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7 ideas Sep 8th Phy 11030

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these notes cover chapter 5 including coordinates of the sky
COURSE
7 ideas that shook the universe
PROF.
John M. Barrick
TYPE
Class Notes
PAGES
2
WORDS
CONCEPTS
Physics
KARMA
25 ?

Popular in PHYSICS (PHY)

This 2 page Class Notes was uploaded by Ahmad Notetaker on Wednesday October 12, 2016. The Class Notes belongs to Phy 11030 at 1 MDSS-SGSLM-Langley AFB Advanced Education in General Dentistry 12 Months taught by John M. Barrick in Fall 2016. Since its upload, it has received 3 views. For similar materials see 7 ideas that shook the universe in PHYSICS (PHY) at 1 MDSS-SGSLM-Langley AFB Advanced Education in General Dentistry 12 Months.

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Date Created: 10/12/16
Thursday, September 8, 2016 7 Ideas 4th lecture Chapter 5 - Coordinates of the Sky *2 Coordinate system:- 1) Observer’s sky (local) 2) Celestial Sphere *Observer’s Sky:- 1) Azimuth (heading) tells which direction to look 1. -North 0deg 3. East 90deg 2. South 180deg 4. West 270deg 2) Altitude tells how high to look:- 1. 0deg even with ground 2. 90deg overhead Azimuth Altitude Object 200deg 30deg Jupiter 90deg 90deg Vega *3 Problems with the observer’s sky 1) Works for your location (time difference) 2) Motion of the Earth around the sun 3) Objects move *Geocentric Theory - Geo means Earth — Centric means Center - First suggested by Aristotle c 350 BC - Incorrect theory, but useful in learning a more complex coordinate system of the sky 1 Thursday, September 8, 2016 *2 Rules pertaining to Polaris 1) The altitude of Polaris = Your latitude on Earth 2) As the Earth rotates once each day. Polaris does not appear to move in the sky. But stars, the sun, planets etc. appear to make circles around Polaris once each day. *Circumpolar stars:- Never rise OR set. (non existent on Equator) *Declination Lines (lines of latitude) goes through Earth *Zodiac :- are the 12 constellations that the Sun moves through *Ecliptic :- the path that the Sun follows *Vernal Equinox (1st day of Spring) 2

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