shielding

Definitions

The erection of an interfering barrier (usually made of metal) to prevent electric, magnetic, or electromagnetic fields from escaping or entering an enclosed area.
Any device that blocks, diffuses or redirects light, such as a baffle or lens.

A material or enclosure which blocks the effects of an electric field, while allowing free passage to magnetic fields. It may consist, for instance, of a wire mesh or screen which provides a low-resistance path to ground. Utilized, for example, to prevent interaction between circuits, or to enhance the directivity of an antenna. Another example is a metallized plastic bag which helps protect circuit boards against electrostatic discharges during storage and handling, en route to being installed. Such a bag does not have to be grounded. Also, a shielding which serves to confine an electric field within an enclosure, or the use of such a shielding. Also called shield (2), screening (1), screen (2), electrostatic shielding, or electric shielding.
A material or enclosure utilized to isolate a magnetic field from its surroundings, or vice versa. Materials with high magnetic permeability are used for this purpose. Also called shield (3), screening (2), screen (3), or magnetic shielding (1).
synonymscreen
synonymscreening

6 definitions in context