Synthesis and Analysis of Color – 6F10.00

Additive and Subtractive Primaries – 6F10.19

  • A slit and its negative (a slat) is placed on the overhead.
  • A diffraction grating is placed in front of the overhead lens, resulting in production of two spectra: One “normal” and the other containing colors such as magenta and cyan.

Location: Jacobs B122 – Shelf 166

Hand-Crank Color Mixing Spinner – 6F10.25


  • Chemiluminescent Light Addition is done by snapping the red, blue, and green light sticks and attaching them to the axle. Dim the lights, turn the crank, and observe a circle of white light.
  • By wrapping black electrical tape on the blue light stick and spinning you can see a band of yellow at the edge of the circle.

Location: Jacobs B122 – Shelf 286

Complementary Spectrum with Slit and Inverted Slit – 6F10.26

  • A slit and “inverted slit” used with Hg and a prism produce the normal line spectra and “inverted spectrum” of complementary colors.

Location: Jacobs B122 – Shelves 166 & 293

Tri-Color LED – 6F10.36


  • Push each button in turn to show the 3 colors (RGB) that light up the Plexiglas triangle.
  • Push each combination of 2 colors to see the resulting color (CMY).
  • Push all 3 buttons at the same time to show the resulting white light from adding RGB.

Location: Jacobs B122 – Shelf 281