1 Introduction to Lighting
What we sense as ‘light’ is a range of wavelengths within the electromagnetic spectrum which can be perceived by us through our eyes (visible light). At the low end of this range we can perceive infrared and reds, and at the high end blues and ultraviolet.
The three basic properties of light are: Frequency (or wavelength), which is perceived by us as the colour of light; Intensity (or amplitude), which is perceived by us as the brightness of light; and Polarisation . . .
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