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Article #22062Vacuum Terminology
From: smlg1015
Date: Sun, 28 Jan 1990 17:15
Date: Sun, 28 Jan 1990 17:15
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798 bytes
Dear sci.electronics: Can somebody familiar with vacuum technology tell me to what the terms, "high vacuum","ultra high vacuum", and "super high vacuum" correspond? In particular, 10E-7 particles per cm3 corresponds to which category? This is said to be the density of an interstellar dust cloud. What's the best that can be achieved in the lab? Thanks, smlg1015@uxa.cso.uiuc.edu
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!iuvax!ux1.cso.uiuc.edu!ux1.cso.uiuc.edu!uxa.cso.uiuc.edu!smlg1015 From: smlg1015@uxa.cso.uiuc.edu Newsgroups: sci.electronics Subject: Vacuum Terminology Message-ID: <108800006@uxa.cso.uiuc.edu> Date: 28 Jan 90 17:15:00 GMT Lines: 13 Nf-ID: #N:uxa.cso.uiuc.edu:108800006:000:387 Nf-From: uxa.cso.uiuc.edu!smlg1015 Jan 28 11:15:00 1990