How Many Seconds in 19 Hours?

Direct Answer • Key Takeaway

“9,192,631,770 Periods of the Radiation Corresponding to the Transition Between Two Hyperfine Levels of Ground State of Cesium 133 Atom” Is Today’s Definition of One Second. “

James H. Sterling

James H. Sterling

Environmental Science & Climate Journalist

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.

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