Sometimes the temperature does not decrease with height in the troposphere, but increases. Such a situation is known as a temperature inversion. Temperature inversions limit or prevent the vertical mixing of air.
Middle range machines can cost on average $400 and are often multi-function with copier and laser printer capabilities. Finally, high-end machines which offer high speeds, high capacity and high resolution come at a higher price-expect to pay $1000 - $2500 for such a fax machine.
Definition and Usage. A fax machine is a device that is used to send documents electronically over a telephone network. The transmissions it sends are called âfaxes, â and these can be between two fax machines, or between a fax machine and computer or online fax service that is equipped to send and receive faxes. Definition. fax machine.