Human Hair Size In Nanometers and More

You probably know that a  nanometer is 1/1,000,000,000 of a meter or 10-9 meters, but do you have a feel for just how small a nanometer is? Here are some examples of nanoscale objects, plus the length of common objects expressed in nanometers. The Amazing Smallness of Our World Your fingernails grow at the rate of about 1 nanometer per second.A single water molecule is about 1.5 nanometers.A strand of human DNA is 2.5 nanometers in diameter.A single hemoglobin molecule is 5 nanometers across.A single bacterium is about 1,000 nanometers long.A strand of hair is about 80,000 to 100,000 nanometers wide.A sheet of paper is 100,000 nanometers thick.An ant is 5 million nanometers long.The human hand is 100 million nanometers long.A 7-foot-tall basketball player is 2 billion nanometers tall.