Tuesday, January 17, 2012

Additional Comments #2

I enjoyed reading about color. I know of a several people that use CMYK color model and I have heard horror stories of the printers not lining up the colors correctly thus creating a shifted image. I have seen this in the Reading Eagle over the years, particularly with photos.

Reading about CSS has me a little excited to be getting to some actual site building.

Here is a little bit of information on color that might perplex some people:
"The color of the objects that we see are largely due to the way those objects interact with light and ultimately reflect or transmit it to our eyes. The color of an object is not actually within the object itself. Rather, the color is in the light that shines upon it and is ultimately reflected or transmitted to our eyes. We know that the visible light spectrum consists of a range of frequencies, each of which corresponds to a specific color. When visible light strikes an object and a specific frequency becomes absorbed, that frequency of light will never make it to our eyes. Any visible light that strikes the object and becomes reflected or transmitted to our eyes will contribute to the color appearance of that object. So the color is not in the object itself, but in the light that strikes the object and ultimately reaches our eye."
This is taken from Light, Absorption, Reflection and Transmission.

In essence, objects only reflect the color it does not absorb. A red apple is not actually red. It absorbs every color but red, and that color red is reflected off of it to our eyes.
Another way to understand it is if you think of it this way: If you hold a black piece of paper in front of a mirror, what color is the mirror? It's not black. The mirror is only reflecting the black and is itself not black in color.

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