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> Spectrum

> Powers

> Sensitivity


— Light —


The light spectrum from infrared to ultraviolett not with the wavelength of the light but with its frequency and how it is perceived by the standard observer.


What «Mega» or «Giga« or «Exa» actually means.


The human eye has rods and cones to see brightness and colours. Their sensitivities and average numbers are shown here.

  © 2004 - 2018 by Horo Wernli.