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, ...

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 ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...