Chem 336 09 Color ppt
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Transcript of Chem 336 09 Color ppt
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What gives an apple its red color? How is
color produced?
COLOR!
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How we see color
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Additive Color Mixing Demohttp://mc2.cchem.berkeley.edu/Java/emission/Java%20Classes/emission.html
Color Mixing Demoshttp://micro.magnet.fsu.edu/primer/java/scienceopticsu/light/lightandcolor.html
Color Mixing
Additive Color Mixing
- Mixing Light
Subtractive Color
Mixing Mixing
Pigments
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Color Wheel
Additive Primaries CMY
Subtractive Primaries RBG
Complementary Colors
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The development of the theory of color by scientists such
as Michel-Eugene Chevreul contributed to the color choicesand painting style of many artists in the late 1800s. In his
1839 book The Principles of Harmony and Contrast of Colors,
Chevreul noted that the intensity of a color is affected by its
relationship to a neighboring color.
a. complementary colors
b. analogous colors
c. value contrast
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Chevreul worked in the dyeing department of a tapestry factory and
noticed that images on tapestry illustrated several types of optical
mixing.
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Impression: Sunrise 1873 by Claude Monet
oil on canvas
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oil on canvas
A Sunday on La Grande Jatte , 1884 - 86 by Georges Seurat
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Photomicrograph of
the paint surface of
Sunday Afternoon on
La Grande Jatte
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http://www.youtube.com/watch?v=0xyMdjqIshw
Chuck Close
utilizes the
concept of
optical mixing in
his work.
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The Green Stripe, 1905 by Henri Matisse
oil on canvas
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Boston Cremes, 1969, Wayne Thiebaud, acrylic &
gouache over a color reproduction
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Girl With Ice Cream
Cone 1963
by Wayne Thiebaud
Oil on Canvas
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Back to color mixing! - Examples of Additive Color Mixing
(Mixing Light)
Pointillism
TV and Computer Screens
Newtons Disc
Theater Lights
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Pointillism
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The optical effects of a matte vs a glossy paint surface. Which of
the diagrams below represents a matte surface?
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Abstract Painting Blue, 1953 by Ad Reinhardt
oil on canvas
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Colored Objects in Colored Light
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What color will the yellow ball be unsaturated blue light?
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Paper chromatography can beused to separate dyes in ink
(Lab)
One last item
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Varnished painted surface Painted surface
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