1. LIGHT AND COLOR Dispersion – white light breaks down
into its components

2. Opaque
Translucent
Transparent ?

3. > Light and Color When light strikes an object, the light can be …
Reflected
Absorbed
Transmitted
Opaque
Transparent
Translucent – scatter as
the light is
transmitted

4. An opaque object is the color of the light it . . .
Reflects

5. A Transparent or Translucent object is the color of light it …
Transmits

6. Red Blue Green Yellow = Red + Green Cyan = Green + Blue
Primary Colors of Light are . . .
Red Blue Green
Secondary Colors of Light contain equal amounts of
two Primary Colors
Yellow = Red + Green
Cyan = Green + Blue
Magenta = Red + Blue

7. Red + Blue + Green = White
WHITE LIGHT
Red + Blue + Green = White

8. PIGMENTS The primary colors of pigments are cyan magenta yellow
Colored substances used to color other materials
– inks, paints, dyes
The color of a pigment is the color it reflects
The primary colors of pigments are
cyan magenta yellow
secondary red blue green
More pigments combined = darker colors
– less light reflected, more absorbed

9. Refraction and Lenses

10. Reflection and Mirrors
Regular Reflection
Light reflects off a smooth surface
Diffuse Reflection
Light hits a bumpy or uneven surface

11. Plane Mirror
Produces a Virtual Image
A copy that is upright and actual size
Concave Mirror
Produces a real image that is upside down when
reflected rays meet
Produces a virtual image that is upright and larger
than the object when object is between focal
point and mirror
Convex Mirror
Produces an image that is always virtual and smaller
that the object because the rays never meet

12. Refraction = when light rays enter a new medium,
the change in speed or direction causes
them to bend
Index of Refraction = how much the ray of light bends
when it enters a material
Mirage = light travels faster through hot air than
through cool air. Light rays closer to the
ground may be hotter causing the light to
bend more.

13. LENSES
A curved , transparent material that is curved
to refract light
Convex - real or virtual image
Concave - virtual image