A more thorough explanation:

Definition: Facsimile transmission, also known as fax, is a method of sending and receiving documents or images over a telephone line. It involves scanning a physical document or image and transmitting it as a digital signal to a receiving fax machine, which then prints out a copy of the original document or image.

Examples:

1. John needed to send a signed contract to his client, but he didn't have access to a scanner or a printer. He decided to use a fax machine to send the document instead.
2. Mary received a fax from her doctor's office with her test results. She was able to review the results and discuss them with her doctor during her next appointment.

The examples illustrate how facsimile transmission, or fax, can be used to send and receive important documents or information quickly and efficiently. In the first example, John was able to send a signed contract without having to physically mail it or find a scanner and printer. In the second example, Mary received important medical information in a timely manner, allowing her to take action and discuss the results with her doctor.