Micrometer: um A metric unit of length measurement= 1x10-6 meters or 0.000001 meters 4x10-5 inches or 0.00004 inches Human hair is approximately 20 micrometers in diameter Monochromatic All objects in a group(electrons, light, X-rays....etc.) have the same energy/wavelength.
(um A metric unit of length; measurement=; 1x10-6 meters or 0.000001 meters)
um A metric unit of length
measurement=
1x10-6 meters or 0.000001 meters