Thin-film tech makes nuclear clocks a 1,000 times less radioactive and more affordable
In the quest for ultra-precise timekeeping, scientists have turned to nuclear clocks. Unlike optical atomic clocks—which rely ...
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Shutdown Grows Closer as Trump Tells G.O.P. to Kill Spending Deal The bill Republicans and Democrats agreed on is in jeopardy after President-elect Trump condemned it three days before the ...