(A ball-drop technician in New York watches a GPS time-signal, then punches a button. So to the technicians in Boulder, and their broadcast outlet in Fort Collins, that Times Square ball is the equivalent of a cave person tracking the sun’s passage with a stick. How does that work? By measuring the movement of super-chilled ytterbium atoms through a laser grid, naturally. That’s how accurate NIST’s new ytterbium clock is, which they introduced at the end of November. Unlikely philanthropists crossword clue report this adDisclaimerĪll intellectual property rights in and to Crosswords are owned by The Crossword's Publisher.Having met Burrus and his NIST colleagues in Boulder and Fort Collins, I personally prefer to have my time accurate down to 10 to the -19th power: a decimal point followed by eighteen zeroes until you get to the error part - about a billionth of a billionth of a second.Pastry served with afternoon tea crossword clue.What kosher seafood has that nonkosher seafood does not crossword clue.Exclamation at the end of a trip? crossword clue.Dogs with standard, medium and miniature varieties crossword clue. Garland made with flowers crossword clue.Daytime television drama crossword clue.Respected community leader crossword clue.Kitchen gadget for the health-conscious crossword clue.Teacher's responsibility crossword clue.Result of iron deficiency crossword clue.Oscar-winning Washington crossword clue.Cocktail made with whiskey, honey and lemon crossword clue.Sinclair who wrote "Oil!" crossword clue.Romantic prospect after swiping right crossword clue.Letters on a car's gearshift crossword clue.Chaney of old horror films crossword clue.Group of cable news talking heads crossword clue.Suffragist Elizabeth Cady _ crossword clue.Wings, nachos and mozzarella sticks, informally crossword clue.
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