01:750:109 Lecture Notes - Lecture 5: Precession
19 Oct 2018
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Document Summary
Sun rises in east, sets in the west. Summer solstice - sun rises northeast, sets northwest. Winter solstice - sun rises southeast, set southwest. Equinox - sets rises exactly east and sets exactly west. New jersey - see sun in the south at noon. South pole - looking at things upside down with respect to us. Rotate together, but poles are opposite to each other. January - sun low in the sky (north pole it would be below the horizon) Southern hemisphere - sun below horizon during summer months. Hawaii - southern most state (just inside of tropics, can see sun at zenith on one day. Earth"s rotation axis tilted with respect to its orbit (angle is -23. 5 degrees). Axis of rotation points in same direction relative to the room/stars. Axis points to a fixed direction in space (polaris, north star) Orientation of axis relative to sun changes over the year. Northern hemisphere tipped towards(away) sun in june(december)
