News tagged with distance
New DVT guidelines: No evidence to support 'economy class syndrome'
New evidence-based guidelines from the American College of Chest Physicians (ACCP) address the many risk factors for developing a deep vein thrombosis (DVT), or blood clot, as the result of long-distance travel. These risk ...
Feb 07, 2012 |
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Detailed picture of how myoV 'walks' along actin tracks
A new study in the Journal of General Physiology uses state-of-the-art fluorescence microscopy to provide a striking 3-D picture of how class V myosins (myoV) "walk" along their actin track.
Jan 30, 2012 |
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Trees influence epiphyte and invertebrate communities
Studies in temperate regions have demonstrated that genetic differences between individual trees affect the ecological communities and ecosystem processes associated with them. Now scientists at Manchester ...
Jan 05, 2012 |
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Cosmic research picked in breakthroughs of 2011
(PhysOrg.com) -- Astronomers from the Dark Cosmology Center at the Niels Bohr Institute have developed a groundbreaking method for measuring long distances in the universe using light from quasars. Quasars ...
Dec 19, 2011 |
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Multimodal interaction: Humanizing the human-computer interface
In everyday life humans use speech, gestures, facial expressions, touch to communicate. And, over long distances we resort to text messages and other such modern technology. Notably, when we interact with ...
Technology / Computer Sciences
Dec 14, 2011 |
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Draft sequence of monarch butterfly genome presented
Each fall millions of monarch butterflies from across the eastern United States use a time-compensated sun compass to direct their navigation south, traveling up to 2,000 miles to an overwintering site in ...
Nov 23, 2011 |
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Viking 'sunstone' more than a myth
Ancient tales of Norse mariners using mysterious sunstones to navigate the ocean when clouds obscured the Sun and stars are more than just legend, according to a study published Wednesday.
Other Sciences / Archaeology & Fossils
Nov 02, 2011 |
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Preventing HIV/AIDS one SMS at a time
One million people in Uganda live with HIV/AIDS, where long distances and expensive travel costs significantly limit access to treatment. By employing an innovative mobile-technology strategy, Dr. Femida Gwadry-Sridhar, Director ...
Medicine & Health / HIV & AIDS
Nov 01, 2011 |
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Teeth study shows big dinosaurs trekked for food
What did giant plant-munching dinosaurs do when they couldn't find enough to eat in the parched American West? They hit the road. An analysis of fossilized teeth adds further evidence that the long-necked ...
Other Sciences / Archaeology & Fossils
Oct 26, 2011 |
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Researchers change the color and shape of a single photon
(PhysOrg.com) -- A team of researchers from the CNST and ITL has simultaneously changed the color and shape of a single photon, the smallest unit of light.
Oct 06, 2011 |
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Scientists lay out plans for efficient harvesting of solar energy
Solar power could be harvested more efficiently and transported over long distances using tiny molecular circuits, according to research inspired by new insights into natural photosynthesis.
Sep 23, 2011 |
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Artificial light-harvesting method achieves 100% energy transfer efficiency
(PhysOrg.com) -- In an attempt to mimic the photosynthetic systems found in plants and some bacteria, scientists have taken a step toward developing an artificial light-harvesting system (LHS) that meets one ...
Sep 01, 2011 |
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Better 'photon loops' may be key to computer and physics advances
Surprisingly, transmitting information-rich photons thousands of miles through fiber-optic cable is far easier than reliably sending them just a few nanometers through a computer circuit. However, it may soon ...
Aug 22, 2011 |
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A photon’s point of view
From a photon’s point of view, it is emitted and then instantaneously reabsorbed. This is true for a photon emitted in the core of the Sun, which might be reabsorbed after crossing a fraction of a millimetre’s ...
Space & Earth / Space Exploration
Aug 08, 2011 |
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Carbon hitches a ride from field to market
Today, farming often involves transporting crops long distances so consumers from Maine to California can enjoy Midwest corn, Northwest cherries and other produce when they are out of season locally. But it ...
Aug 04, 2011 |
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Distance
Distance (or farness) is a numerical description of how far apart objects are. In physics or everyday discussion, distance may refer to a physical length, or an estimation based on other criteria (e.g. "two counties over"). In mathematics, a distance function or metric is a generalization of the concept of physical distance. A metric is a function that behaves according to a specific set of rules, and provides a concrete way of describing what it means for elements of some space to be "close to" or "far away from" each other.
In most cases, "distance from A to B" is interchangeable with "distance between B and A".
For more information about Distance, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
