If black color doesnt reflect any light and white is combination of all colors (someone even told me these colors dont theoretically exist) than what is grey color and how it is possible we can see it? If it reflected only half of the spectrum than white+black should create color that is in the middle of a spectrum... can you explain this?
2007-02-02 06:14:14 · 7 answers · asked by eldridan 3 in Science & Mathematics ➔ Physics
Grey is the result of non-complete reflectance. If a surface absorbs all colors like black, but does not absorb the full power of the light you get grey.
Lets look at all of the colors like a computer, if you see an amplitude of 1 for all colors in the spectrum, then you perceive white. If you get 0 for all of the colors then you see black. This leaves the scenario what happens when you see 0.5 of all colors. What happens when all of the spectrum is equally absorbed but not the entire amplitude of the light?
Welcome to grey.
It is simply a perfect distribution of the spectrum varying in amplitude between 0% and 100% reflectance.
2007-02-02 06:18:49 · answer #1 · answered by uahgrad05 3 · 2⤊ 0⤋
You correctly stated that black colour is generated when all visible light is absorbed by an object, and appear white when all light is reflected, then a substance will appear grey if both of these process occurs at the same time. This is because only partially of each colour light is absorbed , whilst the rest is reflected. So part of energy the red, orange, yellow, green, blue, Indigo and Violet light are absorbed, whilst the rest are reflected. Think back to your school day, when you mix white and black paint you get grey, this should explain your findings.
2007-02-02 14:24:19 · answer #2 · answered by The exclamation mark 6 · 0⤊ 0⤋
When talking about light, white is the combination of all wavelengths. Black is the lack of color, and absorbs all light. Combinations of light make different colors than combinations of paint. Grey in paint is the combination of black and white. When black is added to a color painit is called a shade. When white is added to any paint it is called a tint. An art teacher would call grey neutral. The primary colors of light are red, blue, and green. The primary colors of paint are red, yellow and blue.
2007-02-02 14:43:59 · answer #3 · answered by science teacher 7 · 0⤊ 0⤋
Lets say that you ask your brother to take a bag of candy to your friend. Your brother may eat some on the way. You are the light source. The bag of candy is the light. Your brother is the reflector. Your friend is the eye that sees the light. Now if your brother never ate any candy on the way he would be white. If he ate all the candy then he would be black. If he ate half he would be medium grey. If he ate red then he would be light blue (cyan).
The colors of the candy represent the wave length of a particular photon of light. If some light is lost but there is no regard for wave llength then it is some form of grey.
2007-02-02 14:27:46 · answer #4 · answered by Roy E 4 · 0⤊ 0⤋
Just a colour to be enjoyed and appreciated.
Black and White could be considered by some people to be the most boring colours there are.
Mix them together and you get Grey.
One of the most beautiful colours there is.
The colour of Smoke, Fog, Mist, Stormy Skies, Shadows, Veils, Ghosts, Ash, Frost, Clouds, Spiderwebs.
The colour of the most insubstantial things and yet the most ethereal.
2007-02-02 14:17:10 · answer #5 · answered by malcolmg 6 · 0⤊ 0⤋
White is the Absence of all color and Black it the Combination of all colors................ combine and you get Grey
2007-02-02 14:19:24 · answer #6 · answered by mdlbldrmatt135 4 · 0⤊ 2⤋
half black and half white = grey
2007-02-02 14:18:15 · answer #7 · answered by connie sue 5 · 0⤊ 0⤋