hodoscope
/ˈhɒdəskəʊp/noun
- Physics an instrument for observing the paths of subatomic particles, especially those arising from cosmic rays【物】描迹仪,宇宙射线描迹仪。
词源
early 20th cent. (denoting a microscope for examination of light paths in crystals)： from Greek hodos 'way' + -SCOPE. The current sense dates from the 1950s.