News tagged with distance
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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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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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 |
3.9 / 5 (39) |
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Long-Distance Teleportation Between Two Atoms: First between atoms 1 meter apart
(PhysOrg.com) -- For the first time, scientists have successfully teleported information between two separate atoms in unconnected enclosures a meter apart - a significant milestone in the global quest for ...
Jan 22, 2009 |
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Three times farther away in outer space than previously possible -- a new way to measure cosmic distances
Ohio State University researchers have found a way to measure distances to objects three times farther away in outer space than previously possible, by extending a common measurement technique.
Jun 08, 2009 |
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Climate change makes migrations longer for birds
Bird migrations are likely to get longer according to the first ever study of the potential impacts of climate change on the breeding and winter ranges of migrant birds.
Apr 15, 2009 |
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The annihilating effects of space travel
Long distance space travel could create the ultimate 'killer entrance', devastating your destination and anything around the arriving spacecraft, according to calculations by Professor Geraint Lewis and two ...
Mar 12, 2012 |
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Early humans won at running; Neandertals won at walking
(PhysOrg.com) -- New research has compared the performance of the heels of modern-day distance runners to the heels of Neandertals and ancient Homo sapiens. The results show the Neandertals' heels were taller ...
Other Sciences / Archaeology & Fossils
Feb 07, 2011 |
4.9 / 5 (16) |
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Cosmology standard candle not so standard after all
(PhysOrg.com) -- Astronomers have turned up the first direct proof that "standard candles" used to illuminate the size of the universe, termed Cepheids, shrink in mass, making them not quite as standard as ...
Jan 12, 2011 |
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'Amplified' nanotubes may power the future
Rice University scientists have achieved a pivotal breakthrough in the development of a cable that will make an efficient electric grid of the future possible.
Nanotechnology / Nanomaterials
Jul 14, 2011 |
4.9 / 5 (15) |
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Mathematician credited with solving one of combinatorial geometry's most challenging problems
(PhysOrg.com) -- A mathematician in the Indiana University College of Arts and Sciences is being credited with resolving a 65-year-old problem in combinatorial geometry that sought to determine the minimum number of distinct ...
Feb 25, 2011 |
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Flapping micro air vehicles inspired by swifts
Scientists have designed a micro aircraft that will be able to flap, glide and hover like a bird.
Jul 02, 2011 |
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'Fool's Gold' from the deep is fertilizer for ocean life
Similar to humans, the bacteria and tiny plants living in the ocean need iron for energy and growth. But their situation is quite different from ours--for one, they can't turn to natural iron sources like ...
Space & Earth / Earth Sciences
May 09, 2011 |
5 / 5 (8) |
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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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Americans who believe in equality are more likely to buy on impulse
A new study from Rice University's Jones Graduate School of Business finds that Americans who believe in equality are more-impulsive shoppers. And it has implications for how to market products differently ...
Other Sciences / Social Sciences
Oct 20, 2009 |
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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.
