Orbital Dynamics Part 03 The Sun, the Moon, and the Earth
Channel: Jon Toellner
Date: 2019-03-03

A basic course on Orbital Dynamics. Part 03 talks about how the ancients determined the relative sizes of the Earth, Sun, and Moon.

0:00 Introduction
0:51 Flat Earth
1:23 Aristotle's Cosmological Model
2:31 Lunar Eclipse
3:08 A Spherical Earth
3:23 Lunar Eclipse Proves a Spherical Earth
3:37 Burnt Orange Moon in a Lunar Eclipse
4:18 Visible Stars by Latitude
4:46 Sun and Moon Rise and Set
5:26 Phases of the Moon
6:04 Aristarchus' Geometric Construction
6:32 Aristarchus' Geometric Construction in Geometer's Sketchpad
12:09 Relative Size of the Sun and Moon
14:08 Size and Distance of the Sun and Moon in Lunar Radai
16:39 Relative Size of the Earth with Geometer's Sketchpad
27:52 Relative Sizes in Aristarchus' Universe
28:56 Arguments Against Heliocentrism: Spin of the Earth
30:14 Arguments Against Heliocentrism: Parallax
31:30 Actual Relative Size of the Sun, Earth, and Moon
34:38 Next Part