Explain cyclotron and potentiometer???

Cyclotron:

• Cyclotron is a device used to accelerate charged bodies to very high velocities (or high kinetic energies) using crossed (or mutually perpendicular) electric and magnetic fields

Potentiometer is defined as a three-terminal resistor having either sliding or rotating contact that forms an adjustable voltage divider. In order to use the potentiometer as a rheostat or variable resistor, it should have only two terminals with one end and the wiper.
Following are the terms used to describe types of potentiometers:

• Slider pot or slide pot: This can be adjusted by sliding the wiper right or left with a finger or thumb.
• Thumbwheel pot or thumb pot: This can be adjusted infrequently with the help of small thumbwheel which is a small rotating potentiometer.
• Trimmer pot or trimpot: This can be adjusted once for fine tuning of an electric signal.