AST 2002 Chapter Notes - Chapter 2: Umbral Calculus, Shadow Falls, Tidal Locking
Document Summary
Chapter 2 textbook notes: discovering the universe for yourself. Ast 2002: the angular size of an object is the angle it appears to span in your field of view. Hemisphere is tipped toward the sun in june and away from the sun in december, while the reverse is true for the southern hemisphere: the steeper sunlight angle makes it summer in the northern hemisphere for two reasons: The steeper angle means more concentrated sunlight, which tends to make it warmer. If you visualize what happens as earth rotates each day, you"ll see that the steeper angle also means the. 21 and is the moment when the northern hemisphere is tipped most directly toward the sun and receives the most direct sunlight: the december solstice, called the winter solstice by people in the northern hemisphere, occurs around. Ast 2002: the equator gets its most direct sunlight on the two equinoxes and its least direct sunlight on the solstices.
