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A force field, sometimes called an energy shield, force shield, or deflector shield, is a concept of a field, tightly bound and of significant magnitude, so that objects affected by the particular force relating the field are unable to pass through the central axis of the field and reach the other side.

Scientific Research

A University of Washington group in Seattle has been experimenting with using a bubble of charged plasma to surround a spacecraft, contained by a fine mesh of superconducting wire. This would protect the spacecraft from interstellar radiation and some particles without needing physical shielding.

Likewise, Rutherford Appleton Laboratory is attempting to design an actual test satellite, which should orbit Earth with a charged plasma field around it.

Plasma windows have some similarities to force fields, as they are difficult for matter to pass through.

Diamagnetic levitation has been demonstrated to produce a force field strong enough to enable a frog to hover in mid-air.

Workers at a 3M factory in South Carolina in August of 1980 encountered an "invisible electrostatic wall" in an area under a fast-moving sheet of polypropylene film (the plastic for tape) that had become electrically charged to a voltage that "had to be in the Megavolt range." This phenomenon was a result of Coulumb's Law.