A chronometer is strapped to their wrist, but subjects reported their free-fall lasted longer than the chronometer recorded.
The evolutionary chronometer is a measure of ancient origins — it cannot pick up divergence into separate breeding lines that has occurred in the past few hundred years.
The chronometer, which is merely the least imperfect time-piece man has devised, makes possible the surest and easiest method by far of ascertaining longitude.
The ship's time is then made to correspond, - that is to say, it must indicate twelve o'clock noon, - after which it is compared with an exact timepiece called a chronometer, which keeps Greenwich (English) time, and the difference enables the observer to determine the longitude.
It is true, chronometers were coming into general use, in large vessels, and I could work the time; but a chronometer was a thing never heard of on board the James.
"Excuse me, aunty, it was the barometer that he was watching - the chronometer was his watch."
The great invention of the chronometer, that is, a watch that can be trusted to keep a steady rate for long periods, was at this time completed by Harrison; but very few had been manufactured, and astronomers and sailors were slow to believe in the efficacy of this method of carrying time about with a ship.
So, he outfitted everybody with a small electronic device, called a perceptual chronometer, which is basically
So, he outfitted everybody with a small electronic device, called a perceptual chronometer, which is basically a clunky wristwatch.