A nanometer (nm) is a metric unit of spatial measurement that is one billionth (1×10-9) of a meter. It is commonly used in nanotechnology, the building of extremely small machines. ... Coating thickness is often measured in nanometer scale, and corrosion progression can also be measured in nanometers.

What is smaller 1 nm or 100 nm?

A nanometer is one billionth of a meter. Nanoparticles are small particles having at least one dimension that is smaller than 100 nanometers. 1. Examine the metric ruler.

What is 1 nm long?

A nanometer is a unit of measurement for length just as you have with meters and centimeters. A nanometer is one billionth of a meter, 0.000000001 or 10^-9 meters.