Street-Fighting Physics! - Professor Kevin Kimball, BS, U.S.N.- retired
Galileo's Sketches -
 and sketching your observations:
 
You may want to invest in a cheap clipboard - makes life easier.
 
PENCILS (!!!) - lose the pens!
 
(This is not about turning this course into Drawing 101!) That said, drawing is
not so much about precise hand movement as much as it is
training your eyes to really see more precicely that which is before you
In cheap, sloppy language, it's in your eyes, not your hands.
 
Note Galileo's sketches below. These are not artistic masterpieces -
 and they're not supposed to be - but they do accurately convey the observed data.
 
Ultimately, the idea here is for you to walk in Galileo's footsteps, but don't forget
the most important piece: This is supposed to be fun, too!
 
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Galileo's sketches showing the movement of Jupiter's moons.
Note the numbering.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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Another drawing of Jupiter and moons
 
 
 
 
 
 
 
 
 
 
 
 
 
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Galileo's sketches of the moon.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Compared to modern photos:
 
 
Not bad, huh?
Yup, Galileo's sketches took a lot of time and patience -
that's why they're so damned good! (Hint, hint!)
 
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A simple drawing of the Pleiades - an easy-to-find constellation. Note how Galileo indicates the major stars by drawing them larger. Also, this shows how we began to understand how many more stars were visible through a telescope than with the unaided eye because of the light-gathering capabilities of the "objective lens."
 
 
For comparison, here are modern photos of the same stars.
 
Ol' Galileo done pretty good, didn't he?
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Same constellation with individual stars named:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Just for fun:
Astronomer/artist Chesley Bonestell's famous painting of Pleione, flattened because of extreme rotation speed.
 
 
 
 
 
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