How wide is a human hair?

nanoparticles are usually 500 - 100000 times larger than a human hair, since they are in the size range 1 - 100 nm.

Which is bigger, 10 or 1 nm?A nanometer is 10 times bigger than the size of an atom.

A nanometer is one billionth of a meter.The nanometer is represented by the symbol 'nm' in the international system of units.One nanometer can be written as 1 x 10-9 meters.