View source for Talk:12.4.4 Vacuum Technology

Pascal (Symbol Pa)

Jean-Fran?***?*?**??****?*??***?*?**?**?*??ois GAL?***?*?**??***?*?***?*??***?*?**?**?*****
02-28-2004 12:15 PM ET (US)

1 Pa = 1 newton per square meter
The numbers given (conversion in different units) do not agree with the data found elsewere , see for example
[http://www.npl.co.uk/pressure/faqs/convnaccy.html]

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Gauges

Jean-Fran?***?*?**??****?*??***?*?**?**?*??ois GAL?***?*?**??***?*?***?*??***?*?**?**?*****
02-28-2004 12:27 PM ET (US)

Cold-cathode gauges (penning), absolute gauges used for calibration

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Bayard-Alpert Gauge

Jean-Fran?***?*?**??****?*??***?*?**?**?*??ois GAL?***?*?**??***?*?***?*??***?*?**?**?*****
02-28-2004 12:22 PM ET (US)

May be added :
Its sensitivity depends on the nature of the gas, in particular its ionization cross section.