Quote:
Originally Posted by Ric
Blimey, -69ºc now that's cold but the viewing on a good night must be awesome.
I'll never complain about a -5ºc night again.
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Hi Ric,
I note today it reports that in the last 24 hours that the minimum at Dome A was -71.4C.
That would certainly help with mirror cool down times.
At the South Pacific Star Party in May, we had a couple of visitors from the Yukon.
I asked Kelly, who was a flight instructor, what are some of the funny and not
necessarily intuitive things that happen to materials when you live and work in
these very cold environments. He mentioned that you park your car overnight
and it gets so cold that the rubber in the tyres becomes so stiff that the flat
spot on the bottom of the tyre where it rests on the road remains flat when you
begin to drive off. The car then bumps up and down as the flat spot hits the
road - a bit like driving over continual speed bumps.
