Color

1
Color

• Chapter 14 Section 4

2
Visible Light Spectrum
3
Opaque Objects

• Light arriving at an opaque surface is either
  absorbed or reflected.
• Only the wavelengths that are reflected produce
  the color that we see.
• Every other wavelength in the visible light
  spectrum is absorbed.
• Objects that reflect all wavelengths appear
  white.
• Objects that absorb all wavelengths appear black.
  

4
Transmitting Light

• Objects that transmit light are either
• Translucent scatter the transmitted light
• Transparent do not scatter the transmitted light

5
Primary Additive Colors

• Light sources add wavelengths to make a color
• Primary colors of light are red, green, blue
• When these three are combined they add to produce
  white light.
• Other combinations and intensities combine to
  produce every other color we see.
• Additive color is a result of the way our eyes
  detect color.

6
Primary Additive Colors
7
Complimentary Colors

• Red Green
• Yellow
• Green Blue
• Cyan
• Blue Red
• Magenta
• Red-Cyan
• Green-Magenta
• Blue-Yellow

8
Primary Subtractive Colors

• Colored inks or paints subtract wavelengths from
  the white light and make a color.
• Primary colors of pigments are cyan, yellow and
  magenta
• The pigment determines which light will be
  reflected from an object.
• When these three are combined they produce black.

9
(No Transcript)
10
Primary Subtractive Colors