Sometime soon, your car will park itself in urban garages
So after the coronavirus threat has passed, you head downtown for a baseball game.
Aug 27, 2020
0
85
So after the coronavirus threat has passed, you head downtown for a baseball game.
Aug 27, 2020
0
85
Lithium metal-based batteries have the potential to turn the battery industry upside down. With the theoretically ultra-high capacity of lithium metal used by itself, this new type of battery could power everything from personal ...
Jan 18, 2018
3
78
Table tennis has been played for decades as a more accessible version of tennis. The sport is particularly beginner-friendly while maintaining a rich level of competitive play. However, like many sports, it remains inaccessible ...
Dec 5, 2023
0
35
Basketball players need lots of practice before they master the dribble, and it turns out that's true for computer-animated players as well. By using deep reinforcement learning, players in video basketball games can glean ...
Aug 7, 2018
0
34
An international research team has developed "electronic skin" sensors capable of mimicking the dynamic process of human motion. This work could help severely injured people, such as soldiers, regain the ability to control ...
Sep 21, 2020
0
67
A Tactile Internet is potentially the next phase of the Internet of Things, in which humans can touch and interact with remote or virtual objects while experiencing realistic haptic feedback.
Jan 23, 2020
0
141
Her eyes squint to sharpen her focus while her mouth curves into a smile and her fingers push down on the controller, sending a baseball flying through the air. For the past year, 14-year-old Emerson Allen has patiently waited ...
May 16, 2022
0
7
(Tech Xplore)—A little flying device is drawing attention in the media this month on two counts, the way it moves and what it can do, which is fetching a ball in a pouch.
New research by the University of Bath has used motion capture technology to assess the accuracy of Video Assistant Referee (VAR) technologies in football. The study suggests that VAR is useful for preventing obvious mistakes ...
Jul 20, 2022
0
11
Does your chihuahua crave a chinwag or the Yorkie want to yak, the greyhound needs to gossip and the corgi loves a chat?
Nov 17, 2021
1
9
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