IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This unit was designed to generate ...

As the first of a series of meetings to be held during the coming months, S. W. Dean ocC. will give a lecture on the "Alexanderson Alternator" to the Wireless Club next Tuesday evening, February 20, ...

If you need to generate a radio frequency electrical signal, you will make some form of electronic oscillator. We’ll probably all be used to oscillators using transistors, tubes, logic gates or a host ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Fig. 1: Operating at 17.2 kHz, the Alexanderson alternator rotating armature radio transmitter at ...