Question about the Light spectrum - Kawasaki ZX-10R.net
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post #1 of 19 Old 05-23-2012, 05:11 PM Thread Starter
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Question about the Light spectrum

This is something I've though about recently. The statement black is no colours and white is all the colours I think is flawed. If that's the case wtf is clear.

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post #2 of 19 Old 05-23-2012, 05:18 PM
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lol mind fuck? Its not a color in the sense of light and darkness, but in the case of color pigments it is. If u mix the 3 primary colors u wont get jet black, but ull get a blackish color, but u cant mix any color paint to get white, except in the light spectrum a color reflects the wavelengths in the NM range that our retinal cones respond to.

If that makes sense lol, I kept brain shitting while trying to respond


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post #3 of 19 Old 05-23-2012, 05:20 PM
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black is no color in a sense that if you shine a full spectrum light on a black object, i will not reflect any light. thats why it appears black. White color appears white for the exact opposite reason - it reflects all the light. Clear is something that does not reflect light (relatively speaking).

You can only see objects or colors because of their ability to reflect light.
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post #4 of 19 Old 05-23-2012, 07:40 PM
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post #5 of 19 Old 05-23-2012, 07:56 PM
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"Clear by definition neither reflects nor emits any portion of the visible light spectrum so no, clear is not a color. It transmits light. A prism is clear. White light passing through it is broken into the classic rainbow spectrum. Those colors are a characteristic of the light and not the clear prism. Change the spectral composition of the light and the color mix of the "rainbow" changes. Change (color) the prism and it is no longer clear."

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post #6 of 19 Old 05-23-2012, 09:28 PM
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Ima just say to whats been said. Black is the absorbtion of all colors being emitted, and not transmitting any to your eye. White is the reflection of all colors, transmitting it all back to your eye. Clear is no color, clear is a medium that light can travel through.

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post #7 of 19 Old 05-23-2012, 09:43 PM
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Quote:
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Ima just say to whats been said. Black is the absorbtion of all colors being emitted, and not transmitting any to your eye. White is the reflection of all colors, transmitting it all back to your eye. Clear is no color, clear is a medium that light can travel through.
I agree with this. Clear is a medium (solid, liquid, etc.) with little or no reflective properties.
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post #8 of 19 Old 05-23-2012, 09:45 PM
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Originally Posted by knej29642 View Post
I agree with this. Clear is a medium (solid, liquid, etc.) with little or no reflective properties.
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post #9 of 19 Old 05-23-2012, 09:49 PM
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One thing is how the human eye and brain perceives given image. In that context, both black and white can be considered colors. I don't know how physics defines colors (and if it defines them at all), since most of the electromagnetic spectrum is invisible, and hence has no color at all.
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post #10 of 19 Old 05-23-2012, 10:00 PM
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One thing is how the human eye and brain perceives given image. In that context, both black and white can be considered colors. I don't know how physics defines colors (and if it defines them at all), since most of the electromagnetic spectrum is invisible, and hence has no color at all.
Its defined by wavelength. Each color corresponds to particular amount of energy contained in the wave. The part we are concerned with is the visible light portion, which makes up a very small section of the spectrum. I always forget, but I believe red is the most energetic and has the shortest wavelength, and Violet is the opposite, least energy and longest wavelength. This is all in terms of the visible spectrum though. Infra-Red light has more energy and a shorter wavelength that Visible Red and Ultra-Violet has less a longer wavelength.

Someone correct me if Im wrong, Ive been out of Physics for 2 years now.

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