(Phys.org) —Why do cell phones drop calls? Like a radio dial tuned to different frequencies (stations), cell phone antennas have tuning circuits that quickly switch frequencies when controlled by a voltage applied to a ...
Condensed Matter
Oct 16, 2013
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(Phys.org)—Engineers at Yale University have developed a new breed of micro fuel cell that could serve as a long-lasting, low-cost, and eco-friendly power source for portable electronic devices, such as tablet computers, ...
Energy & Green Tech
Nov 30, 2012
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For many people, smart phones are almost as indispensable as wallets. And soon, your smart phone could replace your wallet. A collection of the biggest wireless carriers, handset makers and software developers are putting ...
Hi Tech & Innovation
Jan 5, 2011
7
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A study published last month by researchers at the U.S. Department of Energy's Argonne National Laboratory provides theoretical evidence for a new effect that may lead to a way of measuring the exact temperature at which ...
Superconductivity
Mar 13, 2015
3
960
(AP) -- Goodbye, numeric cell phone keypads. You're going the way of the rotary dial. Touch screens and QWERTY keyboards will take over from here, thank you.
Consumer & Gadgets
Apr 2, 2009
3
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While lithium-ion batteries, widely used in mobile devices from cell phones to laptops, have one of the longest lifespans of commercial batteries today, they also have been behind a number of recent meltdowns and fires due ...
Nanomaterials
Aug 25, 2017
2
212
Answering the phone nowadays can be like playing Russian roulette—eventually, you're going to answer a robocall, and that's a game nobody wants to play.
Telecom
Jul 8, 2019
0
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(Phys.org) —You cannot look at the sun without special filters, and the naked eye cannot perceive certain wavelengths of sunlight. Solar physicists must consequently rely on spacecraft that can observe this invisible light ...
Space Exploration
Aug 21, 2014
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For most of the 20th century, the paradigm of wireless communication was a radio station with a single high-power transmitter. As long as you were within 20 miles or so of the transmitter, you could pick up the station.
Computer Sciences
Apr 12, 2011
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(Phys.org) -- A team of UCLA researchers has created the most powerful high-performance nanoscale microwave oscillators in the world, a development that could lead to cheaper, more energy-efficient mobile communication devices ...
Nanophysics
Jun 26, 2012
4
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