One billionth of a meter.
A unit of length equal to one billionth of a meter (.000000001 meter).
Is a unit of measurement of light wavelength. A nanometer is one millionth of a millimeter. Once called a millimicron, it is used to represent wavelength. Abbreviated nm.
Equivalent to 0.039 micro-inches
1 nanometer is equal to: Metric kilometer 1e-12 meter 1e-09 decimeter 1e-08 centimeter 1e-07 millimeter 1e-06 micrometre (micron) 0.001 angstrom 10
[http://www.convert-me.com/en/convert/units/length/length.nanometer.en.html nanometer (Distance and Length, Metric)]
Wavelenghts table for electromagnetic emission.
dark light = low intensity
bright light = high intensity
molecule DNA etc. destructive UV ≈ 200nm (thank you ozonelayer thing;or else we all would grow extra limbs :P )
UV = erazing for electronics ≈ 300nm
light UV < 400nm
violet = 405nm
blue = 430nm
deep blue = 450nm
infrared ≈ 1000nm
FM radio ≈ 1±0.5m
... well might someone explain where the fnord magenta is placed in the electromagnetic spectrum ?!?? :/