Force field

A force field is an item of defensive technology usually used to protect the area it surrounds. The shield itself is usually a transparent layer of energy covering a building, lifeform or ship. Force fields can be used to keep somewhere air tight or in war they can be used to deflect enemy weaponry. Force fields are usually clear but some appear blue or even red in colour. Most shields are powered by a generator near the protected area. The shields are commonly shaped like a dome or a bubble but this is not always the case.