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- Diffusion_pump abstract "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. Invented in 1915 by Wolfgang Gaede using mercury vapor, and improved by Irving Langmuir and W. Crawford, 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.".
- Diffusion_pump thumbnail M6_Diffusion_Pump.jpg?width=300.
- Diffusion_pump wikiPageExternalLink DIFFUSION_PUMP.html.
- Diffusion_pump wikiPageExternalLink EP_FeatureGuide.html.
- Diffusion_pump wikiPageID "8293".
- Diffusion_pump wikiPageRevisionID "606072131".
- Diffusion_pump hasPhotoCollection Diffusion_pump.
- Diffusion_pump subject Category:Vacuum_pumps.
- Diffusion_pump comment "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. Invented in 1915 by Wolfgang Gaede using mercury vapor, and improved by Irving Langmuir and W. Crawford, 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.".
- Diffusion_pump label "Bomba de difusão".
- Diffusion_pump label "Diffusion pump".
- Diffusion_pump label "Pompa a diffusione".
- Diffusion_pump label "Pompa dyfuzyjna".
- Diffusion_pump label "Pompe à diffusion".
- Diffusion_pump label "Öldiffusionspumpe".
- Diffusion_pump label "拡散ポンプ".
- Diffusion_pump sameAs Öldiffusionspumpe.
- Diffusion_pump sameAs Pompe_à_diffusion.
- Diffusion_pump sameAs Pompa_a_diffusione.
- Diffusion_pump sameAs 拡散ポンプ.
- Diffusion_pump sameAs Pompa_dyfuzyjna.
- Diffusion_pump sameAs Bomba_de_difusão.
- Diffusion_pump sameAs m.029nz.
- Diffusion_pump sameAs Q296893.
- Diffusion_pump sameAs Q296893.
- Diffusion_pump wasDerivedFrom Diffusion_pump?oldid=606072131.
- Diffusion_pump depiction M6_Diffusion_Pump.jpg.
- Diffusion_pump isPrimaryTopicOf Diffusion_pump.
