Example of Explanation Text

How does a cell phone work?

A cell phone, or we know as hand phone, is an important gadget in this modern world. What is a cell phone? A cell phone is actually a radio in certain way. Like a radio, by a cell phone we can communicate to other people in real time. Million people use cell phone for their communication. Even nowadays, people use cell phones to communicate in voice, written and data. Alexander Graham Bell is the person who make great change in the way people communicate to each other. He invented a telephone in 1876. Actually, wireless radio was formally known in 1894 presented by Guglielmo Marconi. Using that technologies, then a cell phone was born. However do you know how actually cell phones work?

This short explanation on how a cell phone work is really wonderful. A cell phone or in long term "cellular telephone' works by transmitting signals of radio to towers of cellular. The towers are networked to a central switching station. The connection usually uses wire, fiber optic-cables, or microwave.

Then the central switching station which handle calls in certain given area is directed and connected to the wire-based telephone system. The cellulars are pick up by the towers and relayed to another cellular telephone user or the user of wire-based telephone network.

The towers can be different in the availability and capability to receive signals. Some tower can receive the signal from short distance and the others can receive more distance. However, there are usually more than one tower in certain given area so that the system can handle the increasing telephone traffic.