Design

Infrared

Infrared is electromagnetic radiation with longer wavelengths than those of visible light, and is therefore invisible. Slightly more than half of the total energy from the Sun was eventually found to arrive on Earth in the form of infrared. By way of artistic interpretation, some of this became visible light…

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The Primary Colors

The human eye is not a selective instrument; it cannot distinguish two superimposed colors as such. Taking advantage of this fact, in 1801, Thomas Young, and later Hermann von Helmholtz, found that it was possible to match any given colored light using a combination of three primary light sources. Occasionally…

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