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Unit 3 - RobertHooke 17:03 Getnotesfrom10/31and11/2 .org ,

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Robert Hooke 17:03 Get notes from 10/31 and 11/2  Extremely productive period in his life also wore him out and took a toll on his health.  About the Hook Folio on royalsociety.org  Public for the first time—1665—Micrographia Like Galileo showed new worlds with the moon, Hooke is showing the world of the very  small His most famous work was micrographia, his work on planetary motion, and particularly  the study of geology.  In his last years he was known as being very eccentric. That made him become more  marginalized in the scientific world, and downplay his work. Something important is that  it is NOT just Isaac Newton that changed science. Many of the important ideas  associated with him were in the air, and particularly Robert Hooke was developing these  ideas. 
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Huygens, the pendulum, and motion 17:03 Neo Cartesians—people that are sort of like Descartes but not quite.  Huygens worked out diffraction (having to do with waves look on BB) He also had a lot of work dealing with optics.  Aerial telescope—using a string to attach two lenses rather than having a long tube His work in this was guided by his understanding of optical theory and skill in grinding  lenses.  His telescopes (some of the nicest in the mid 17 th  century) helped him to discover the  rings of Saturn. He knows that Saturn looks differently so much of the time because we  see it at different angles in its orbit. For a Cartesian this made sense (because they believed in vortices spinning matter  around) and for Saturn you could see the vortex.  He also discovered the largest moon of Saturn.  This made him very famous.  Pendulum clocks Galileo knew that the period of a pendulum’s swing was the same no matter the angle.  Huygens patented the pendulum clock—a more accurate version  It was seen as having great practical value. With an accurate clock you might have a  way to find your longitude at sea by comparing the time to reference point and  observations of the position of the sun, you can see how far you are east and west of  your reference point. But it turned out that the pendulum clock does not work to well on  a ship.  His work on telescopes, pendulum, and Saturn make him famous in the scientific world.  Centrifugal force—realized that different size circle=different amount of tug.  Becomes a very important useful law. The tendency to flee the center is proportional to  the mass of the body, the square of the speed, and inversely proportional to the radius. 
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Isaac Newton—Never at Rest 17:03 Great intellect and insight into scientific problems. He was an obsessive personality. 
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