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Nanometre
One millionth of a millimetre 1, or one billionth of a metre or 10 -9 of a metre. Written as nm. Measurement used to describe wavelengths of light. Below 400nm are ultraviolet rays and above 700nm are the infrared rays.
References
1 Case, D., 1985, Motion Picture Film Processing, Media Manuals, Focal Press, London, Boston
The National Film and Sound Archive of Australia acknowledges Australia’s Aboriginal and Torres Strait Islander peoples as the Traditional Custodians of the land on which we work and live and gives respect to their Elders both past and present.