词源 |
stroboscope n."instrument for studying motion by periodic light," 1896, from -scope + Greek strobos "a twisting, act of whirling," from PIE root *streb(h)- "to wind, turn." Earlier as the name of a similar device used as a "scientific toy" [OED]. Related: Stroboscopic (1846). updated on July 20, 2017 |