A vacuum tube is just that: a glass tube surrounding a vacuum (an area from which all gases have been removed). What makes it interesting is that when electrical contacts are put on the ends, you can ...

Virgin Hyperloop One is testing a system that would put passengers in pods hurtling through vacuum tubes. Other companies are moving ahead with similar plans. The tube used for unmanned testing by ...

The video explains the operation of the vacuum tube, specifically the triode, which is essential in modern communication devices like radios and telephones. It describes how a tungsten filament emits ...

SELAH — As spring chinook make their way up the Yakima River this year, a select few are taking an unusual route: through new vacuum tube technology being tested at Roza Dam. The Yakama Nation ...

Forbes contributors publish independent expert analyses and insights. Brad Moon covers audio gear, Apple products and consumer tech. This article is more than 6 years old. Analog audio is having a ...