sensitive electroscope type that is used for detecting charges; it consists of a brass rod with a brass disk at the top, and at the bottom, there are two thin gold leaves in the form of foils, tundlik elektroskoop, mis koosneb messingist vardast, mille ülaosas on messingist ketas, ja allosas on kaks õhukest kuldlehte fooliumide kujul, ja mida kasutatakse laengute tuvastamiseks