Microwave Power Products plans to close operations at the former Econco facility, ending its program for rebuilding tubes in vacuum tube-type transmitters.

I tested a pair of Écoute Headphones to figure out what's going on with them and have a sample for you. 0:00 intro 5:06 Audio Comparison 6:37 Conclusion PRE-AMP: Nutube 6P1 Dual-Triode Vacuum Tube ...

In the past year our journalists tested and evaluated thousands of products. We’ve deemed just 71 worthy of our inaugural ...

Physicists at the University of Colorado Boulder have demonstrated a new kind of vacuum ultraviolet laser that is 100 to 1,000 times more efficient than existing technologies of its kind. The ...

A 16-piece travel toiletries set so you can bring the perfect portions of all your creams, lotions, shampoos, and other ...

Abstract: The vacuum tube train can break through the difficulties of wheel-rail resistance, air resistance and noise of traditional wheel-rail railways. It can reach ultra-high speed of more than 600 ...

This article details practical challenges in fired heater operation within the oil and gas industry in relation to the existing instrumentation logics. Fired heaters are essential in crude oil ...