In its purest form, an engine is nothing more than an air pump; it takes in air and then returns it, although in a slightly modified form. Maximizing an engine's ability to process air will also ...

When you’ve gone to the trouble of building your own backyard railway, chances are pretty good that at some point, you’re going to want to add a locomotive of some sort. After all, nobody wants to be ...

Researchers say they've developed a method that could replace the two diesel engines currently powering a ferry boat with pneumatic propellers - offering a potentially cleaner, quieter, and more ...

On page 153, VoL 8, SCIENTIFIC AMERICAN, there is an engraving of Capt. Ericsson' hot air engine patented in 1833 ; on the succeeding page, 154, a figure of the one patented in 1850, and on page 180, ...