Petahertz definitions

Petahertz

1) One quadrillion hertz
Found on https://www.crosswordclues.com/clue/petahertz

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Petahertz

1) Phz
Found on https://www.crosswordclues.com/clue/petahertz

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petahertz

petahertz (Ph) One quadrillion hertz (1015).
Found on http://www.wordinfo.info/words/index/info/view_unit/1616/

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