Lec04-Jan29

Lec04-Jan29 - 1/27/10 Key Concepts •  how we see...

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Unformatted text preview: 1/27/10 Key Concepts •  how we see the Moon Astro 109 Lecture 4: Learning from the Sun and Moon •  eclipses •  the ancient Greeks were clever Jan. 29 Jan. 29 Phases of the Moon Jan. 29 Jan. 29 Jan. 29 Jan. 29 1 1/27/10 Jan. 29 Jan. 29 Jan. 29 Jan. 29 Solar Eclipse sidereal month = 27.32 d Jan. 29 synodic month = 29.53 d Jan. 29 2 1/27/10 Taken from Mir space staNon, Aug. 11, 1999 Jan. 29 Jan. 29 Jan. 29 Jan. 29 Lunar Eclipse Jan. 29 Jan. 29 3 1/27/10 Those clever Greeks… Jan. 29 Jan. 29 ★ They knew Earth is round Eratosthenes and the size of Earth •  Shape of shadow during lunar eclipse •  Sky varies with laNtude •  Ships disappear over the horizon Jan. 29 Jan. 29 Aristarchus and the scale of the solar system Jan. 29 Jan. 29 4 ...
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This note was uploaded on 09/15/2011 for the course PHYS 109 taught by Professor Pryor during the Spring '09 term at Rutgers.

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