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Sunday, October 29
Cost Me NuthinI don't think I would let my kid play with this. Maybe the girl who wrote this was not thinking about children?! Scary
posted by Drea Beth on 11:41 AM
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Tuesday, October 17
A little help for my family, who have no idea what I'm going to school for.or where I will ever get a job.
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Why is radio astronomy becoming more difficult?
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Radio astronomers "look" at the universe as it appears in radio
frequencies, the lowest energy form of electromagnetic waves. The
long, low-frequency waves of radio energy from space are so weak that
all the natural radio waves collected by all the radio telescopes in
the world do not contain enough energy to light a single light bulb.
Because they are collecting such weak signals, radio astronomers
throughout the world are facing a growing crisis: much stronger
signals generated by humans are drowning out the natural radio
waves. Radio signals from the ground are bad enough, but as more and
more satellites are placed in orbit radio telescopes must weed out
their noise to find the natural signals coming from much farther out.
In the short term, there is no easy solution. Eventually it may be
necessary to put radio telescopes on the far side of the moon, where
the din of human communications do not overlay the subtle radio waves
from distant galaxies.
The approaching crisis in radio astronomy:
http://info.aoc.nrao.edu/vla/interference/astbrief.htm
The first radio telescopes:
posted by Drea Beth on 8:59 PM
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Tuesday, October 3
Anthro. class has got a little better. I have a mid term this Friday. Also an exam in Environmental science on the 5th. I got the paper I wrote for english, the narritive. She gave me a "Strong B". What does that mean? Two papers due this week. A profile and a research paper. I better get writing. The weather is so weird here! 80 one day 40 the next. The Minnesota river is drying up. It's completly dry in most places in the south west. I see it every day and it doesn't get any better. Sad.posted by Drea Beth on 7:07 AM
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