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Tuesday, December 03, 2002 |
News - I got out and observed the sky (briefly) last night for the first
time in several weeks.
Comment - Zowie, it was cold! It had a significant effect on the performance
of my telescope. I should have let my scope sit in the garage for a couple
hours so it could reach thermal equilibrium with the outside temperature.
Instead, I took it out to the driveway on the spur-of-the-moment. I went
from 70 degrees inside to zero outside! That was way too much of a
difference for the scope to be able to adapt and give me a good optical
performance. I took my first looks with this scope at the Orion Nebula
(http://www.seds.org/messier/m/m042.html) and Saturn
(http://seds.lpl.arizona.edu/nineplanets/nineplanets/saturn.html), but it
was like looking through the bottom of a glass of water.
News - Undersea explorers say Nazi super-battleship Bismarck was scuttled by
its crew, not sunk by gunfire:
http://www.nytimes.com/2002/12/03/science/03BISM.html
Comment - This will be the subject of a TV special on Sunday. I don't see
what difference it makes, whether it was destroyed by British warships or
forced to be sunk. The important thing at the time is that it was destroyed.
There were only 115 survivors out of the crew of 2,200.
I've read in history books that one of Hitler's many military mistakes is
that he wasted money and resources on showy ships like the Bismarck, when
building more submarines would have been much more effective for the war
effort in the long run.
I also read that during the battle with the Bismarck, one of the British
battleships fired so many shells that it was in danger of literally shaking
itself to pieces.
11:41:10 AM
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© Copyright 2003 Michael Rogers.
Last update: 1/6/03; 1:22:01 PM.
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