9:15:09 Tides and Beginning Light

9:15:09 Tides and Beginning Light - TidesandBeginningLight...

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Tides and Beginning Light 15/09/2009 07:39:00 Tides Since gravitational force decreases with (distance) 2 , the Moon’s pull on Earth  is strongest on the side facing the Moon, and weakest on the opposite side The earth gets stretched alone the Earth-Moon line The oceans rise relative to land at these points Gravity is important because it determines how objects move in the universe,  from the orbits of planets in the solar system, to the motions of stars moving in galaxies  on each other. Light is the other major physical phenomenon we need to understand to learn  about the universe, because it is what we “see”. “Light” is how we get information about  the universe. Light as a Wave Wavelength – distance between successive crests For light, we move at speed of light “c” Frequency – rate at which crests pass a stationary observer
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This note was uploaded on 10/17/2011 for the course ISP 205 taught by Professor Donahue during the Fall '08 term at Michigan State University.

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9:15:09 Tides and Beginning Light - TidesandBeginningLight...

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