News tagged with mobile network

Switching light with a silver atom

Researchers working under Juerg Leuthold, Professor of Photonics and Communications, have created the world's smallest integrated optical switch. Applying a small voltage causes an atom to relocate, turning the switch on ...

dateFeb 01, 2016 in Nanophysics
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5G is NOT 4G+1

Recently, Spaniards had to re-tune all television sets as a result of the introduction of 4G mobile networks. Their data transmission speed (10 times higher than the 3rd generation's) required a release of the frequency band ...

dateNov 05, 2014 in Telecom
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Why the SIM card has had its day

The small microchips known as "subscriber identity modules" or SIM cards that are required for mobile phones to log on to a phone network will soon be 25 years old. While mobile phones and network technology have progressed ...

dateMar 05, 2015 in Telecom
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Explainer: What is a virtual private network (VPN)?

Have you ever wanted to exist in more than one place at the same time? The laws of physics suggest wormholes through space and time are hypothetical; but wormholes do exist in cyberspace and wonders can be found on the other ...

dateJun 17, 2013 in Internet
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