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Astronomy of the Earth's motion in space: Stargazers and Skywatchers
1a. The Celestial Sphere
1b. Finding the Pole Star
2. The Path of the Sun, the Ecliptic
2a. Building a Sundial
3. Seasons of the Year
3a. The Angle of the Sun's Rays
4. The Moon: the Distant View
4a. The Moon: A Closer Look
4b. Optional: Libration of the Moon
5. Latitude and Longitude
5b. The Cross-Staff
6. The Calendar
6a. The Jewish Calendar (optional)
8. The Round Earth and Christopher Columbus
8a. Distance to the Horizon
8c. How Distant is the Moon?--1
8d. How Distant is the Moon?--2
The central role of the Sun
9a. Aristarchus: Is Earth Revolving around the Sun?
9b. The Earth's Shadow
9c. Copernicus, Galileo, and the Discovery of the Solar System
Introduction to the Discussion of Kepler's Laws
10. Kepler and his Laws
Newtonian mechanics13. The Way Things Fall
16. Newton and his Laws
17a. Mass Measurements aboard Space Station Skylab
17b. Comparing Masses without the Use of Gravity
18. Newton's Second Law
18a. Newton's Third Law
18d. Work against an Electric Force: The Van de Graaff Generator
19. Motion in a Circle
20. Newton's theory of "Universal Gravitation"
21. Kepler's Third Law
21a. Applying Kepler's Third Law
22. Frames of Reference: The Basics
S-2. Our View of the Sun
Peripheral Subjects related to section S-7 above:
(A very quick overview of the relevant history.)
S-7A The Black Hole at the Center of our Galaxy
S-8. Nuclear Power
S-9. Nuclear Weapons
Spaceflight and Spacecraft
25. The Principle of the Rocket
Afterword: "Do Frogs Exist there Too ?"
A Math RefresherHome page
Elements of algebra
(M-1) Basic ideas
Elements of trigonometry
Helpful MaterialQuestions and Answers -- Listed by subject (and oh, do we get questions!)
Questions and Answers -- Listed in the order they were received.
Hints to users.
A Glossary of Terms (Cross-linked, keyed to the text)
Annotated Timeline (Chronology with links and added dates from history).
Of special interest to teachers:
"Stargazers" and National Science Education Standards
Inventory of concepts, calculations and stories, by section.
A list of problems related to the material.
"Using Space to Teach Physics" (draft of article in The Physics Teacher, Feb.'99)
Afterthoughts on what this site has become.
Author and Curator: Dr. David P. Stern
Greenbelt, Maryland Mail to Dr.Stern: education["at" symbol]phy6.org .
Last updated: 20 November 2003