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How to make a mini vacuum cleaner from plastic bottles & a DC motor | DIY step-by-step tutorial

Learn how to create a functional DIY mini vacuum cleaner using everyday materials like a plastic bottle and a small DC motor.
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Vacuum Tubes in russia's Oreshnik Reveal a Technological Failure, Not Nuclear EMP Resilience — Falling Behind 1960s U.S. Minuteman

russian commentators have attempted to explain the presence of a vacuum tube in the Oreshnik missile as yet another so-called "unique, analog-free solution," claiming it was intended to ensure ...
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IEEE

The Vacuum Tube's Forgotten Rival: Magnetic Amplifiers, the Alt-Tech of the Third Reich, Lasted into the Internet Era

Abstract: During the second world War, the German military developed what were at the time some very sophisticated technologies, including the V-2 rockets it used to rain destruction on London. Yet ...
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Datong becomes center for frontier tech research

A computer-generated model illustrates the low vacuum tube maglev train test line in Datong. Trial operation of the first phase of the line will begin by the end of September. WU LIUHONG/FOR CHINA ...
IEEE

A 3D Non-stationary MmWave Channel Model for Vacuum Tube Ultra-High-Speed Train Channels

Abstract: As a potential development direction of future transportation, the vacuum tube ultra-high-speed train (UHST) wireless communication systems have newly different channel characteristics from ...