Laser 'Lightning rods' channel electricity through thin air
By zapping the air with a pair of powerful laser bursts, researchers at the University of Arizona have created highly focused pathways that can channel electricity through the atmosphere.
By zapping the air with a pair of powerful laser bursts, researchers at the University of Arizona have created highly focused pathways that can channel electricity through the atmosphere.
Optics & Photonics
Aug 19, 2014
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Question: The consensus is that it's proper to insert surge protectors between the power source and the computer. The question is, how big? How many joules? Is it true that they "wear out" in a year or so?
Other
Apr 9, 2009
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(Phys.org) —JQI researchers under the direction of Chris Monroe have produced quantum entanglement between a single atom's motion and its spin state thousands of times faster than previously reported, demonstrating unprecedented ...
Quantum Physics
Jun 5, 2013
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European scientists conducted groundbreaking single-electron experiments with exciting results for the field of nanoelectronics and quantum computing.
General Physics
Oct 17, 2012
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"Let's synchronize our watches." It's the classic line before a group goes out on a mission. We are all familiar with the concept of synchronized clocks - less known, but equally important, is that wireless devices need to ...
Telecom
Jun 10, 2015
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(PhysOrg.com) -- Scientists can now peer into the inner workings of catalyst nanoparticles 3,000 times smaller than a human hair within nanoseconds. The findings point the way toward future work that could greatly improve ...
Nanophysics
Jun 16, 2010
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(Phys.org)—Researchers from Toshiba and Cambridge University working together in Britain have developed a technique for sending quantum encryption keys over a shared fiber cable. As they describe in their paper published ...
University of California, Berkeley, chemists have discovered the secret to the success of a jellyfish protein whose green glow has made it the darling of biologists and the subject of the 2008 Nobel Prize in Physiology or ...
Biochemistry
Nov 11, 2009
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For the first time, an all-RIKEN team has watched the entire life cycle of tiny magnetic whirlpools, revealing their birth, movement and death. This will be important for informing the development of future low-power memory ...
Nanophysics
Sep 16, 2021
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Maintaining the correct time is no longer just a matter of keeping your watch wound -- especially when it comes to computers, telecommunications, and other complex systems. The clocks in these devices must stay accurate to ...
General Physics
Jul 20, 2010
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A nanosecond (ns) is one billionth of a second (10−9 s). One nanosecond is to one second as one second is to 31.7 years.
The word nanosecond is formed by the prefix nano and the unit second. Its symbol is ns.
A nanosecond is equal to 1000 picoseconds or 1⁄1000 microsecond. Because the next SI unit is 1000 times larger, times of 10−8 and 10−7 seconds are typically expressed as tens or hundreds of nanoseconds.
Times of this magnitude are commonly encountered in telecommunications, pulsed lasers and some areas of electronics. Some notable measurements in this range include:
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