Talk:Waveguide flange

Did you know...
... that we got 2187 hits? Less than amazing but clearly ahead of the other six DYK articles competing for attention - and that with being third on the list and not getting the picture. --catslash (talk) 02:21, 3 December 2010 (UTC)

History
The choke flange is a clever idea. It would be interesting to know who thought of it. Old Aylesburian (talk) 10:19, 2 December 2010 (UTC)
 * I was unable to discover this previously, but you've prompted me to take another look and I've found Oral-History:Norman Ramsey (1995) - GHN: IEEE Global History Network. I shall study it later, when I'm not at work. --catslash (talk) 14:00, 2 December 2010 (UTC)
 * Norman Ramsey previously claimed this invention in Oral-History:Norman Ramsey (1991) - GHN: IEEE Global History Network. It is claimed that the invention was made at the MIT Rad Lab during the war. However Winfield W. Salisbury reckons that it was his idea - also at MIT Rad Lab between 1941 and 1942. --catslash (talk) 21:32, 2 December 2010 (UTC)
 * These claims are now mentioned in the article. --catslash (talk) 01:53, 3 December 2010 (UTC)

Pressurization
This is slightly off-topic; discussion of pressurization probably belongs on the waveguide (electromagnetism) page. However, as I've just reverted an edit, I'll expand on my reasons. As a quick trawl of the web will convince you, pressurization of waveguides is nor restricted to outer space. High-power ground-based systems such as radar feeds are often pressurized. In the past an atmosphere of sulphur hexafluoride was used, but I'm not sure if this is still allowed. Also low-power outdoor installations are are often (slightly) pressurized with dry air to prevent the ingress of moisture (as was recently pointed out by 98.81.3.202 (talk)). Also pressurization is used in airborne systems. I may amend the text here, to mention exclusion of moisture. --catslash (talk) 22:43, 18 April 2012 (UTC)