Pistol culture is saturated with upgrades that promise tighter groups, faster draws and tactical credibility, yet a ...

Families looking for summer fun in the middle of winter should consider a road trip to a nearby indoor water park. Some amusement sites offer slides with crazy twists and turns, surf simulators, lazy ...

Upgrading from a hammer to a nail gun is a matter of speed. The quick, forceful jolt of a cordless nail gun joins wood much faster than hitting in a nail by hand. These battery-powered tools can fire ...

Abstract: To shorten the design cycle of the 2-D axisymmetric electron gun, a new design methodology is reported in this article. Unlike the method of iterating the electron gun structure through ...

Abstract: In this article, we present a design scheme of an electron-optical system (EOS) for terahertz vacuum electron amplifiers. The performance characteristics are studied by simulation, and the ...