chronometry
Precision timekeeping science
Chronometry is the science or practice of precise timekeeping.
The term appears in technical contexts involving the measurement of time intervals or the design of accurate timepieces: The observatory's chronometry division calibrates atomic clocks.
A chronometer is a highly accurate clock, especially one used in navigation.
Measuring duration's passage
- time measurementQuantifying duration and sequence
- time intervalBounded stretch of duration
- durationLength of existence
- elapsed timeTime that has passed
timing · calibration · epoch · timestamp · time code · time signal · precision timing
Instruments displaying hours
- watchesPortable personal clocks
- timepiecesInstruments measuring elapsed duration
- escapementTick-controlling clock component
- pendulumSuspended swinging weight
balance wheel · watchmaker · horologist · mainspring · complication · regulator · sundial · water clock
Interval timing device
- timerDuration-tracking mechanism
- metronomeAdjustable beat-marking device
- tachometerRotational speed indicator
- interval timerDevice timing repeated periods
lap timer · atomic clock · digital timer · analog clock · master clock
Degree of correctness
- nanosecondsBillionths of seconds
- microsecondsMillion per second
- millisecondsThousandths of a second
- cesiumAlkali metal, number fifty-five
atomic · quartz · stability · oscillator · frequency · periodicity · regularity · drift
Measuring celestial body positions
- photometryMeasuring light intensity
- spectrometryMeasuring radiation to identify substances
- calorimetryMeasuring heat in reactions
- dosimetryRadiation absorption measurement
gravimetry · thermometry · barometry · bathymetry · telemetry · interferometry · refractometry
timekeeping
Measuring duration's passage
- time measurementQuantifying duration and sequence
- time intervalBounded stretch of duration
- durationLength of existence
elapsed time · timing · calibration · epoch · timestamp · time code · time signal · precision timing
clocks
Instruments displaying hours
- watchesPortable personal clocks
- timepiecesInstruments measuring elapsed duration
- escapementTick-controlling clock component
pendulum · balance wheel · watchmaker · horologist · mainspring · complication · regulator · sundial · water clock · atomic clock
stopwatch
Interval timing device
- timerDuration-tracking mechanism
- metronomeAdjustable beat-marking device
- tachometerRotational speed indicator
interval timer · lap timer · atomic clock · digital timer · analog clock · master clock
accuracy
Degree of correctness
- nanosecondsBillionths of seconds
- microsecondsMillion per second
- millisecondsThousandths of a second
cesium · atomic · quartz · stability · oscillator · frequency · periodicity · regularity · drift · tolerance
astrometry
Measuring celestial body positions
- photometryMeasuring light intensity
- spectrometryMeasuring radiation to identify substances
- calorimetryMeasuring heat in reactions
dosimetry · gravimetry · thermometry · barometry · bathymetry · telemetry · interferometry · refractometry
chronometryimprecision
Lack of exactness
inexactitude · approximation · guesswork · vagueness · timelessness
chronometryatemporality
Absence of time
geometry · cartography · geodesy · timelessness · time perception
- marine chronometerPrecise nautical timekeeping instrument