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Energy shield from the game Second Life. In speculative fiction, a force field, sometimes known as an energy shield, force shield, energy bubble, or deflector shield, is a barrier produced by something like energy, negative energy, dark energy, electromagnetic fields, gravitational fields, electric fields, quantum fields, telekinetic fields, plasma, particles, radiation, solid light, magic, or ...
A magnetic lens is a device for the focusing or deflection of moving charged particles, such as electrons or ions, by use of the magnetic Lorentz force. Its strength can often be varied by usage of electromagnets. Magnetic lenses are used in diverse applications, from cathode ray tubes over electron microscopy to particle accelerators.
Air gap in magnetic circuits is a term used to define an intentional gap left in the magnetic material. [1] In stationary devices, like inductors and transformers, the air gap is used for a few purposes: to minimize the magnetic saturation of their cores due to the direct current (DC) that might be flowing through the coils. [1]
A deflection yoke is a kind of magnetic lens, used in cathode ray tubes to scan the electron beam both vertically and horizontally over the whole screen. In a CRT television, the electron beam is moved in a raster scan on the screen. By adjusting the strength of the beam current, the brightness of the light produced by the phosphor on the ...
Smaller vessels may only have a single deflector shield generator which can be adjusted to protect specific parts of the ship, while larger vessels may have multiple generators each protecting a specific area. [44] Large starships with hangar bays will also employ another type of force field called a magnetic shield. These are activated ...
The plasma window (not to be confused with a plasma shield [1]) is a technology that fills a volume of space with plasma confined by a magnetic field.With current technology, this volume is quite small and the plasma is generated as a flat plane inside a cylindrical space.