Science, Tech, Math › Science Examples of Nanoscale Objects Share Flipboard Email Print A strand of hair is about 80,000 to 100,000 nanometers wide. Westend61 / Getty Images Science Chemistry Chemistry In Everyday Life Basics Chemical Laws Molecules Periodic Table Projects & Experiments Scientific Method Biochemistry Physical Chemistry Medical Chemistry Famous Chemists Activities for Kids Abbreviations & Acronyms Biology Physics Geology Astronomy Weather & Climate By Anne Marie Helmenstine, Ph.D. Chemistry Expert Ph.D., Biomedical Sciences, University of Tennessee at Knoxville B.A., Physics and Mathematics, Hastings College Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. our editorial process Facebook Facebook Twitter Twitter Anne Marie Helmenstine, Ph.D. Updated January 04, 2020 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.