please help me to make a powerpoint about color
2007-03-10 19:02:50 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Physics
glad you added the word "physics" to show this is a science question not a philosophy question.
When physicists first started studying light, they found that in some of their experiments, it acted like a particle, in others it acted like a wave in some kind of medium. They found the "speed" of light was constant, so that the frequency (wave crests per second) and wavelength (distance from one wave crest to the next) are inversely proportional to each other.
Light is a form of electromagnetic radiation that is visible to the naked eye. The human eye can see only a small range of wavelengths of this radiation. The color white is a mixture of light with wavelengths all across this "visible" spectrum. If white light is passed through a prism or otherwise refracted, the different wavelenghts bend different amounts and a rainbow results. Each color is a particular small range of wavelengths in the visible spectrum. Violet is the shortest wavelength, highest frequency, and on the other end, red is the longest wavelength, lowest frequency. The other colors have wavelengths in between.
A related question, more for philosophers or graphic artists, is what is colors in perception? I've never seen brown in a rainbow. There are primary colors that can be mixed to produce any color the eye can perceive. But I don't know much about that.
2007-03-10 19:26:05 · answer #1 · answered by kozzm0 7 · 0⤊ 0⤋
Colour is our brain's interpretation of a particular wavelength of the electromagnetic spectrum when it interacts with our eye.
The electromagnetic spectrum is all electromagnetic waves from very short wavelengths like gamma and x-rays which we cannot see through the visible spectrum to longer wavelengths such as microwaves and radiowaves which we also can't see.
2007-03-10 19:09:38 · answer #2 · answered by gumtrees 3 · 0⤊ 0⤋
Technically in light, it is the separate wavelengths that make up white light.
Here's all you need>>>
http://en.wikipedia.org/wiki/Color
2007-03-10 19:20:19 · answer #3 · answered by Anonymous · 0⤊ 0⤋
oh are you speaking approximately colorings of sunshine? properly i think of green+blue=cyan blue+crimson=magenta crimson+green=..yellow? properly i assume because of the fact yellow is the third one all of them extra up jointly makes white gentle
2016-12-18 19:52:46 · answer #4 · answered by Anonymous · 0⤊ 0⤋