The motion of very small bodies when agitated by centripetal forces

We simplify Book 2 of Principia Mathematica by Isaac Newton.

Finding the orbits from the focus given

Newton

The Sine of Incidence

Newton

Proposition 96 Theorem 50

The Reflexions and Refractions of Light

Newton

Proposition 97 Problem 17

The Reflexions and Refractions of Light

Newton

Proposition 98 Problem 48

Finding the orbits from the focus given

Newton