vacuum diffusion pump
21Rotary compression — A rotary compression pump works in cycles. Over each cycle a volume is created in contact with the cavity where pressure is to be lowered. By random motion, molecules from the vacuum pass into the volume created by the pump. This volume is then… …
22Foreline — In a multistage vacuum system, the vacuum line between the roughing pump and the high vacuum pumps is called the foreline. Vacuum systems are no longer exclusively used by scientists in research. They are used in numerous industries that range… …
23Injector — An injector, ejector, steam ejector or steam injector is a pump like device that uses the Venturi effect of a converging diverging nozzle to convert the pressure energy of a motive fluid to velocity energy which creates a low pressure zone that… …
24mass spectrometry — or mass spectroscopy Analytic technique by which chemical substances are identified by sorting gaseous ions by mass using electric and magnetic fields. A mass spectrometer uses electrical means to detect the sorted ions, while a mass spectrograph …
25Electron beam welding — (EBW) is a fusion welding process in which a beam of high velocity electrons is applied to the materials being joined. The workpieces melt as the kinetic energy of the electrons is transformed into heat upon impact, and the filler metal, if used …
26Irving Langmuir — Infobox Scientist name = Irving Langmuir image size = 180px birth date = birth date|1881|1|31 birth place = Brooklyn, New York death date = death date and age|1957|8|16|1881|1|31 death place = Woods Hole, Massachusetts nationality = United States …
27Glossary of fuel cell terms — The Glossary of fuel cell terms lists the definitions of many terms used within the fuel cell industry. The terms in this glossary may be used by fuel cell industry associations, in education material and fuel cell codes and standards to name but …
28Crystallization — Crystallizing and Crystallized redirect here. For the action adventure video game, see Crystalis. For the 2009 song by The xx, see Crystalised. For other uses, see Crystallization (disambiguation). Crystallization …
29circulation — circulable /serr kyeuh leuh beuhl/, adj. /serr kyeuh lay sheuhn/, n. 1. an act or instance of circulating, moving in a circle or circuit, or flowing. 2. the continuous movement of blood through the heart and blood vessels, which is maintained… …
30AFR sensor — Articleissues cleanup=August 2008 wikify=August 2008 copyedit=August 2008 inappropriate tone=August 2008 jargon=August 2008 orphan=August 2008The AFR is a new type of Oxygen Sensor that is slowly replacing the Zirconium O2 sensor in modern… …
