An MRI (or magnetic resonance imaging) scan is a radiology technique that uses magnetism, radio waves, and a computer to produce images of body structures. The MRI scanner is a tube surrounded by a giant circular magnet. The patient is placed on a moveable bed that is inserted into the magnet.
electrical switch. Thesaurus. Definitions of electrical switch. 1. n control consisting of a mechanical or electrical or electronic device for making or breaking or changing the connections in a circuit. switch for reversing the direction of an electric current. a switch that interrupts an electric circuit in the event of an overload.
The Ethernet switch is a basic component of the computer network. It connects computers, printers and routers on your network. The switch is an intelligent device that learns which devices are plugged into which ports and âswitchesâ network traffic from one host to another based on that knowledge.