cp physics mr miller n.
Download
Skip this Video
Download Presentation
Color Notes

Loading in 2 Seconds...

play fullscreen
1 / 13

Color Notes - PowerPoint PPT Presentation


  • 111 Views
  • Uploaded on

CP Physics Mr. Miller. Color Notes. General Information. Sir Isaac Newton – first to realize white light composed of different colors Prisms – separate white light into colors of light making up the visible light spectrum Each color has its own wavelength and frequency

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Color Notes' - verna


Download Now An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
general information
General Information
  • Sir Isaac Newton – first to realize white light composed of different colors
  • Prisms – separate white light into colors of light making up the visible light spectrum
  • Each color has its own wavelength and frequency
  • Higher frequency = greater energy
    • Red light – lowest frequency so least energy
    • Violet light – highest frequency so most energy
seeing colors
Seeing Colors
  • Color is the property of light reaching the eye
  • Objects absorb some colors and reflect others
  • We see the reflected colors!!
color rule 1
Color Rule #1
  • The color of an opaque object depends on the frequency of light it reflects.
    • All colors reflected and none absorbed = white
    • No colors reflected and all absorbed = black
color rule 2
Color Rule #2
  • Color of an opaque object depends on the color of light shown on it.
    • Red object - reflects red light
      • Shine white light on it – looks red
      • Shine red light on it – looks red
      • Shine green light on it – look black
color rule 3
Color Rule #3
  • Color of a transparent object depend on the color of light it transmits.
    • Blue filter transmits only blue light through it.
      • Shine white light on it – blue passes through.
      • Shine blue light on it – blue passes through.
      • Shine red light on it – no light passes through.
visible spectrum
Visible Spectrum
  • ROY G BIV – red, orange, yellow, green, blue, indigo, violet
  • Polychromatic = many frequencies of light colors together
  • Monochromatic = single frequency of light
primary colors of light
Primary Colors of Light
  • Red, Blue, Green
  • When added together they produce white light
secondary colors of light
Secondary colors of light
  • Magenta, Cyan, Yellow
  • Produced when two primary colors added:
    • Red + Blue = Magenta
    • Blue + Green = Cyan
    • Green + Red = Yellow
complementary light colors
Complementary Light Colors
  • A primary light color and a secondary light color that will produce white light when added together
  • Complements:
    • Red + Cyan
    • Green + Magenta
    • Blue + Yellow
primary pigments
Primary Pigments
  • Pigments = chemicals which absorb certain frequencies of light and reflect others
  • Primary pigments absorb one primary color of light and reflect two primary colors
    • Magenta – absorbs green, reflects red and blue
    • Cyan – absorbs red, reflects green and blue
    • Yellow – absorbs blue, reflects red and green
  • So a primary pigment absorbs its complement!
secondary pigments
Secondary Pigments
  • Absorb two primary pigments and reflect one primary pigment
  • Red, Blue, Green
light colors vs pigments
Light colors vs. Pigments
  • Primary colors of light = secondary pigments
  • Secondary colors of light = primary pigments
  • Mixing colors of light = ADDITIVE process
    • More colors added – color of light gets lighter
  • Mixing pigments = SUBTRACTIVE process
    • Pigments absorb color, so more pigments absorb more colors of light and less reflected for us to see, gets darker
ad