plural of virgin field

plural of playing field

A pair of binoculars for observing "in the field". / A small monocular refracting telescope. / The larger of the image lenses of an optical device.

The use of an electric field to control the conductivity of a channel in a semiconductor, as in FET.

plural of field day

plural of field hospital

A large mobile medical unit that temporarily takes care of casualties before they can be safely transported to more permanent hospital facilities.

plural of field of fire

The area that a projectile weapon (or group of weapons) can reach from a given position.

Used to describe the most common form of optical microscopy in which light is transmitted through the sample which appears on a bright background