You searched for: “vacuum
vacuum (s); vacua, vacuums (pl) ; vacuuming, vacuumed
1. Absence of matter; a space empty of matter or relatively empty of matter.
2. A space in which the pressure is significantly lower than atmospheric pressure.
3. A state of emptiness; a void.
4. A state of being sealed off from external or environmental influences; isolation.
5. Relating to, or used to create a vacuum.
6. Containing air or other gas at a reduced pressure.
7. Operating by means of suction or by maintaining a partial vacuum.
8. To use a vacuum cleaner on; clean with a vacuum cleaner: to vacuum rugs.
9. To treat with any vacuum device; such as, a vacuum drier.
This entry is located in the following unit: vacu- (page 3)
Word Entries containing the term: “vacuum
electron vacuum gage
A tool used to measure a vacuum with the ionization effect that an electron flow (from an incandescent filament to a charged grid) has on gas molecules.
This entry is located in the following unit: electro-, electr-, electri- (page 54)
electronic voltmeter, vacuum-tube voltmeter
1. The voltmeter whose sensitivity is increased by amplification.
2. A voltmeter that uses the rectifying and amplifying properties of electron devices and their associated circuits to secure desired characteristics; such as, high-input impedance, wide-frequency range, crest indications, peak-to-peak indications, and so on.

It is called a "vacuum-tube voltmeter" when its electron devices are vacuum tubes.

This entry is located in the following unit: electro-, electr-, electri- (page 71)
exhausting ventilation, vacuum ventilation
The removal of used or foul air from a room, or building, by means of a fan or other mechanical process, as seen in certain dangerous or noxious trade processes.
This entry is located in the following unit: vent- (page 1)
ion gauge, ionization gauge, ionization vacuum gauge
1. A device that determines the degree of vacuum in an electron tube by measuring the amount of ionization current in the tube.
2. A device; such as, a Geiger counter, that determines the amount of radiation in a medium by measuring the ionization generated by charged particles passing through a gaseous substance.
This entry is located in the following unit: ion, ion- + (page 2)
vacuum-tube electrometer
An electrometer is a device that uses, as an amplifier, a vacuum tube having a very high input impedance which is the measure of the opposition that an electrical circuit presents to the passage of an electric current when a voltage is applied.
This entry is located in the following unit: electro-, electr-, electri- (page 102)
Word Entries at Get Words: “vacuum
vacuum
In theory, space that contains no matter.
This entry is located in the following unit: Astronomy and related astronomical terms (page 27)
Word Entries at Get Words containing the term: “vacuum
vacuum evaporation
The deposition of thin films of semiconductor material by the evaporation of elemental sources in a vacuum.
This entry is located in the following unit: Photovoltaic Conversion Efficiency Terms + (page 23)
vacuum zero
The energy of an electron at rest in empty space; used as a reference level in energy band diagrams.
This entry is located in the following unit: Photovoltaic Conversion Efficiency Terms + (page 23)