Piezo Technology. Epson (UK) Ltd.

You are watching: Thickness of a hair in inches

"45 microns, 2 times smaller sized than the diameter of a human hair and close come the border of resolution because that the person eye"90µm
Denny R"s Homepage. Denny & Gayle Rossbach. Palmdale, CA."Diameter of a person hairinches: 0.001; centimeters: 0.00254"25.4µm
Why choose a Water treatment System? Aqua-Fresh drinking Water Systems, Inc."Particulate contaminants consisting of asbestos, rust, sediment, dirt, and scale as tiny as 0.2 microns (1/300th diameter the a human being hair)."60µm
Hair - crucial Facts around Hair. CAQTI Cosmetics, Inc."Flaxen hair is the finest, native 1/1500 to 1/500 that an inch in diameter … and also black hair is the coarsest, from 1/450 to 1/140 of an inch."17–50µm(flaxen)56–181µm(black)

Hair can be discovered all over person body, except for the palms that hands and also at the soles that feet. The purpose of hair is protective: the hair on the body keeps a person warm, sleep hairs prevent dust and also dirt native entering the respiratory tract system, and eyebrows avoid sweat from entering the eyes.

The diameter the a person hair walk not have a typical value due to the fact that different world have various hair structures. Your genetic makeup can reason the width of her hair to differ from that of various other people. Hair shade is additionally a big factor. Black color hair is thicker than is red hair. The weather have the right to also affect the diameter the a hair strand. Together the weather it s okay warmer, the diameter of body hair increases. Age is an additional factor. Babies and young kids have finer hair than adults. Together a human being grows up, their hair i do not care thicker and stronger. An additional factor is that, the closer come the root of the hair, the thicker a strand the hair would be.

In mine research, i have discovered the diameter of person hair to variety from 17 come 181µm (millionths the a meter).

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Brian Ley -- 1999

SEM picture of the week: only their barber knows because that sure. MertKeçeli, JoanneWen, SaraSaad, GlennElert. MidwoodScience (7November2011).60~80µm
Student1: 77µm
Student2: 60µm
Student2: 68µm
Student3: 71µm

Editor"s complement -- 2011