The world is full of colors. Most of the colors we see around us can be created on common digital displays simply by superposing light with three different wavelengths. However, no mixture of colors can produce a fully pure color identical to a spectral color. Using a smartphone, students can investigate the main features of primary color addition and understand how colors are made on digital displays.
REFERENCES
1.
D.
Osorio
and M.
Vorobyev
, “Photoreceptor spectral sensitivities in terrestrial animals: Adaptations for luminance and colour vision
,” Proc. R. Soc. B
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, 1745
–1752
(2005
).2.
Diffraction glasses are available at, e.g., www.rainbow symphonystore.com/digrglli500l.html.
3.
For example, Paulmann LED 230 V, 0.6 W, E14, yellow.
© 2013 American Association of Physics Teachers.
2013
American Association of Physics Teachers
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