The First Particle __ Was Invented in 1911
This page is the CodyCross answer for the clue below from Inventions, Group 55, Puzzle 1.
Question is: The First Particle __ Was Invented in 1911
and the answer is: DETECTOR
Word Meaning:
DETECTOR — A device capable of registering a specific substance or physical phenomenon, and that optionally sounds an alarm or triggers a warning.
Definitions from Wiktionary.