The mysterious nature of time

[Ruth]

What is polarized light? -- Polarization is the aligning of vibrations in a transverse wave, usually by filtering out waves of other directions. Polarized light waves only travel vertically or horizontally -- when combined at right angles they block each other out and no net light can be detected.

Source: http://wiki.answers.com/Q/What_is_polarized_light

I know it isn't the same thing, but this reminded me of a demonstration I saw at a seminar produced by Kodak back in my film camera days. The instructor was illustrating the additive properties of light. With pigments, white is the absence of color.

Subtractive color: http://en.wikipedia.org/wiki/Subtractive_color


But with light, white is the PRESENCE of color.

Additive color. http://en.wikipedia.org/wiki/Additive_color

Interesting to study the way light works to allow us to see colors.