Force field

A force field, or energy shield, force shield, force bubble, defence shield or deflector shield, is a barrier made of energy, negative energy, dark energy, electromagnetic fields, gravitational fields, electric fields, quantum fields, plasma, particles, radiation, solid light, or pure force. It protects a person, area, or object from attacks or intrusions or even deflects energy attacks back at the attacker, or acts as a containment field for unstable particles or even antimatter.

Deflector shields are a type of force field that surrounds a spaceship, space station, or planet to protect against enemy attacks or natural hazards. It could also be used inside a ship or habitat to strengthen the structural integrity of its hull. Shields can have unwelcome side-effects such as the prevention of teleportation to and from inside.

Other uses:

 * A barrier with a breathable environment allowing workers to function in areas exposed to the vacuum of space.
 * A walkable surface between two points without the necessity of building a bridge.
 * An emergency quarantine area to service those afflicted by harmful biological or chemical agents
 * A fire extinguisher where oxygen is exhausted by the use of a space confined by a force field thereby starving the fire
 * As a security apparatus used to confine or contain a captive

Examples:

 * In Marvel: Jean Grey is able to use her telekinesis to create a barrier of telekinetic energy that acts as a forcefield by repelling objects. Magneto is able to use his magnetism to manipulate magnetic fields into acting as shields. Invisible Woman is able to become invisible as well as use psionic force to travel and create defensive barriers.
 * The Green Lantern Ring is able to create force fields amongst its many powers.
 * Deflector shields and force fields in Star Trek.