Color, Form, and Distance - North Ridgeville City Schools
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Transcript Color, Form, and Distance - North Ridgeville City Schools
COLOR, FORM,
AND DISTANCE
COLOR
The color of an object is determined by the
wavelengths of light that object absorbs and
reflects.
When you paint an object, you are applying a
pigment that selectively absorbs and reflects
different wavelengths.
COLOR
Color is an illusion.Your brain tells you that
things have color. All color wavelengths are
absorbed except those wavelengths that
produce that color.
Ex. If you see a wall painted red, all
wavelengths are being absorbed, except the
red wavelength.
COLOR SPECTRUM
The color spectrum is easily remembered
with the acronym ROY-G-BIV from the
longest to shortest waves (red-orangeyellow-green-blue-indigo-violet)
Red-Orange-Yellow-Green-Blue-Indigo-Violet
(longest
shortest)
WAVELENGTHS
There can be a broader wavelength than red,
but we can’t see it
Ex. Radio waves.
There can be a thinner wavelength than
violet. But we can’t see that either
Ex. Microwave or ultraviolet waves
TWO THEORIES OF COLOR VISION
Trichromatic Theory: The human
eye has three types of cones (red, green
and blue) and thus all color perception
must be due to mixing of these three
colors.
Uses red, green and blue in staggered forms. This
is how a TV works (red, green, blue projectors).
TRICHROMATIC TV SCREEN
COLOR VISION
Trichromats- People with normal color vision who can
discern all the colors of the visible spectrum- red, green,
and blue-violet- as well as colors formed by various
combinations of these hues.
Monochromats- People who only see in black and white
About 1 in every 40,000 people
Dichromats- People who lack one of the 3 types of cones,
making it difficult to distinguish between certain types of
colors.
People who are colorblind (red-green most common in
men 8%; 1% in women)
TWO THEORIES OF COLOR VISION
Opponent-Process Theory: Colors
are paired and are antagonists (red vs.
green, blue vs. yellow, white vs. black).
If a cone is responding to a red wavelength, it
cannot respond to a green one at the same
time.
OPPONENT-PROCESS
OPPONENT-PROCESS
LILAC CHASER
http://en.wikipedia.org/wiki/Lilac_chaser
COLOR PERSONALITY TEST
http://www.eyetricks.com/illusions.htm
http://www.viewzone.com/luscher2.html