Does a color television work by color addition or by color subtraction?

Question

Which dots must be struck by electrons to create the color yellow?Magenta? White?

Answer 1

Color television works by color addition using the RGB system

You get all of the variety not only by adding a color (red / green / blue), but by modification of color INTENSITY (0,1,2,3,4,5,6,7,8, 9,A,B,C,D,E,F).

Answer 2

Yellow: red and green

Magenta: red and blue

White: red, blue and green

Answer 3

The way to remember this is that if you had ink it would be color subtraction.  If you mixed all the bottles of ink or paint together you'd get black.

The opposite is true of light.  If you mix colors of light together you get white.

So since a TV uses light and not ink/paint, it's obviously color addition.

Remember it b/c when you add more colors with ink, it "subtracts" and gets more black.  When you add more colors with light, it "adds" and gets more white.  This is a bit counterintuitive.

Also, a TV uses three primary colors: red, green, and blue.

To answer the rest of the question, you need to know the "recipe" for making each color via addition.

Here's a quick explanation with a diagram that answers the rest of your question.  I'd just type in the answer but you should skim the diagram so that you remember the pattern.

http://www.glenbrook.k12.il.us/gbssci/ph...