Phosphoric acid fuel cells (PAFC) operate at temperatures around 150 to 200 C (about 300 to 400 degrees F). As the name suggests, PAFCs use phosphoric acid as the electrolyte. Positively charged ...

The IAS Computer was named for the Institute for Advanced Study in Princeton, New Jersey. The computer was built from 1946 to 1951 at the Institute under the direction of John von Neumann, a ...

My Computing Device showcases the complex story of how Americans came to use and own computers and challenges them to examine their own personal relationships with devices. A range of mechanical and ...

Joshua Gabriel Paulin, in Sweden, developed an aneroid barometer with an adjustable capsule that was suitable for use in altimetry. This example is marked, on its face, “PRECISION ALTIMETER / Patented ...

In October 1942, the New York publishing firm Simon & Schuster, the Artists and Writers Guild, and the Western Printing and Lithographing Company of Racine, Wisconsin, joined forces to create a new ...

The Underwood Model 5, introduced in 1899, is the result of almost thirty years of innovation and improvements in typewriter manufacture. It became the ubiquitous office machine for another thirty ...

In the beginning of 1862, citizens went on a hoarding frenzy as high inflation plagued the market after the outbreak of the Civil War. Their target: coins of gold, silver, and copper. The hoarding ...