| Last: 2. The Sky Around Us | Next: 4. Revolution of the Spheres |
Topics:
Reading:
| Ch. 1-13 | Eclipses occur only when the Moon crosses the ecliptic during the new or full phase |
| Ch. 1-14 | There are three types of lunar eclipse |
| Ch. 1-15 | There are also three types of solar eclipse |
| Ch. 3 | Gravitation and the Waltz of the Planets (p. 55) |
| Ch. 3 | ORIGINS OF A SUN-CENTERED UNIVERSE (p. 56) |
Web Resources:
A resource center for archaeoastronomy (astronomy in ancient times) and ethnoastronomy (astronomy in different cultures).
Learn about traditional and modern techniques for navigating without instruments.
Extensive on-line data on past and future eclipses.
Photographs of the August 11, 1999 Solar Eclipse.
Photographs of the July 16, 2000 Lunar Eclipse. See this eclipse montage [source].
Interactive demonstration of eclipse geometry, created by Rob Scharein at UBC.
Description of Eratosthenes' measurement of the size of the Earth, and a student project to repeat his measurement. See this world map [source].
Homework 3: Angular Size Of The Sun, due 9/18.
Quiz 3: Eclipses, given 9/13.
Last modified: September 13, 2001
http://www.ifa.hawaii.edu/~barnes/ast110/aa.html
