Nancy McGuire

is a freelance writer based in Silver Springs, Maryland. Contact her at nmcguire@wordchemist.com. Reprinted with permission from the January 2021 issue of TLT, the official monthly magazine of the Society of Tribologists and Lubrication Engineers, an international not-for-profit professional society headquartered in Park Ridge, Ill., www.stle.org. Available at https://www.stle.org/files/TLTArchives/2021/01_January/Feature.aspx