Engineering

Students develop band device for opioid overdose alerts

Anyone familiar with statistics and headlines about opioid addiction was not shocked to see that in the United States by late 2017 opioid addiction was declared a national public health emergency.

Computer Sciences

The privacy risks of compiling mobility data

A new study by MIT researchers finds that the growing practice of compiling massive, anonymized datasets about people's movement patterns is a double-edged sword: While it can provide deep insights into human behavior for ...

Consumer & Gadgets

Patent talk shows Samsung's ideas for future phone design

Look what Samsung's future phones might look like, if patent talk is anything to go by. A Samsung patent filed with WIPO for a "Biometric sensor and device including the same" was published October 18.

Consumer & Gadgets

Consumers choose smartphones mostly because of their appearance

What motivates a customer to choose a particular model of mobile phone? Experts from the University of Seville, in collaboration with the Catholic University of North Chile, have recently published a study in which they report ...

Consumer & Gadgets

Google Pixel 3 phone aims to automate more daily tasks

There's not much about the physical details of Google's new Pixel 3 phone that you can't find elsewhere. That bigger display and curved design? Apple and Samsung phones already have that.

Hi Tech & Innovation

Talking gloves, tactile windows: New tech helps the disabled

Hadeel Ayoub slips a black glove onto her hand before beginning the swish of sign language that is meaningless to the untrained observer. Then she pushes a button on her wrist, and a small speaker relays the message drawn ...

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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