2007-02-08 09:50:03 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science
Black light is meant to be ultraviolet.
Most lenses are made of glass
Glass absorbs UV.
So no image.
Th
2007-02-08 09:55:18 · answer #1 · answered by Thermo 6 · 1⤊ 1⤋
It's not possible to project black light because, there is no such thing. Black is the absence of light there for if everything is black then there is no light being projected, also if there is light being projected then it can't be black, if you understand that.
There are 7 main colours of light, these all come from white light , which is what you get if you mix all the light together in one place, but these can be separated by a spectrum, any way the main colours of light are: red, orange, yellow, green, blue, indigo and Violet. Then these can be mixed to get secondary colours of light, and the secondary colours mixed to get, i think its Tertiary colours but that could be wrong. But any way, what I'm trying to get at is that no matter how these colours are mixed you can never get black because this is and absence of light and so if there is no light to project then it can't be projected.
OK so I hope that helps and doesn't confuse you.
2007-02-12 02:39:01 · answer #2 · answered by rachel_spider 3 · 0⤊ 0⤋
Black light, or ultra-violet radiation can be projected. The issue is the need for it. Since we can not see it because our eyes are not able to "see" it, there is little common use for it. Lasers can produce it, certain common lamps produce it, it is used with certain materials the produce light that we can see when illuminated by "black light". This "light" is in a different wave length region of the electromagnetic spectrum, but it can be projected,
2007-02-09 09:20:51 · answer #3 · answered by Anonymous · 0⤊ 0⤋
black is caused by the absence of light. In a manner of speaking, you can project "black" light by standing in front of a flashlight. your shadow casts "black light" or the absence of white light.
This is the law of physics, not God. This has been divinitively proven. And incidentally, talk to anyone who has ANY knowledge of the book of Genesis and they will tell you (if they know christianity at all) the old testement was never written to be taken in context. It is NOT an account of the first days of existance NOR was it EVER meant to be.
2007-02-08 10:44:42 · answer #4 · answered by Anonymous 3 · 0⤊ 1⤋
There are different types of lights. You can see all of them. When you have no light, you can not see anything. The condition where you have no light is called " black ". Black is not a color in scientific terms. It is lack of light.
2007-02-09 15:00:55 · answer #5 · answered by kenneth h 6 · 0⤊ 0⤋
Black light, is all the colours of rainbow mixed.
2007-02-10 06:17:12 · answer #6 · answered by CLIVE C 3 · 0⤊ 0⤋
You can, but to do it properly you'll need lenses made of something like quartz or fluorite. A glass lens will allow some UV through, but probably wont have the range of mechanical movement to let you focus it.
2007-02-08 20:41:44 · answer #7 · answered by Iridflare 7 · 0⤊ 1⤋
Black is the absence of light.
Black was the earth before God created it (Gen 1:2) [Law of first occurrence in the Holy Bible]
God saw the light, that it was good: and God divided the light from the darkness. (Gen 1:4)
Where there is light, darkness flees... as does evil...
2007-02-08 10:10:09 · answer #8 · answered by James N 4 · 1⤊ 4⤋
Electricty board have no demand for this I!d say.
2007-02-08 09:59:47 · answer #9 · answered by Andy 3 · 0⤊ 1⤋