If a vacuum line much smaller than the flange diameter of the turbopump (DN 100 (100 mm)) is used, the effective pumping speed will decrease. A DN 25 (25 mm) vacuum line will result in only around 7.4 ...

There's always a new vacuum to try. My office always has a new cordless stick vacuum next to my desk, waiting for me to test it and compare it to the competition. With the new vacuum in my home, along ...

Start 2026 with world-class cleaning power with the Dyson V15 Detect, my personal favorite as a professional vacuum tester, and discounted by $350 in the sales ...

We might tend to take the word “diode” for granted if we’re thinking of a “diode” as just a two-lead or two-terminal device that gets used in this or that place for this or that purpose. It can become ...

Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea ...

Abstract: Vertical nanoscale channel vacuum diode (VNCVD) with multiregion electron emission structures was constructed using ion beam etching and photolithography. The influence of multiregion ...

The thermionic tube has gone by many names throughout the timeline of its life. It’s also known as and referred to as a vacuum tube, vacuum diode, Fleming valve, and kenotron. Sir John Ambrose Fleming ...

Multifunctional. Adorable. Quiet. Small. Absolute mapping makes navigation spot-on. Learns how to get around obstacles and identifies floor surfaces by itself. Waste bag contains both wet and dry ...

Abstract: An ON-chip vacuum transistor based on electron emission from SiOx tunneling diodes formed at the side surface of a thin SiO2 film is proposed, where electrons transport in the vacuum channel ...

Given appropriate models for vacuum tubes, circuit simulators such as SPICE make analysis based on such nonlinear models a tractable effort. The Langmuir, Leach, and Koren models are discussed for the ...

The powerful EHF radiation generated in a relativistic high-voltage pulsed magnetron of the 8 mm range is experimentally investigated. The factors that negatively affect the generation of EHF ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...