geology lecture#2.doc

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19 Mar 2012
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lecture #2
what are 2 aspects of doing science?
-come up with a hypothesis(question you can test)
-prove or disprove the hypothesis
what was the “cosmic hypothesis” and why did geophysicists give it up?
-because they disproved it was wrong(magnetic field should decrease was disproved)
-geodynamo seemed to be the correct hypothesis
1st of the 5controversies:
Middle ages
-minerals related to mystical and magical powers (used often as lucky charms to ward
off evil spirits)
end of the middle ages(renonsonse)
-universities were founded
-1000yrs ago (1088 bologna,paris)
time when universities were NOT linked t church. Independent of church and state
-printing:
could buy a book...key was that it was(easy to reproduce the book)
museums:
-stuffed animal kingdom,mineral cabinets,herbarium(3 kingdoms of nature)
The person of the renonsense
Leonardo da vinici---produced mona lisa
-not so much art available but more than 50000 sheets of his thoughts
-notebook was written backwards(possibly left handed, or just brilliant)
-interested in canals, drying of marshes, argues that...
-fascinated with nature...paintings are like a photography (good at observing).
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