The Internet works by connecting billions of devices worldwide into a single network, where data is broken into small packets,

A battery works by converting stored chemical energy directly into electrical energy through controlled redox (reduction-oxidation) reactions between two different

A transistor works by using a small electrical current or voltage to control the flow of a much larger current

A car engine (internal combustion engine) works by burning a mixture of fuel and air inside a sealed cylinder, harnessing

A light bulb works by converting electrical energy into visible light (and a lot of heat) through various physical processes,

Radio works by converting sound into invisible electromagnetic waves, transmitting them through the air over long distances, and then converting