day_19 - October 18, 2010 Exam 3 This Friday, October 22....

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Unformatted text preview: October 18, 2010 Exam 3 This Friday, October 22. Review Sheet posted today. Review Thursday, 5 6 PM room TBD Reading Chapter 7, Chapter 8 - Sections 8.1, 8.2, 8.5, 8.6, 8.10, Chapter 9: 9.1 9.5.1 Astronomy in the News? Betelgeuse still has not blown up. Pic of the Day Solar prominance Add to Sky Watch New Soft Gamma-ray repeater outburst, March 2010, SGR 1833--0832, in direction of Sagittarius, center of Milky Way, is a magnetar with a pulsar spin period of 7.56 seconds. Recurrent Nova outburst, V407 Cygni, Frst ever seen in a binary system with a Red Giant and White Dwarf. Possible precursor to a Type Ia supernova. Goals: To understand how Einstein taught us to think about space, time, and gravity. To understand what we mean by space. To understand how space can be curved. Gravity Still a deep mystery. Objects of different mass fall with the same acceleration. Explore how Einstein taught us to think about gravity: no f orce of gravity , but the effect of curved space . Straight line on a curved surface, possible or an oxymoron? Euclidian - Flat Space Geometry // C=2 r =180 never cross Answers only good in fat space : operational defnition o at space NOT necessarily two-dimensional!...
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day_19 - October 18, 2010 Exam 3 This Friday, October 22....

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