Crossword clue: the unit of frequency; one hertz has a periodic interval of one second (named for heinrich rudolph hertz)

The most common answer is cps (3 letters).

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

Possible answers

cps 3 letters wn-def

the unit of frequency; one hertz has a periodic interval of one second (named for Heinrich Rudolph Hertz)

hz 2 letters wn-def

the unit of frequency; one hertz has a periodic interval of one second (named for Heinrich Rudolph Hertz)