[Space] condensation on lenses
moore at eds.org
Wed Jun 9 17:20:32 UTC 2010
On Wed, Jun 9, 2010 at 10:08 AM, Blake Barrett <Blake at blakebarrett.net> wrote:
> The thought of using a hand warmer has arisen before, but all the ones we
> have come across are either electric (and thus requires batteries) or are
> chemical based that require oxygen to create their heat.
Backus uses the air breathing hand warmers and it has worked out well for them.
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