Here is a simple circuit for a one transistor Audion type radio powered by a 1.5 V battery. It employs a set of standard low-impedance headphones with the headphone socket wired so that the two sides ...

With its "genuine superheterodyne circuit" and "standard 22½-volt battery," the Regency TR-1 not only launched portable audio, it also brought us gobbledygook technospeak. The Regency was the first ...

So What Was the Transistor Good For? Transistors may have been useful to the phone company and to a handful of scientists building computers, but that wasn't enough to build an industry. Companies ...

As World War II gripped Europe, Winston Churchill knew that the conflict would be fought on two fronts—on the battlefield and in the scientific lab. The race between the Allies and the Axis powers to ...

Back in 1966, a suitable toy for a geeky kid was a radio kit. You could find simple crystal radio sets or some more advanced ones. But some lucky kids got the Philips Electronic Engineer EE8 Kit on ...

Today, you can walk into Dodger Stadium, device in hand. The device lets you make phone calls, send text messages, take photos, access statistics and replays, post your thoughts on social media, play ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. During World War Two scientists and ...