Telephone
hideThe 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 ✆.
For more information about Telephone, read the full article at
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News tagged with phone
Samsung Launches M5650 Music Phone
Electronics / Consumer & Gadgets
15 hours ago |
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Samsung Electronics today unveiled the Samsung M5650, a music-focused addition to its popular lineup of full touch screen handsets for young mobile users.
Attention Demands May Explain Why Texting While Driving Is So Dangerous
Medicine & Health / Psychology & Psychiatry
19 hours ago |
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1
(PhysOrg.com) -- A timely study in the journal Human Factors suggests why texting while driving is riskier than talking on a cell phone or with another passenger. Human factors/ergonomics researchers at the University of Uta ...
Maine to consider cell phone cancer warning
20 hours ago |
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(AP) -- A Maine legislator wants to make the state the first to require cell phones to carry warnings that they can cause brain cancer, although there is no consensus among scientists that they do and industry leaders dispute ...
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'Invisible bracelet' for emergency health alerts?
Electronics / Consumer & Gadgets
14 hours ago |
4 / 5 (1) |
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(AP) -- Emergency health alerts for the Facebook generation? The nation's ambulance crews are pushing a virtual medical ID system to rapidly learn a patient's health history during a crisis - and which can immediately text-message ...
Would a Google purchase of Yelp draw regulatory interest?
23 hours ago |
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Google Inc.'s reported plans to acquire local-listings service Yelp may face difficulties, with regulators attuned to the Mountain View, Calif.-based company's established dominance of the Internet-search and advertising ...
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