, Agents J (Will Smith) and K (Tommy Lee Jones) are back… in time. J has seen some inexplicable things in his 15 years with the Men in Black, but nothing, not even aliens, perplexes him as much as his wry, reticent partner. But when K’s life and the fate of the planet are put at stake, Agent J will have to travel back in time to put things right. J discovers that there are… |
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