4 ms·
> a human hair is just under 100 nanometers in diameter Does he mean micrometres? From wikipedia[0]: > The diameter of human hair varies from 0.017 to 0.18 mi
by vertere 8y ago
> a human hair is just under 100 nanometers in diameter
Does he mean micrometres? From wikipedia[0]:
> The diameter of human hair varies from 0.017 to 0.18 millimeters (0.00067 to 0.00709 in).
[0]: https://en.wikipedia.org/wiki/Hair#Description https://en.wikipedia.org/wiki/Hair#Description
- mallomarmeasle 8y agoYes, average human hair is somewhere around 80 microns, based on ethnicity/nationality. See figure 5 here: http://www.jle.com/fr/revues/ejd/e-docs/diversity_in_human_hair_growth_diameter_colour_and_shape._an_in_vivo_study_on_young_adults_from_24_different_ethnic_groups_observed_in_the_five_continents_306744/article.phtml http://www.jle.com/fr/revues/ejd/e-docs/diversity_in_human_h... When I saw this phenomena in person, it was apparent that there was no way that the diameter of the spider silk is close to the diameter of human hair.
- jwilk 8y agoIt looks like the article has been fixed; it now reads: > a human hair is 80,000 to 100,000 nanometers in diameter