In modern color television tubes, an array of three electron beams, converging at a target, is deflected through angles of up to 55°. The conventional, small-angle deflection theory cannot be extended ...

Female off-duty police officer beaten by mob at London Tube station after challenging fare dodgers The off-duty policewoman confronted a gang of teenagers attempting to get through the barriers ...

By CST simulation, the X-ray tube based on gate controlled carbon nanotube cathode was designed. Preliminary researches were carried out on carbon nanotube cathode fabrication, metal mesh electrode ...