Torricellianadj.
/tɒrɪˈtʃɛlɪən//tɒrɪˈsɛlɪən/ Of or belonging to Torricelli. Torricellian experiment, that by which, in 1643, Torricelli proved that the column of mercury in an inverted closed tube is supported by the pressure of the atmosphere on the mercury in the vessel, and that the height of the column corresponds exactly to the atmospheric pressure. Torricellian tube, early name for the tube of the mercurial barometer. Torricellian vacuum, the vacuum above the mercurial column in the barometer, produced by filling the tube with mercury and then inverting it in a cup of mercury.
ΘΚΠ
the world > matter > gas > air > [noun] > air-pressure > device for illustrating
Torricellian tube1660
Magdeburg hemispheres1815
bladder-glass1854
the world > the earth > weather and the atmosphere > weather > study or science of weather > meteorological instruments > [adjective] > relating to barometer
Torricellian1660
barometrical1665
baroscopical1666
barometric1804
the world > matter > gas > air > [noun] > air-pressure > device for illustrating > specific experiment using
Torricellian experiment1660
the world > matter > gas > air > [noun] > air-pressure > vacuum > above mercury in barometer
Torricellian vacuum1753
1660 R. Boyle New Exper. Physico-mechanicall xvii. 123 We are unwilling to examine any further the Inferences wont to be made from the Torricellian Experiment.
1663 R. Boyle Some Considerations Usefulnesse Exper. Nat. Philos. i. iv. 69 Nor did it appear that by repeated Suctions..it could at all be rais'd above the seven and twenty Digits at which it us'd to subsist in the Torrecellian Experiment De Vacuo.
a1680 S. Butler Genuine Remains (1759) I. 162 Or measuring of Air upon Parnassus With Cylinders of Torricellian Glasses.
1682 H. More Annot. Lux Orientalis 130 in Two Choice & Useful Treat. The Quicksilver in a Torricellian Tube will sink deeper in an higher or clearer Air.
1753 Philos. Trans. 1751–2 (Royal Soc.) 47 371 The Torricellian vacuum then occupied a space of about thirty inches.
1812 H. Davy Elements Chem. Philos. 97 Even the best Torricellian vacuum must contain elastic matter.
1812 J. Playfair Outl. Nat. Philos. I. 235 The weight of air is known from the Torricellian experiment, or that of the barometer.
1835 Penny Cycl. III. 483/2 It is a Torricellian barometer.
This entry has not yet been fully updated (first published 1913; most recently modified version published online December 2020).
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