noun
ballistic galvanometer
A specialized instrument for measuring electric charge or current pulses; used in physics and electrical engineering.
衝撃検流計は、短時間の電流パルスを測定するのに使われる。
A ballistic galvanometer is used to measure short-duration current pulses.
Compound of 衝撃 (shock, impact) + 検流計 (galvanometer). The exact historical derivation is uncertain; the term is a technical coinage.