7/25/2019 Chem 336 09 Color ppt

1/26

What gives an apple its red color? How is

color produced?

COLOR!

7/25/2019 Chem 336 09 Color ppt

2/26

How we see color

7/25/2019 Chem 336 09 Color ppt

3/26

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

7/25/2019 Chem 336 09 Color ppt

4/26

Color Wheel

Additive Primaries CMY

Subtractive Primaries RBG

Complementary Colors

7/25/2019 Chem 336 09 Color ppt

5/26

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

7/25/2019 Chem 336 09 Color ppt

6/26

Chevreul worked in the dyeing department of a tapestry factory and

noticed that images on tapestry illustrated several types of optical

mixing.

7/25/2019 Chem 336 09 Color ppt

7/26

Impression: Sunrise 1873 by Claude Monet

oil on canvas

7/25/2019 Chem 336 09 Color ppt

8/26

oil on canvas

A Sunday on La Grande Jatte , 1884 - 86 by Georges Seurat

7/25/2019 Chem 336 09 Color ppt

9/26

Photomicrograph of

the paint surface of

Sunday Afternoon on

La Grande Jatte

7/25/2019 Chem 336 09 Color ppt

10/26

http://www.youtube.com/watch?v=0xyMdjqIshw

Chuck Close

utilizes the

concept of

optical mixing in

his work.

7/25/2019 Chem 336 09 Color ppt

11/26

7/25/2019 Chem 336 09 Color ppt

12/26

The Green Stripe, 1905 by Henri Matisse

oil on canvas

7/25/2019 Chem 336 09 Color ppt

13/26

Boston Cremes, 1969, Wayne Thiebaud, acrylic &

gouache over a color reproduction

7/25/2019 Chem 336 09 Color ppt

14/26

Girl With Ice Cream

Cone 1963

by Wayne Thiebaud

Oil on Canvas

7/25/2019 Chem 336 09 Color ppt

15/26

Back to color mixing! - Examples of Additive Color Mixing

(Mixing Light)

Pointillism

TV and Computer Screens

Newtons Disc

Theater Lights

7/25/2019 Chem 336 09 Color ppt

16/26

Pointillism

7/25/2019 Chem 336 09 Color ppt

17/26

7/25/2019 Chem 336 09 Color ppt

18/26

7/25/2019 Chem 336 09 Color ppt

19/26

The optical effects of a matte vs a glossy paint surface. Which of

the diagrams below represents a matte surface?

7/25/2019 Chem 336 09 Color ppt

20/26

Abstract Painting Blue, 1953 by Ad Reinhardt

oil on canvas

7/25/2019 Chem 336 09 Color ppt

21/26

Colored Objects in Colored Light

7/25/2019 Chem 336 09 Color ppt

22/26

What color will the yellow ball be unsaturated blue light?

7/25/2019 Chem 336 09 Color ppt

23/26

7/25/2019 Chem 336 09 Color ppt

24/26

Paper chromatography can beused to separate dyes in ink

(Lab)

One last item

7/25/2019 Chem 336 09 Color ppt

25/26

Varnished painted surface Painted surface

7/25/2019 Chem 336 09 Color ppt

26/26