|Piezo Technology. Epson (UK) Ltd.|
You are watching: Width of a human hair in mm
|"45 microns, 2 times smaller than the diameter of a human being hair and close to the limit of resolution because that the person eye"||90µm|
|Denny R"s Homepage. Denny & Gayle Rossbach. Palmdale, CA.||"Diameter the a human being hairinches: 0.001; centimeters: 0.00254"||25.4µm|
|Why choose a Water treatment System? Aqua-Fresh drink Water Systems, Inc.||"Particulate contaminants consisting of asbestos, rust, sediment, dirt, and also scale as little as 0.2 microns (1/300th diameter of a human being hair)."||60µm|
|Hair - crucial Facts around Hair. CAQTI Cosmetics, Inc.||"Flaxen hair is the finest, native 1/1500 come 1/500 of an inch in diameter … and also black hair is the coarsest, native 1/450 to 1/140 of an inch."||17–50µm(flaxen)56–181µm(black)|
Hair can be uncovered all over human being body, except for the palms that hands and at the soles of feet. The objective of hair is protective: the hairs on the body keeps a human warm, sleep hairs protect against dust and also dirt native entering the respiratory tract system, and eyebrows avoid sweat from entering the eyes.
The diameter of a person hair go not have actually a typical value due to the fact that different world have various hair structures. Your genetic makeup can cause the width of her hair to differ from that of various other people. Hair color is also a big factor. Black color hair is thicker than is red hair. The weather have the right to also influence the diameter the a hair strand. As the weather gets warmer, the diameter of human body hair increases. Age is an additional factor. Babies and also young kids have finer hair 보다 adults. As a human being grows up, your hair i do not care thicker and also stronger. Another factor is that, the closer come the source of the hair, the thicker a strand of hair would be.
In mine research, ns have discovered the diameter of human hair to selection from 17 come 181µm (millionths the a meter).
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Brian Ley -- 1999
|SEM photo of the week: just their barber knows because that sure. MertKeçeli, JoanneWen, SaraSaad, GlennElert. MidwoodScience (7November2011).||60~80µm|
Editor"s supplement -- 2011