Upcoming Classes

Tuesday, Dec. 4th

Third set of Oral Presentations

Assignment due:

* Last term paper or oral presentation

Thursday, Dec. 6th (Last day of class)

Making Holograms (Meet in Science Bldg, Room 133)

Assignment due:

* Homework #7 (Optical Instrument)

* Written summary of your MUSE workshop activities

Oral Presentations (III)

The following persons will give oral presentations on Tuesday, December 4th :

• Remmel, Katherine• Sugiura, Ayuka• Yamaguchi, Asuka• Zeber, Emily,• Dinh, Phiphi

For everyone else, term paper is due on that date.

Homework 5: Exploratorium

Due Thursday, November 29th

Extra Credit: San Jose Ballet

See a performance of San Jose Ballet in San Jose Center for Performing Arts (Nov. 15th – 18th ).

Turn in your ticket receipt. Worth one homework assignment or three quiz/participation credits.

Ramon Moreno in CARMINA BURANA

Extra Credit: San Jose Museum of Art

Visit the San Jose Museum of Art. Turn in yourticket receipt. Worth two quiz/participation credits.

Richard Diebenkorn, Untitled (Albuquerque), 1952 Joan Miró, Untitled from Paroles Peintes, 1967.

Final ExamTuesday, December 18th, 1215-1430 Exam will have eight short essay questions (4-8

sentences).Final exam will be based on the reading

assignments and lecture topics since the midterm (see calendar).

The exam counts as two homework assignments (out of a total of nine).

May skip up to two homework assignments; if you don’t, I’ll drop the lowest scores.

Course Grade

The grade in the class is based on:

• First Term Paper

• Second Term Paper

• Oral Presentation

• In-class Participation (Quizzes, Activities)

• Homework (Final counts as 2 homeworks)

Each counts towards 20% of your grade

Student Evaluations

Please follow the instructions given by the volunteer proctor

Making Color

Paint

For thousands of years, paint has been a primary medium of the visual arts.

Altamira, Spain, 15-20,000 BC

Saharan Africa, 50,000 BC

Pigments

Paint is a suspension of pigment particles.

Different types of paint (watercolor, acrylic, oil, gouache, etc.) are just different binding solutions for holding pigment.

Activity: Mixing Paint

Red

Red +Yellow

Yellow

Red + Green

Red +Blue

Yellow+ Blue

Green

Green+ Blue

Blue

Squeeze out about as much as you put on a toothbrush

Mix different combinations of paint pigments to see the resulting color and value.

Paint 9 small squares, with 5 being various mixtures.

Acrylic paint is water-soluble but almost impossible to remove when dry so clean stains quickly.

Paint Mixing

Appealing palette of colors

Muddy palette of colors

Maxwell Color Disk

Disk painted half red, half blue looks magenta when rapidly spinning.

Mixing Blue & Red Paint

Mixing paint or ink is different from adding colors together by light.

Mix of blue and red paint produces a blackish brown

Spectral Reflectance Curves

                                                      

When white light shines on a colored object, some photonsabsorbed, others reflected by the object’s surface.

White Red

Name That Pigment

White Red Burnt Sienna

BLUE GREEN RED

0%

100%BLUE GREEN RED BLUE GREEN RED

Name That Pigment

Dark Greenish Cyan

Bright Yellow

BLUE GREEN RED

0%

100%BLUE GREEN RED

Blue

BLUE GREEN RED

Artist’s Handbook

These spectral reflectance curves and those of many other standard pigments are found in Mayer’s book.

Reflectance of Pigment Mixtures

Specifying a color by mixing lights is a simple additive process.Reflectance of pigment mixtures is far more complicated.

Mixing Yellow & Blue

Bright Yellow

Blue

BLUE GREEN RED BLUE GREEN RED

&

Bluish Green

BLUE GREEN RED

Yellow absorbs much of the Blue

Blue absorbs much of the Red

Mixing Red & Blue

Blue

BLUE GREEN RED

&

Crap

BLUE GREEN RED

Red

BLUE GREEN RED

Printing InksPrinting inks typically use only three bright pigments:

• Yellow• Magenta• Cyan

Yellow

Cyan

Magenta

Red

Green

Blue

Subtractive Color

Find colors of mixtures by simple color “arithmetic.”

Yellow = Red+GreenCyan = Blue+GreenMagenta = Blue+Red

So mixing:Yellow & Cyan = Green

Yellow

Red

R

Y

B G

M

C

Yellow

Cyan

Magenta

Red

Green

Blue

Mixing Yellow & Cyan

Bright Yellow

BrightCyan

BLUE GREEN RED BLUE GREEN RED

&

Green

BLUE GREEN RED

Four Color Printing

Magenta Yellow Cyan Black

Magenta+ Yellow+ Cyan

All Four

Green balloon printed with mix of yellow and cyan inks

Check Yourself

Magenta Yellow Cyan Black

Which inks are mixed for the bright red balloon and dark red dress?Magenta and Yellow with some black for the dark red dress.

Next Lecture Third Set of Oral Presentations

Remember:

Assignment due:

Term paper or Presentation

Color and Value

Henri Matisse, Woman With Hat, 1904-5

Color and Value

Which of these two versions looks better to you?

Color and Value

Color and Value