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Why cant humans detect infrared light?
They can. While human eyes can not "see" infrared light, humans can detect this light as "heat" on the surface of the skin.
Why is it necessary to detect radiation from space and not just light?
Light is radiation.
What is the wavelenth of black color?
Black is not actually a colour associated with a unique wavelength of light. Black objects absorb nearly all the light at wavelengths our eyes can detect. When we look at something black we are actually seeing 'no light' (or very little compared to the surroundings).White light is the exact opposite; white objects hardly absorb any light. When we look at white objects, our eyes take in light at all wavelengths and we interpret this as the 'colour' white.Visible light wavelength range: 390 to 750 nm (there are 1,000,000 nm in 1 mm)Any light outside this range cannot be seen by humans and could be called 'black'
Why can wavelengths of light be seen by humans?
Our eyes can detect them.
Light demonstrates wave characteristics when it is?
... monitored with a detector designed to detect wave characteristics. When monitored with a detector designed to detect particle characteristics, light demonstrates those too.
What color do you perceive when your eyes detect no light?
Black
Can a black light detect a milk stain?
Yes.
Can black light detect drug use?
No, black lightsd mainly detect body fluids, even if theve been wiped off or cleaned.
Can you add something to glue so you can see it with a black light?
No, there isn't anything that you add to glue so you can see it with a black light. A black light can be used to detect counterfeit currency in the United States.
If earth and a star were diverging at a combined speed greater than that of light would that star not appear as a black hole?
No. We would be unable to detect it but you can detect black holes(by xrays and light emmitted from material they are sucking up). You would be unable to detect it because if the two were moving away at a combined speed greater than that of light then light from the star could never reach the earth.
How do you detect blood on a window frame?
Use a UV light. The blood stain will appear black.
Do rods detect color in eye receptors?
Rods are used to detect variances in light and are perceived as black, grey and white. Cones are used to pick up colors.
Black holes where can you find them?
The nearest know black hole is at a distance of several thousand light-years. There are probably black holes closer by, but they are hard to detect, if they don't happen to be part of a close binary star system.The nearest know black hole is at a distance of several thousand light-years. There are probably black holes closer by, but they are hard to detect, if they don't happen to be part of a close binary star system.The nearest know black hole is at a distance of several thousand light-years. There are probably black holes closer by, but they are hard to detect, if they don't happen to be part of a close binary star system.The nearest know black hole is at a distance of several thousand light-years. There are probably black holes closer by, but they are hard to detect, if they don't happen to be part of a close binary star system.
How can you detect blood on a window frame?
The best way to detect blood is with a very strong black light. Holding the light over a window frame will expose any bodily fluids, but it may not be possible to tell exactly what it is.
In 1860 which group composed half of the seamen in the U.S. Navy?
black
Why light of some fireworks looks white?
light is frequency as our eyes detect the frequency spectrum of colors white is the brightest that we can see. Of course black is just the absence of light
Why dark looks black in color?
Absorbs all different wavelengths of visible white light, therefore no frequencies are reflected - we detect the absence of frequencies as black!
