Is clear a color?

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No tint, no hue, no saturation. Clear is colorless, period.

The fact is no one knows what light is.

Why is it that a beam of light can zap through a foot thick sheet of clear glass like it isn't there, but will be stopped dead by a thin sheet of carbon paper?

And if you "tint" the glass so that only "blue" comes through then isn't that a factor of the glass itself?

"Light is a wave", "light is a particle". What the heck does that mean really? Are there "blue" particles that pass through while the others bounce off or get stuck in the glass?

Do you remember when your science teacher got a magnet, a piece of paper and some iron filings to show you "magnetic lines of force"?

I demanded to know WHAT EXACTLY are magnetic lines of force?

That embarrassed him because he didn't know. Now I understand that no one knows.

We can make microchips and land on the moon but we really have no idea what light or magnetism or gravity are.

because glass doesn't slow it down like water or other stuff does, I think this has already been explained.

If you add blue (probably a mineral) to glass, then it will be a tinted glass. Don't know what's so complicated about that.

Already explained.
Read the thread.

No it hasn't. Glass is quite heavy and dense. Why can light go through a foot of glass when it can't go through one piece of black paper?

No one has EVER explained that except to state the obvious. "Because it does"

http://en.wikipedia.org/wiki/Translucent
may not answer your question, but you could still find out some more information

No.

One model for why that happens (I'm not sure if there are others) is that in order for a photon to be absorbed there must be an energy level difference (of the electrons' states of the material) available that is equal to it's energy. So, if there aren't any level jumps that can accommodate visible wavelength photons' energy
they'll pass right through.

I.e. metals have lots (a continuous band) of levels available, which allows them to absorb photons of nearly any energy, so they block everything from RF to x-rays.

(Actually, the photons are absorbed and re-emitted -- but the re-emission is in a random direction, so the light is actually being scattered.)

Isn't clear a degree of transparency? (I thuink this is also called degrees of opacity)