error of a timepiece due to the fluctuations in density of the atmosphere through which the balance or pendulum moves.
- Barometric gradient
pressure gradient. the change in atmospheric pressure per unit of horizontal distance in the direction in which pressure changes most rapidly. Historical Examples What was the result of your work on the correlation of the velocity of the wind and the barometric gradient in Chapter X? Practical Exercises in Elementary Meteorology Robert DeCourcy Ward noun […]
- Barometric pressure
atmospheric pressure. Historical Examples During a rise of barometric pressure such wells are sometimes observed to suck. Meteorology Charles Fitzhugh Talman Thirteen cubic feet of free air at normal temperature and barometric pressure weigh about one pound. Scientific American Supplement, No. 799, April 25, 1891 Various The results obtained as to the relation between dissipation […]
- Barometric switch
baroswitch. a switch actuated by barometric pressure.
the process of measuring atmospheric pressure. Historical Examples Later, he experimented in barometry, and pursued investigations in mechanics. Classic French Course in English William Cleaver Wilkinson Later he experimented in barometry, and pursued investigations in mechanics. French Classics William Cleaver Wilkinson