Related topics: iphone · smartphone · cellphone · apple · google

Technology's double-bind for working women

Smartphones and other mobile devices amplify the patriarchal values that are part of our culture, according to new research by a Massey University expert in organizational communication and gender.

California earthquake alerts to become available statewide

Earthquake early warning alerts will become publicly available throughout California for the first time this week, potentially giving people time to protect themselves from harm, the Governor's Office of Emergency Services ...

Keeping cool with quantum wells

University of Tokyo researchers have announced a new approach for electrical cooling without the need for moving parts. By applying a bias voltage to quantum wells made of the semiconductor aluminum gallium arsenide, electrons ...

Zimbabwe's capital runs dry as taps cut off for 2M people

The more than 2 million residents of Zimbabwe's capital and surrounding towns are now without water after authorities shut down the city's main treatment plant, raising new fears about disease after a recent cholera outbreak ...

Team shows atoms can receive common communications signals

Researchers at the National Institute of Standards and Technology (NIST) have demonstrated a new type of sensor that uses atoms to receive commonly used communications signals. This atom-based receiver has the potential to ...

page 1 from 23

Telephone

The telephone (from the Greek: τῆλε, tēle, "far" and φωνή, phōnē, "voice") is a telecommunications device that transmits and receives sound, most commonly the human voice. It is one of the most common household appliances in the developed world, and has long been considered indispensable to business, industry and government. The word "telephone" has been adapted to many languages and is widely recognized around the world.

The device operates principally by converting sound waves into electrical signals, and electrical signals into sound waves. Such signals when conveyed through telephone networks — and often converted to electronic and/or optical signals — enable nearly every telephone user to communicate with nearly every other worldwide. Graphic symbols used to designate telephone service or phone-related information in print, signage, and other media include ℡, ☎, ☏, and ✆.

This text uses material from Wikipedia, licensed under CC BY-SA