The Principles of the Earth
The principles of phenomena on Earth according to Descartes
Article 120-123
Burning, tasteless, and acidic waters →

Articles 124
All About Glass →

Articles 129-132
Why is Glass Brittle and Transparent? →

Article 133-138
The Magnet →

Article 139-144
The nature of the magnet →

Article 145-
The Properties of Magnets →

Article 146-149
How the virtual photons flow through the Earth →

Articles 152-154
Why do 2 Magnets Attract Each Other? →

Article 155-162
Why do the parts of the magnet, which were united before, also repel each other? →

Articles 163-169
Why is steel more suitable for receiving it than lighter iron? →

Article 171
Why does a magnet attract iron? →

Article 179-183
Iron filings scattered around a magnet →