Superphysics
The Principles of the Visible World
This part talks about the principles of macro-phenomena such as heavenly bodies
Articles 121-125
Drifting Stars and The Solidity and Agitation of Bodies →
Articles 126-127
How Comets are Born →
Articles 128-130
The Phenomena of Comets →
Articles 131-133
Comet Visibility →
Articles 133-139
The Comet's Tail and Its Various Phenomena →
Articles 137-139
Why The Tails Of Comets Are Not Straight →
Articles 140-145
Planetary Motion →
Articles 146-148
How Are Planets Formed? →
Articles 149-153
The Motion of the Moon →
Articles 154-157
The Poles of the Equator →
