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Phenomenon by which electrons radiate from a heated filament, so named for a famous observer Crossword Clue

4 letters · New York Times · Sunday, May 16, 2021 · 57-Down

Appeared in 1 New York Times Crossword: Sunday, May 16, 2021.

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Phenomenon by which electrons radiate from a heated filament, so named for a… Crossword Clue (4 Letters) | CrosswordAlly