- vacuum lamps
- • вакуумна лампа
English-Bulgarian polytechnical dictionary . 2013.
vacuum lamps
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Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… … Wikipedia
Vacuum pump — A vacuum pump is a device that removes gas molecules from a sealed volume in order to leave behind a partial vacuum. The vacuum pump was invented in 1650 by Otto von Guericke. Types Pumps can be broadly categorized according to three… … Wikipedia
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lamp — lampless, adj. /lamp/, n. 1. any of various devices furnishing artificial light, as by electricity or gas. Cf. fluorescent lamp, incandescent lamp. 2. a container for an inflammable liquid, as oil, which is burned at a wick as a means of… … Universalium
Heraeus — Infobox Company company name = Heraeus Holding GmbH company type = Gesellschaft mit beschränkter Haftung/ Private foundation = 1851 location city = Hanau location country = Germany key people = Wilhelm Carl Heraeus, Founder Dr. Jürgen Heraeus,… … Wikipedia
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