Helmut Ruska Set the Basis for the __ Microscope
This page is the CodyCross answer for the clue below from Inventions, Group 56, Puzzle 4.
Question is: Helmut Ruska Set the Basis for the __ Microscope
and the answer is: ELECTRON
Word Meaning:
ELECTRON — (particle physics) The subatomic particle having a negative charge and orbiting the nucleus; the flow of electrons in a conductor constitutes electricity.
Definitions from Wiktionary.