Consumer & Gadgets
Samsung at CES showed its ball-shaped rolling robot that follows you around, beeps and performs tasks as your personal assistant. The company posted a video showing just how Ballie would help out in your home.
Jan 12, 2020 weblog
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Engineering
A team of researchers from China and the U.S. has built a smart, self-powered ping-pong table. In their paper published in the journal Nature Communications, the group describes how the table was built and how it powers itself.
Nov 27, 2019 report
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Engineering
(Tech Xplore)—Scooter fans like the feeling of skating, sliding, gliding through life at least for a few minutes when feeling like masters of the universe. Scooters are not for everyone, though, but a new one being offered ...
Apr 16, 2017 weblog
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Robotics
Researchers University of California, Berkeley (UC Berkeley), Université de Montréal and Mila have recently developed a hierarchical reinforcement learning framework to improve the precision of quadrupedal robots in soccer ...
Aug 22, 2022 feature
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73
Robotics
A team of researchers affiliated with multiple institutions in China and one in Korea has developed a micro-robot system that regenerated knee cartilage in rabbits. In their paper published in the journal Science Advances, ...
Jan 29, 2020 report
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682
Robotics
Researchers at Paderborn University in Germany have built a robot that can knock a ball into a hole using a club on a putting green on most attempts. Annika Junker, Niklas Fittkau, Julia Timmermann and Ansgar Trächtler have ...
Nov 28, 2022 report
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94
Robotics
50 years ago, the first industrial robot arm called Unimate assembled a simple breakfast of toast, coffee, and champagne. While it might have looked like a seamless feat, every movement and placement was coded with careful ...
Mar 15, 2019
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Robotics
The pros make it look easy, but making a movie with a drone can be anything but.
Jun 3, 2021
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Energy & Green Tech
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
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Hi Tech & Innovation
So after the coronavirus threat has passed, you head downtown for a baseball game.
Aug 27, 2020
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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
