News tagged with ball
Dung beetle dance provides crucial navigation cues
(PhysOrg.com) -- The dung beetle dance, performed as the dung beetle moves away from the dung pile with his precious dung ball, is a mechanism to maintain the desired straight-line departure from the pile, ...
Jan 18, 2012 |
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'Space ball' drops on Namibia
A large metallic ball fell out of the sky on a remote grassland in Namibia, prompting baffled authorities to contact NASA and the European space agency.
Space & Earth / Space Exploration
Dec 22, 2011 |
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'Heading' a soccer ball could lead to brain injury
Using diffusion tensor imaging (DTI) to study the effects of soccer 'heading,' researchers have found that players who head the ball with high frequency have brain abnormalities similar to those found in traumatic brain injury ...
Nov 29, 2011 |
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BP oil not degrading on Gulf floor, study says
(AP) -- Tar balls washed onto Gulf of Mexico beaches by Tropical Storm Lee earlier this month show that oil left over from last year's BP spill isn't breaking down as quickly as some scientists thought it would, university ...
Sep 20, 2011 |
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Divot resistance in golf course turfgrass
Golf courses, known for their calm scenic views and precise grass patterns, take daily abuse. Divots created by golf strokes are a common occurrence, and can be a costly problem for golf course maintenance operations. Although ...
Aug 10, 2011 |
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Researchers use lobster shells to create biodegradable golf ball
Golfers on the high seas can breathe a little easier -- and so can the marine life around them -- thanks to researchers at the University of Maine. In conjunction with The Lobster Institute, UMaine Biological ...
Mar 30, 2011 |
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Robotic ball a hit at electronics show (w/ Video)
A glowing robotic ball that is controlled by a smartphone has won fans and the interest of game developers at the Consumer Electronics Show (CES).
Jan 09, 2011 |
3.2 / 5 (11) |
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Some UFOs may be explained as ball lighting
(PhysOrg.com) -- An Australian scientist studying photographs of fireballs, UFO sightings and a report of a strange green light in the sky suggests some UFOs may be ball lightning caused by fireball meteors.
Study: Rough match can sideline tennis players' perceptions
Tennis players who "ace" a match are more likely to see the ball as moving slowly and view the net as lower to the ground, according to new research from Purdue University.
Medicine & Health / Psychology & Psychiatry
Dec 02, 2010 |
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Carlos '97 free kick no fluke, say French physicists
Roberto Carlos' free kick goal against France in 1997's Tournoi de France is thought by many to have been the most skilful free kick goal - from 35m with a powerful curling banana trajectory - ever scored; but by others to ...
Sep 02, 2010 |
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Tar balls hit Texas as oil spill cost soars
Tar balls from the Gulf of Mexico spill have turned up on the Texas coast, expanding the oil slick's impact to all five Gulf states, officials said late Monday, as BP's disaster costs soared above three billion ...
Jul 06, 2010 |
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Study explains science of soccer
With the attention of sports fans worldwide focused on South Africa and the 2010 FIFA World Cup, U.S. scientist John Eric Goff has made the aerodynamics of the soccer ball a focus of his research.
Jul 01, 2010 |
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Jabulani ball 'too perfect' to fly straight - scientists
When it comes to the World Cup Jabulani football, perfect may not be good enough, according to scientists who have analysed the controversial ball.
Jun 29, 2010 |
4.2 / 5 (17) |
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Caltech Scientists Test Air Flow Over the 2010 World Cup Soccer Ball (w/ Video)
(PhysOrg.com) -- The World Cup is in full swing, complete with an official new soccer ball named Jabulani, meaning "to celebrate" in Zulu. The players, however, aren't exactly celebrating. Instead, many of ...
Jun 25, 2010 |
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Researchers Use Wind Tunnels to Test New World Cup Ball
Every four years, a new official soccer ball is designed for and used during World Cup matches. And every four years, players criticize the new ball.
Jun 08, 2010 |
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Ball
A ball is a round, usually spherical but sometimes ovoid, object with various uses. It is used in ball games, where the play of the game follows the state of the ball as it is hit, kicked or thrown by players. Balls can also be used for simpler activities, such as catch, marbles and juggling. Balls made from hard-wearing materials are used in engineering applications to provide very low friction bearings, known as ball bearings. Black powder weapons use stone and metal balls as projectiles.
Although many types of balls are today made from rubber, this form was unknown outside the Americas until after the voyages of Columbus. The Spanish were the first Europeans to see bouncing rubber balls (albeit solid and not inflated) which were employed most notably in the Mesoamerican ballgame. Balls used in various sports in other parts of the world prior to Columbus were made from other materials such as animal bladders or skins, stuffed with various materials.
As balls are one of the most familiar spherical objects to humans, the word "ball" is used to refer to, or to describe, anything spherical or near-spherical.
For more information about Ball, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.