On 5/8/2017 5:42 PM, MJC wrote:
In article , says...
I've used it for any number of things including measuring the
temperature of the sky which can be so low the unit doesn't read a
number at all. Now that's cold!
Google "cosmic microwave background"...
Hard to measure that with a thermal sensor. Too much air in the way.
But on a clear night you get an average of sorts of the various layers
of atmosphere and outer space.
That's a funny name, "outer space". We seem to have found names for all
the atmosphere layers, I wonder why we didn't find a more formal name
for outer space.
--
Rick C