Hatrack River Forum: Nothing to do with OSC, but curious anyway

This is topic Nothing to do with OSC, but curious anyway in forum Books, Films, Food and Culture at Hatrack River Forum.

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Posted by Master Kakashi (Member # 6165) on :

OK, this has nothing to do with OSC but I thought I'd ask anyway, since we're all intelligent here to give a good response.

This sound stupid, having been resolved somewhere else, but: isn't black and white a color? When you say there is a "colorless" tv show, it's in black and white, so does that mean that they aren't colors? So what does that make them? Being parts of different kinds of paints, crayons, and markers, doesn't that make them colors? I am so confused. [Confused]

Posted by msquared (Member # 4484) on :

Technically, white is the presence of all colors and black is the lack of all color.

With light and color reflection, a material will reflect the color that it is and absorb all the other wavelengths. So something that is green reflects the green light waves and we see green. Something that is white has all colors and so reflects all colors as white. Something that is black has no colors and absorbs all the light.

msquared

Posted by lcarus (Member # 4395) on :

On the other hand, black is a mixture of all pigments, and white is the absence of pigmentation. For what it's worth.

:-p

Posted by Mankind (Member # 2672) on :

Also, color is mixed into the broadcast signal differently. Black and white is merely the "brightness" or, as we say in the biz, "Luminance" portion of the signal. The colors are transmitted as a separate part of the signal, hence black and white broacasts are "colorless."

Posted by Anna (Member # 2582) on :

I would have ask the question on the other side

Posted by Nick (Member # 4311) on :

Well, everybody else explained what black and white are, but if they're not colors, what are they?

Grey, black, white, and all variants made possibly by mixing the three are called "shades". [Smile]

Answer your question?

Posted by sndrake (Member # 4941) on :

Master K,

You really need to check the other threads out on this side of the forum. Your question has as much to do with OSC as the majority on this side do. [Smile]

(which means not much to not at all)

Posted by TheClone (Member # 6141) on :

Wait, I thought that black was the presence of all colors and white was the presence of none? White LIGHT contains all colors, but the color white doesn't, if you mix a bunch of paint together, don't you end up with a black?

Posted by Xavier (Member # 405) on :

You're talking about pigments when paint is involved. Its the difference between additive and subtractive color mixing.

quote:
Additive Colors (Mixtures of Light)

Black + Red = Red
Black + Green = Green
Black + Blue = Blue

Black + Red + Green = Yellow
Black + Red + Blue = Magenta
Black + Blue + Green = Cyan

Black + Red + Green + Blue = White

Subtractive Colors (Mixtures of Pigments)

White - Red = Cyan
White - Green = Magenta
White - Blue = Yellow

White - Red - Green = Blue
White - Red - Blue = Green
White - Blue - Green = Red

White - Red - Green - Blue = Black

From efg2.com.

Posted by Xavier (Member # 405) on :

This site here has a cool demo of it in both additive and subtractive.

Posted by Annie (Member # 295) on :

Yes - to put it basically, pigment black is different than light black.

The primary colors of pigments are cyan, yellow and magenta. If you mix them all, you get black.

The primary colors of light are red, green, and blue. If you mix them all, you get white.