In this scientific journal written begun April 1, 1776, James Dinwiddie discusses magnetism and electricity. He includes several diagrams related to magnets and magnetic fields and queries at the end of the section. This file consists of one journal.
These notes written by James Dinwiddie examine a number of topics in physics including gravity, force, velocity, light, and mirrors. Dinwiddie also mentions the classical natural philosophers Sappho, Archimedes, and Hermes.