Light and c o l o r

LIGHT AND COLOR

When light strikes an object When light strikes an object it can do

one of three things.

•Light passes through objecttransmitt

ed

•Light bounces off object

reflected

•Light does not pass through or reflect

absorbed

Refle

cted Absorbed

Transmitte

d

Why you shouldn’t wear black t-shirts in the summer!

Transparent, Translucent, & Opaque Transparent – light passes through;

clear Translucent – scatters light as it

passes through, details are blurred Opaque – reflects or absorbs ALL of

the light; cannot see through it

Transparent vs. Translucent

The Color of Objects

The color of an object depends on the material of the object and the color of light striking it.

OPAQUE OBJECTS: they are the color of the light they REFLECT.

TRANSPARENT & TRANSLUCENT OBJECTS: they are the color of light they TRANSMIT.

OPAQUE OBJECTS – REFLECT!!

Bananas are yellow because they REFLECT yellow light!

Leaves are green because thechlorophyll in leavesreflect green light andabsorb the other colors.

TRANSPARENT & TRANSLUCENT - TRANSMIT

Filter appears green

because it TRANSMIT

S only green light.

What color does it appear to be?

Colored glass transmit they color they appear!

The colors of objects can change under different color lights.

Mixing Colors of LIGHT The primary colors of light are:RED, GREEN, and BLUE.When they are mixed in equal

amounts they combine to make WHITE light.

Mixing Colors of PIGMENTS

Inks, dyes and paints contain PIGMENTS.

The primary colors of pigments are:MAGENTA, YELLOW and CYANWhen pigments are added

together, Fewer colors of light are reflected (more are absorbed). For this reason, it is called SUBTRACTIVE.

Notice they mix to make BLACK!

Black absorbs allcolors of light!

LIGHT vs. PIGMENTS

Adios!