Increase in diameter and length of hair when relative humidity is increased from 0% to 100%

Range diameter ~14%: length <2 %
Organism Human Homo sapiens
Reference Robbins, Clarence R. Morphological and macromolecular structure, pp.1-62, chapter 1 in the book Chemical and physical behavior of human hair / Clarence R. Robbins.-2nd ed (2002) p.28 top paragraph
Primary Source [78] Paul B. Stam, Robert F. Kratz, Howard J. White, JR. The Swelling of Human Hair in Water and Water Vapor. Textile Res. J. 22, 448 (1952) link
Method Primary source abstract: "Data are presented on the swelling of free and strained hair fibers in water and water vapor."
Comments P.28 top paragraph: "For example, from 0% to 100% relative humidity, hair increases nearly 14% in diameter, but less than 2% in length [primary source]."
Entered by Uri M
ID 116476