L10 - ii Neap Spring Tides III Telescopes and Light a...

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I. History of Astronomy a. Geocentric i. Aristotle – “Heavenly Spheres” ii. Ptolemy – Complete model lasted ~1,500 years b. Heliocentric i. Copernicus – first to push heliocentric ii. Tycho – observations iii. Kepler – 3 planetary laws iv. Galileo – Moons of Jupiter v. Newton – physical laws and gravity II. Kepler’s Laws / Newton’s Law of Gravity a. Kepler’s Laws i. Planets go in ellipses (not circles) ii. Equal areas in equal times – planets travel faster when closer to Sun iii. p 2 = a 3 b. Newton’s Law of Gravity i. Surface Gravity – the acceleration you feel on the surface of a planet due to its gravitational force
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Unformatted text preview: ii. Neap / Spring Tides III. Telescopes and Light a. Refractor – lens, smaller, blurriness b. Reflector – mirrors, bigger, diffraction patterns/spikes c. (Angular) Resolution – depends on diameter d. Light Gathering Power – depends on diameter 2 e. λ (wavelength) * f (frequency) = c (speed of light) f. E (energy of photon) = h (constant) * f (frequency) g. (Increasing Energy and Decreasing Frequency) Gamma X-Rays UV optical IR Radio h. Nasa’s 4 Great Observatories...
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This note was uploaded on 02/17/2010 for the course PHY 115 taught by Professor Weinbeck during the Spring '09 term at BC.

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