The video explains the operation of the vacuum tube, specifically the triode, which is essential in modern communication ...

The seven transmitters are installed with vacuum tubes, which have been used to amplify radio waves since the station started operations. Each tube weighs about 70 kilograms, according to Matsui.

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He invented the three-electrode vacuum tube without understanding how it worked. His grid-triode was no great success as a detector, but it did eventually make modern radio and electronics possible ...

If you want to enjoy Hi-Res audio on the go, then this new music player from Shanling may be one to check out.

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Many rely on Dyson vacuum deals to drop those lofty price tags into more manageable positions. These are premium dust suckers, and they command a high MSRP - but with regular savings and bundle ...

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However, the vacuum tube is large and once built it's difficult to break down so it does take up a reasonable amount of room in storage. It blows and sucks at variable speed via a dial that sits under ...

Dan Coulter looks inside a jukebox from the 1940s in the backroom of his store, Vintage Gameroom, in Newport. (Leila Navidi/The Minnesota Star Tribune) ...