ORIGINAL MESSAGE:
On Mon, 27 Aug 2012 20:20:38 -0700 (PDT), Robert wrote:
>I bought one on Ebay for under $30 or so - a gun type device with an LED for
>aiming. Take a look on eBay for item #110937511368.
REPLY:
Those things are great. I use one in the kitchen for cooking all the time.
If you want an interesting lesson in physics, go outdoors on a nice warm day and
point it straight up. You'd expect to read the local air temp, but not so.
You'll get a reading well below zero. You're reading the average temp of all the
air above you and maybe even a bit of outer space. Cool. (pun intended)
73, Bill W6WRT
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