1 / 14

Color

Discover the wonders of color theory, from the color spectrum to mixing pigments and the science behind blue skies and red sunsets. Unveil the secrets of color mixing by transmission and reflection, and explore how light interacts with different materials.

ckass
Download Presentation

Color

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Color White is the combination of all colors

  2. Spectrum • Sunlight can be split into its component colors • Called the color spectrum (Roy G. Biv) • Red • Orange • Yellow • Green • Blue • Indigo • Violet

  3. Spectrum

  4. Black and White • White is the presence of all colors of light • Black is the absence of any color of light

  5. Color by Reflection • Light energy can be absorbed by a surface • electrons in the surface atoms vibrate • generally some frequencies of light are absorbed while others are reflected • this gives color to objects when illuminated by white light • The color of the object will depend on the color of the light

  6. Color by Transmission • color of a transparent object depends on the color of light it transmits • pigments absorb some light and transmit others • glass transmits all visible colors • a blue glass transmits only blue and absorbs all other color

  7. Sunlight • brightest in the yellow green area • less bright in red and violet regions

  8. Mixing colored light • red + green + blue = white • red + green = yellow • red + blue = magenta • green + blue = cyan • additive primary colors • red: lowest frequency • green: middle frequency • blue: highest frequency http://www.hal-pc.org/~clement/Simulations/Mixing%20Colors/rgbColor.html http://www.explorelearning.com/index.cfm?method=cResource.dspView&ResourceID=11&CFID=822684&CFTOKEN=35660268

  9. Mixing Pigments • mixing pigments is different than mixing colored light • paints contain small particles of pigments • pigments reflect some wavelengths of light and absorb others

  10. Color mixing by subtraction • colors can be mixed together to make any color when printed on white paper • subtractive primary colors • magenta • yellow • cyan

  11. Blue Sky • oxygen and nitrogen molecules scatter light • violet and blue light are scattered the most • without an atmosphere, the sky would be black • clouds (water droplets of broad range of sizes) scatter all visible light making them bright white

  12. Red Sunrise • Red is scattered the least • Sun must go through more atmosphere at dawn and dusk • Red light makes it through the thicker atmosphere at dawn and sunset

  13. Blue water • water absorbs infrared light • water absorbs some red light • in deeper water, no red makes it through • without red, light looks greenish blue (cyan) • we see this greenish blue color through the clear water

  14. Light fingerprint • every element emits a specific group of wavelengths of light • called atomic spectra • can be used to identify the nature of materials

More Related