Adam Boesel isn’t quite ready to light up his neighborhood with a legion of electricity-generating exercise bikes, much less his own gym. But the owner of the Green Microgym in Portland, Ore., hopes ...

Dynamo Micropower is a tiny startup that’s only been around a short time, trying to build a very small generator for the home. But since forming the company in January, co-founder Jason Ethier, 23, ...

Digital Journal – In Portland, the Green Microgym is claiming to be the first fitness center in the U.S. to use solar power and human-powered cardio machines to produce renewable energy. Essentially, ...

THIS little book of 75 pages is designed to give to amateurs practical information as to the construction of a small working dynamo-machine. What is aimed at is the building up of a machine capable of ...

ELECTRICAL inventions of innumerable kinds have of late followed one another with bewildering rapidity; and the impetus to invention afforded by the present development of electric lighting, and by ...

A letter from Thomas Edison to Malcolm MacLaren of Princeton dated 5 January 1916, describing a dynamo, catalog number 315800. Transcription: "Referring to our recent correspondence in regard to the ...

The cartoonist of the future wouldn’t have to lift a finger, thanks to tomorrow’s wonderful machines. At least that was the idea behind this 1923 cartoon by H.T. Webster. Americans of the 1920s saw a ...