Where does “elektroskopo” come from?
elektroskopo (Esperanto) comes from Esperanto elektro-, from Esperanto elektro, from New Latin ēlectricus, from New Latin ēlectrum, from Ancient Greek ἤλεκτρον — amber; alloy of gold and silver, electrum.
elektroskopo (Esperanto): electroscope
Ancestry of “elektroskopo”, step by step