Talk:BOOMERanG experiment

Instrumentation

How were the bolometers kept so cold?

Thanks

CaptinJohn (talk) 12:52, 26 November 2007 (UTC)

• with Helium under small pressure, see Evaporative cooling {{{Sheliak (talk) 13:09, 26 November 2007 (UTC)}}}

Thanks!!

CaptinJohn (talk) 11:53, 27 November 2007 (UTC)