News tagged with limiter
Scientists design solar cells that exceed the conventional light-trapping limit
(PhysOrg.com) -- The best performing solar cells are those that are thick enough to absorb light from the entire solar spectrum, while the cheapest solar cells are thin ones, since they require less, and potentially ...
Jan 20, 2012 |
4.7 / 5 (37) |
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The quantum world writ large: Using short optical pulses to study macroscopic quantum behavior
(PhysOrg.com) -- Einstein infamously dismissed quantum entanglement as spooky action at a distance and quantum uncertainty with his quip that God does not play dice with the universe. Aside from revealing his ...
Sep 27, 2011 |
4.6 / 5 (12) |
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New fundamental limitation restricts position accuracy of quantum objects
(PhysOrg.com) -- Although the uncertainty principle is probably the most well-known example of a fundamental limitation of measurement precision in quantum mechanics, it is not the only one. In fact, every physical system ...
Mar 28, 2011 |
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Radiation Review: Some People May be 'Allergic' to Cell Phones, Computers
(PhysOrg.com) -- How exactly does the radiation from electromagnetic fields (EMF) affect the human body? Is it possible that cell phones, computer monitors, TVs, and other electronic devices - which operate ...
Medicine & Health / Medical research
May 15, 2009 |
3.4 / 5 (38) |
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Physicists see solution to critical barrier to fusion
(Phys.org) -- Physicists have discovered a possible solution to a mystery that has long baffled researchers working to harness fusion. If confirmed by experiment, the finding could help scientists eliminate ...
Apr 23, 2012 |
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A breakthrough in superlens development: Cheap, simple lens to let us see a single virus
A superlens would let you see a virus in a drop of blood and open the door to better and cheaper electronics. It might, says Durdu Guney, make ultra-high-resolution microscopes as commonplace as cameras in ...
Jan 09, 2012 |
4.8 / 5 (29) |
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Coke cans focus sound waves beyond the diffraction limit
(PhysOrg.com) -- When trying to focus sound waves into as small an area as possible, scientists run into a fundamental limit called the diffraction limit. That is, when sound waves are focused into a region ...
Jul 12, 2011 |
4.7 / 5 (20) |
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New lens doubles the resolution of conventional microscopes
(PhysOrg.com) -- Conventional lenses can resolve structures around 200 nanometers (nm) in size, but scientists in Europe have for the first time developed a lens capable of achieving optical resolution of ...
Mar 25, 2011 |
4.8 / 5 (23) |
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Data from savvy cabbies to help improve online mapping
(PhysOrg.com) -- Microsoft is planning to tap into the intimate knowledge taxi drivers have of their cities to improve their online mapping systems and help drivers navigate to their destinations faster.
Technology / Hi Tech & Innovation
Nov 08, 2010 |
3.6 / 5 (5) |
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Coordination failure: Researchers provide insight into impacts of too much communication
(PhysOrg.com) -- Individuals within a networked system coordinate their activities by communicating to each other information such as their position, speed, or intention. At first glance, it seems that more ...
Sep 23, 2010 |
5 / 5 (5) |
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Novel negative-index metamaterial that responds to visible light designed
A group of scientists led by researchers from the California Institute of Technology has engineered a type of artificial optical material—a metamaterial—with a particular three-dimensional structure such that ...
Apr 22, 2010 |
4.8 / 5 (43) |
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A Little Less Force: Making Atomic Force Microscopy Work for Cells
(PhysOrg.com) -- Scientists with Berkeley Lab?s Molecular Foundry have developed a nanowire-based imaging technique by which atomic force microscopy could be used to study biological cells and other soft ...
Apr 20, 2010 |
4.9 / 5 (8) |
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Turning heat to electricity... efficiently
(PhysOrg.com) -- In everything from computer processor chips to car engines to electric powerplants, the need to get rid of excess heat creates a major source of inefficiency. But new research points the way ...
Nov 18, 2009 |
4.8 / 5 (67) |
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Quantum-limited Measurement Method for Nanosensors
(PhysOrg.com) -- (PhysOrg.com) -- A team of scientists from the Max Planck Institute of Quantum Optics and the Ludwig Maximilians University have succeeded in applying a novel optical method to nano-mechanical ...
Oct 14, 2009 |
4.3 / 5 (4) |
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Computers Faster Only for 75 More Years? Physicists determine nature's limit to making faster processors
With the speed of computers so regularly seeing dramatic increases in their processing speed, it seems that it shouldn't be too long before the machines become infinitely fast -- except they can't.
Oct 14, 2009 |
4.3 / 5 (27) |
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