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 ✆.
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News tagged with phone
iPhones are musical instruments in new course and ensemble (w/ Video)
Dec 01, 2009 |
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(PhysOrg.com) -- iPhones are being used as musical instruments in a new course at the University of Michigan.
AT&T to release cellphone with optional projector
Electronics / Consumer & Gadgets
Dec 01, 2009 |
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If cellphones with built-in video projectors are going to take the country by storm, then Dallas will be at the eye of the hurricane.
GPS cell phone apps challenge standalone devices
Electronics / Consumer & Gadgets
Nov 28, 2009 |
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(AP) -- The growth of cell phones with global-positioning technology is making life uncertain for the makers of personal navigational devices that help drivers figure out where they are and where to go.
Researchers create cell phones for sign language
Dec 02, 2009 |
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(PhysOrg.com) -- Cornell researchers and colleagues have created cell phones that allow deaf people to communicate in sign language, the same way hearing people use phones to talk.
Nokia sues top LCD, CRT display makers
Dec 01, 2009 |
5 / 5 (1) |
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(AP) -- Nokia Corp., the world's biggest mobile phone maker, said Tuesday it has filed suits against several leading liquid crystal display makers - including Philips, Toshiba, Sharp and Samsung - for alleged price fixing.
Teachers begin using cell phones for class lessons
Nov 27, 2009 |
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(AP) -- Ariana Leonard's high school students shuffled in their seats, eagerly awaiting a cue from their Spanish teacher that the assignment would begin. "Take out your cell phones," she said in Spanish.
Bling bling with your ring ring: Dekoden craze sees cell phones get a touch of glitz, glamour
Electronics / Consumer & Gadgets
Nov 27, 2009 |
1 / 5 (1) |
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Cell phone owners are ringing the changes and putting a smile on their dial by adorning their mobiles with ornamental stickers, charms and beads -- and the craze just keeps getting bigger.
Apple's iPhone set to make splash in South Korea
Nov 27, 2009 |
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(AP) -- The iPhone's arrival in South Korea is generating considerable buzz among consumers and industry watchers amid expectations it will shake up a market dominated by world-beating domestic manufacturers.
Gift Guide: Accessories to jazz up mobile phones
Electronics / Consumer & Gadgets
Nov 27, 2009 |
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People you know have spent small fortunes on shiny new smart phones such as the iPhone 3GS, a BlackBerry or the Droid. But the devices still don't have all the features they want.
Lenovo buying back mobile phone business
Nov 27, 2009 |
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(AP) -- Personal computer maker Lenovo Group said Friday it is joining the race to develop products that link phones and PCs by buying back a mobile phone business that it sold last year.
Grant to help zoo visitors learn more about science with their cell phones
Nov 30, 2009 |
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Zoo visitors may soon use their cell phones to "Call the Wild" as part of a project led by University of Florida researchers to help the public learn more about the nature of science.
Sprint to stop selling certain push-to-talk phones
Nov 30, 2009 |
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(AP) -- Sprint Nextel Corp. is giving up on a technology that allows some Sprint-branded phones to use a "push-to-talk" walkie-talkie service similar to what's available on the company's Nextel-branded phones.
NIST develops experimental validation tool for cell phone forensics
Dec 02, 2009 |
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Viewers of TV dramas don't focus on the technology behind how a forensics crime team tracks a terrorist or drug ring using cell phone data, but scientists at the National Institute of Standards and Technology do. NIST researchers ...
No change in brain tumor incidence during a time when cell phone usage increased
16 hours ago |
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There was no substantial change in brain tumor incidence among adults 5 to 10 years after cell phone usage sharply increased, according to a new brief communication published online December 3 in the Journal of the National Ca ...
