Color Mixing Lab
Colors can be made from additive contributions of red (R), green (G) and blue (B).  Using chemiluminescent light sticks (Glo-sticks) and a spinning device, red, green, and blue Glo-sticks produce a disk of white light as shown left.  

By covering portions of the different sticks, various color bands can be produced demonstrating the color addition process.  Black electrical tape was used to block light from the selected Glo-sticks as shown in the first photo below.

andyRGBwedges.JPG (29013 bytes)
Fast shutter speed captures RGB wedgeswhitedisk.jpg (23488 bytes)
White light appears as the RGB sticks spin fast!



 
spinner assembly and sticks.jpg (39741 bytes) DSC02856.JPG (135719 bytes) DSC02857.JPG (157196 bytes) spinnerstill.JPG (17556 bytes) rainbow2redder.JPG (23816 bytes)  

The secondary colors Magenta, Cyan and Yellow are produced 
by completely covering one of the RGB Glo-sticks with black tape.  
magenta.JPG (26854 bytes)   cyan.JPG (27576 bytes)   yellowgreen.JPG (24548 bytes)
Cover green stick       Cover red stick      Cover blue stick
More combinations:

DSC02876.JPG (125488 bytes)DSC02882.JPG (154804 bytes)

DSC02874.JPG (127624 bytes)DSC02875.JPG (139832 bytes)

DSC02866.JPG (144569 bytes)DSC02865.JPG (148969 bytes)

DSC02857.JPG (157196 bytes)DSC02856.JPG (135719 bytes)

DSC02851.JPG (149187 bytes)DSC02852.JPG (118560 bytes)