ストロボ
ストロボ · sutorobo · JLPT N1 · noun
stroboscope (literally: strobo; strobe lamp; stroboscopic lamp)
💡 From Greek strobos, whirling: a stroboscope makes spinning things look still.
The Japanese word is a katakana shortening of strobe, from the Greek for whirling. The lamp gives brief, rapid flashes of light.