Found 3 hits - Term: vacuum tube, Database: *, Strategy: prefix
- [1] : The Collaborative International Dictionary of English v.0.48
vacuum \vac"uum\ va^k"-uu^m, n.; pl. e. vacuums
va^k"-uu^mz, l. vacua va^k"-u.a. l., fr.
vacuus empty. see vacuous.
1. physics a space entirely devoid of matter called also,
by way of distinction, absolute vacuum; hence, in a more
general sense, a space, as the interior of a closed
vessel, which has been exhausted to a high or the highest
degree by an air pump or other artificial means; as, water
boils at a reduced temperature in a vacuum.
1913 webster
1913 webster
2. the condition of rarefaction, or reduction of pressure
below that of the atmosphere, in a vessel, as the
condenser of a steam engine, which is nearly exhausted of
air or steam, etc.; as, a vacuum of 26 inches of mercury,
or 13 pounds per square inch.
1913 webster
vacuum brake, a kind of continuous brake operated by
exhausting the air from some appliance under each car, and
so causing the pressure of the atmosphere to apply the
brakes.
vacuum pan technol., a kind of large closed metallic
retort used in sugar making for boiling down sirup. it is
so connected with an exhausting apparatus that a partial
vacuum is formed within. this allows the evaporation and
concentration to take place at a lower atmospheric
pressure and hence also at a lower temperature, which
largely obviates the danger of burning the sugar, and
shortens the process.
vacuum pump. same as pulsometer, 1.
vacuum tube phys.,
a a glass tube provided with platinum electrodes and
exhausted, for the passage of the electrical
discharge; a geissler tube.
a any tube used in electronic devices, containing a
vacuum and used to control the flow of electrons in a
circuit, as a vacuum diode, triode, tetrode, or
pentode.
vacuum valve, a safety valve opening inward to admit air to
a vessel in which the pressure is less than that of the
atmosphere, in order to prevent collapse.
torricellian vacuum. see under torricellian.
1913 webster
see also:
vacuums vacua vacuous vacuum brake vacuum pan vacuum pump
pulsometer vacuum tube vacuum valve torricellian vacuum torricellian
- [2] : WordNet (r) 2.0
vacuum tube
n : electronic device consisting of a system of electrodes
arranged in an evacuated glass or metal envelope syn: tube,
thermionic vacuum tube, thermionic tube, electron
tube, thermionic valve
see also:
tube thermionic vacuum tube thermionic tube electron tube thermionic valve
- [3] : The Free On-line Dictionary of Computing (27 SEP 03)
vacuum tube
electron tube
see also:
electron tube
Results 1 - 10 of 33 found about vacuum tube: Tube
>> T Words
Tube, definition of term: Tube
tube_pag1.html Tube Foot
>> T Words
Tube Foot, definition of term: Tube Foot
tube+foot_pag1.html Pneumatic Tube
>> P Words
Pneumatic Tube, definition of term: Pneumatic Tube
pneumatic+tube_pag1.html Pollen Tube
>> P Words
Pollen Tube, definition of term: Pollen Tube
pollen+tube_pag1.html Thermionic Tube
>> T Words
Thermionic Tube, definition of term: Thermionic Tube
thermionic+tube_pag1.html Pitot Tube
>> P Words
Pitot Tube, definition of term: Pitot Tube
pitot+tube_pag1.html Test Tube
>> T Words
Test Tube, definition of term: Test Tube
test+tube_pag1.html Picture Tube
>> P Words
Picture Tube, definition of term: Picture Tube
picture+tube_pag1.html Capillary Tube
>> C Words
Capillary Tube, definition of term: Capillary Tube
capillary+tube_pag1.html Bronchial Tube
>> B Words
Bronchial Tube, definition of term: Bronchial Tube
bronchial+tube_pag1.html
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