Lamp, a device for producing illumination, consisting originally of a vessel containing a wick soaked in combustible material,…

Electric current, any movement of electric charge carriers, such as subatomic charged particles (e.g., electrons having negative charge, protons having positive charge), ions (atoms that have…

Electricity, phenomenon associated with stationary or moving electric charges. Electric charge is a fundamental property of matter and…

Control theory, field of applied mathematics that is relevant to the control of certain physical processes and systems. Although…

Resistance, in electricity, property of an electric circuit or part of a circuit that transforms electric energy into heat energy…

Relationship of program control and feedback control in an automated system. Machines that cannot function…

Loom, machine for weaving cloth. The earliest looms date from the 5th millennium BC and consisted of bars or…

Automation, the application of machines to tasks once performed by human beings or, increasingly, to…

Control system means by which a variable quantity or set of variable quantities is made to…