The Width of a Human Hair, Part 1
Every article I read about nano explains the scale in terms of the width of a human hair. Why? Aside from the pedantic point that human hairs have different widths, so it’s not an accurate point of reference, I think it’s not very creative.
A human hair can range from about 20 to 200 microns, and one micron is a thousand nanometres. Take a rough average and round figure of a hundred microns, why not use the hair as the standard comparison for all measurements of size? How far to the pub? Only 100,000 hairs!
Or go the other way, and give nanoscale objects scales relating to random objects. “Researchers at MIT have managed to create a cheese grater only 35nm wide- less than one thousandth of a gnat’s testicle”.
The width of a human hair is a cliché, it’s lazy journalism and it doesn’t help people to visualise scale.Uncategorized