Startling new evidence from medical investigators in New York suggests that "heading" a ball in soccer—in which players propel it with their heads—can lead to cognitive impairment in members of the sport who are endowed ...
The shot clock reads 5, and a win forces a game 7. Two hands outstretched as the players—one in royal blue and yellow, the other black—hurtle towards the edge of the court. The ball sails out of bounds, and the play ends. ...
Apr 24, 2019
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How do people assign a cause to events they witness? Some philosophers have suggested that people determine responsibility for a particular outcome by imagining what would have happened if a suspected cause had not intervened.
Oct 17, 2017
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The images are legendary: Tennis stars who hit the deciding match ball just outside the line, golfers who putt the ball past the cup from only inches away, and speakers who suddenly can't say a word. These individuals all ...
Mar 15, 2022
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A team of researchers affiliated with several institutions in Australia and the U.K. has taught a small mass of human brain cells to play the video game Pong. Their paper is available on the bioRxiv preprint server.
Researchers are revisiting an age-old question in baseball: Do batters actually keep their eye on the ball?
Aug 12, 2021
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Researchers from the Faculty of Health and Sport Sciences at the University of Tsukuba studied the way blind players and sighted non-athletes tracked an incoming noise-making ball. They found that blind players employed a ...
Nov 24, 2020
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The brain is permanently exposed to new impressions. Even when sleeping, it does not rest and processes recent experiences. In very early childhood, it has been thought that sleep primarily promotes semantic memory. This ...
Apr 7, 2020
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We feel that we live in the present. When we open our eyes, we perceive the outside world as it is right now. But we are actually living slightly in the past.
Mar 17, 2020
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Anyone who has ever tried to serve a tennis ball or flip a pancake or even play a video game knows, it is hard to perform the same motion over and over again. But don't beat yourself up—errors resulting from variability ...
Nov 8, 2019
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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.
This text uses material from Wikipedia, licensed under CC BY-SA
