What does diffusion pump mean?
Definitions for diffusion pump
dif·fu·sion pump
This dictionary definitions page includes all the possible meanings, example usage and translations of the word diffusion pump.
Princeton's WordNet
condensation pump, diffusion pumpnoun
vacuum pump used to obtain a high vacuum
Wikipedia
Diffusion pump
Diffusion pumps use a high speed jet of vapor to direct gas molecules in the pump throat down into the bottom of the pump and out the exhaust. They were the first type of high vacuum pumps operating in the regime of free molecular flow, where the movement of the gas molecules can be better understood as diffusion than by conventional fluid dynamics. Invented in 1915 by Wolfgang Gaede, he named it a diffusion pump since his design was based on the finding that gas cannot diffuse against the vapor stream, but will be carried with it to the exhaust. However, the principle of operation might be more precisely described as gas-jet pump, since diffusion plays a role also in other high vacuum pumps. In modern textbooks, the diffusion pump is categorized as a momentum transfer pump. The diffusion pump is widely used in both industrial and research applications. Most modern diffusion pumps use silicone oil or polyphenyl ethers as the working fluid.
ChatGPT
diffusion pump
A diffusion pump is a type of vacuum pump that uses a high-speed jet of vapor to direct gas molecules in the pump from the inlet towards the exhaust, effectively creating a vacuum. It operates on the principle of molecular diffusion, where molecules move from an area of high concentration to an area of low concentration. It is commonly used in applications requiring very high vacuum levels such as electron microscopy and vacuum coating.
Wikidata
Diffusion pump
Diffusion pumps use a high speed jet of vapor to direct gas molecules in the pump throat down into the bottom of the pump and out the exhaust. Presented in 1915 by Wolfgang Gaede and using mercury vapor, they were the first type of high vacuum pumps operating in the regime of free molecular flow, where the movement of the gas molecules can be better understood as diffusion than by conventional fluid dynamics. Gaede used the name diffusion pump since his design was based on the finding that gas cannot diffuse against the vapor stream, but will be carried with it to the exhaust. However, the principle of operation might be more precisely described as gas-jet pump, since diffusion plays a role also in other high vacuum pumps. In modern text books, the diffusion pump is categorized as a momentum transfer pump. The diffusion pump is widely used in both industrial and research applications. Most modern diffusion pumps use silicone oil or polyphenyl ethers as the working fluid. Cecil Reginald Burch discovered the possibility of using silicone oil in 1928.
Matched Categories
Numerology
Chaldean Numerology
The numerical value of diffusion pump in Chaldean Numerology is: 6
Pythagorean Numerology
The numerical value of diffusion pump in Pythagorean Numerology is: 7
Translations for diffusion pump
From our Multilingual Translation Dictionary
- диффузионный насосRussian
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"diffusion pump." Definitions.net. STANDS4 LLC, 2025. Web. 2 Jan. 2025. <https://www.definitions.net/definition/diffusion+pump>.
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