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Forums » Archive » The ongoing debate on science vs. art 
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Joined: 6/19/2001
Posts: 5468
Posted on Monday, October 15, 2001 10:36:00 PM
 
I thought:
Everything we name unscientific or "vague" or "nauka ob oblakakh", does not really mean it has no logic or explaination, it just means some of us did not get it yet...it is however, explainable by logic, expanded logic, expanded incompassing wisdom that is called God....
Note; think of the theory of limits in math...
everything has a reason and a purpose
Joined: 9/3/2001
Posts: 22722
Posted on Monday, October 15, 2001 11:22:00 PM
 
Pigments absorb light, reflecting only the color that you see. For example,
when you mix blue and yellow pigments together, you are mixing together
compounds that absorb blue light (leaving yellow and red, which basically
looks like yellow) and that absorb red (leaving blue). The combination
absorbs both blue and red, (that's both ends of the spectrum), leaving only
green (middle of the spectrum) to be reflected. When you combine blue and
yellow lights, you see both the blue and the yellow, which is composed of
different wavelengths than the color reflected from the mixed pigments.

Color perception is kind of a funny thing; what actually happens is that
cone cells in our retinas are sensitive to different ranges of wavelengths:
basically, red (long wavelengths), green (middle), and blue (short
wavelengths). Their sensitive regions overlap a little, and your brain
processes the inputs from the different sensors to reconstruct about what
the color must be. So, if you see a monochromatic light that's in the
region two types of cones respond to, you see it as one color. Yellow
light, for instance, excites both red- and green-sensitive cones. Mixing
together monochromatic red and monochromatic green light will ALSO excite
both the red and green cones, and your brain will see yellow. As far as it
knows, it's the same color as the monochromatic yellow, but a spectrometer
could easily tell the difference.


The main difference is that TV's, Computer screens, that have Red, Green,
Blue, as their primary colors give off light. In a dark room, you can still
see if a TV or computer is on because the screen gives off light, like a
light bulb. In fact, the screen is made up of thousands of tiny red, green,
and blue lights that are so close together you can hardly see them. By
turning on a Red, Green, and Blue lights that are really close, the TV can
mix the lights and create all kinds of different colors. To figure out what
colors to make, TVs start with black, and begin turning on lights, or adding
colors to get what they want.

The main point is that the Red, Green, and Blue colors a TV uses, produce
light and make colors by adding colors to the light we see.

With art, it is just the opposite. Paper and paint reflect light. White
paper reflects all the light that shines on it pretty much the same. But
colored paints do not do this, they reflect some colors better than others,
and absorb the rest. Black paint reflects hardly any light and absorbs all
colors pretty much the same. Red paint absorbs all colors but red light, and
reflects just red light. Yellow paint absorbs everything but yellow, and so
on. So when you mix two colors, you are deciding which colors to remove
from the light we see. Paint basically subtract light. Red paint subtracts
(or doesn't reflect Green and Blue). Yellow subtracts Blue, and, Blue
subtracts Green and Red. Computer printers use this kind of system where
they use Cyan, Yellow, and Magenta, which are the exact opposites of the
Red, Green, and Blue that TVs use. Cyan subtracts Red, Yellow subtracts
Blue, and Magenta subtracts Green. So, in art, you start with a with piece
of paper or canvas (this is why colors sometimes look different when you use
colored paper) and start removing or subtracting light to get the color you
want. This is why if you mix a lot of different colors together it keeps
getting darker.

So, the main point with paints is that paints make colors by only reflecting
some light and removing (or subtracting) the rest.


Nu i interesno vam etu hernu chitat' ?
Joined: 6/19/2001
Posts: 5468
Posted on Monday, October 15, 2001 11:50:00 PM
 
esli ti ne proyavil interesa ni k odnomu topicu v etom forume, pozvol sprosit tebya shto ti tut delaesh?
P.S. ne lublu nudnikh....osobenno muschin..
Joined: 9/6/2001
Posts: 331
Posted on Tuesday, October 16, 2001 7:39:00 AM
 
Malish, da zuh, nudniy muzhik eto karaul
Joined: 10/16/2001
Posts: 30
Posted on Tuesday, October 16, 2001 9:15:00 AM
 
Ma/\bIIII, do you ever read your own posts?
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