Frontpage » Tag » ball

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, ...

Biology / Plants & Animals

created Jan 18, 2012 | popularity not rated yet | comments 0

'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

created Dec 22, 2011 | popularity 4.2 / 5 (31) | comments 54

'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 ...

Medicine & Health / Health

created Nov 29, 2011 | popularity 1 / 5 (1) | comments 0

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 ...

Space & Earth / Environment

created Sep 20, 2011 | popularity 5 / 5 (3) | comments 3

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 ...

Biology / Plants & Animals

created Aug 10, 2011 | popularity not rated yet | comments 0

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 ...

Chemistry / Materials Science

created Mar 30, 2011 | popularity 4.7 / 5 (3) | comments 3 | with audio podcast

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).

Electronics / Robotics

created Jan 09, 2011 | popularity 3.2 / 5 (11) | comments 21

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.

Physics / General Physics

created Dec 02, 2010 | popularity 4.4 / 5 (13) | comments 17 | with audio podcast report

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

created Dec 02, 2010 | popularity not rated yet | comments 2 | with audio podcast

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 ...

Physics / General Physics

created Sep 02, 2010 | popularity 4 / 5 (11) | comments 6 | with audio podcast

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 ...

Space & Earth / Environment

created Jul 06, 2010 | popularity not rated yet | comments 0

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.

Physics / General Physics

created Jul 01, 2010 | popularity 2.5 / 5 (11) | comments 0

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.

Other Sciences / Other

created Jun 29, 2010 | popularity 4.2 / 5 (17) | comments 7

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 ...

Physics / General Physics

created Jun 25, 2010 | popularity 4.2 / 5 (17) | comments 0 | with audio podcast

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.

Physics / General Physics

created Jun 08, 2010 | popularity 4.4 / 5 (8) | comments 5 | with audio podcast

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.