On the Various Forces of Nature - Michael Faraday

A non-mathematical survey of the fundamental forces of nature and some relationships among them. This is a series of lectures aimed at young people. He starts off with the most fundamental and familiar forces of all: Gravity and Heat. Then by a progression of examples and experiments goes on to describe atomic/molecular adhesion in solids, liquids and gases, which he groups under the rubric of "Chemical Affinity". And, no collection of Faraday's theories could omit his discoveries in Electricity and Magnetism. (Summary by William A Jones)