NATS 1740 Study Guide - Final Guide: Photon, Emission Spectrum, Ecliptic
16 Dec 2014
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NATS 1740 Full Course Notes
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Chapter 2 discovering the universe for yourself. Latitude determines the orientation of your horizon relative to celestial sphere: sky doesn"t vary with longitude. 2. 3 moon, our constant companion: phases of the moon depend on its position relative to the sun as it orbits earth, half of moon facing the sun always illuminated while other half is dark. 3. 3- copernican revolution: copernicus created a sun-centered model of solar system designed to replace. Ptolemaic model, but it was no more accurate than ptolemys accurate, naked-eye observations provided the data needed to improve on. Copernican idea of earth as a planet orbiting the sun: galileo sealed the case for sun-centered solar system. 4. 4 force of gravity: universal law of gravitation states that every object attracts every other object with gravitational force that directly proportional to product of objects masses and declines with the square of distance between their centers:
