How+Fax+Machines+Work?

How does a fax machine work?
The idea of fax machines has been around since 1842, when Alexander Bain invented a machine capable of receiving signals from a telegraph wire and translating them into images on paper. Fax machines provide an easy way to send document to any phone number equipped with a fax machine. A fax machine works by scanning each outgoing page, converting the image into a series of light and dark dots. This pattern is then translated into audio tones, and sent over regular phone lines. The receiving fax "hears" the tones, pieces the grid together, and prints the total number of dots. The resulting document is a black and white likeness of the original page.