At first glance, a tennis ball on the end of a trailer ball hitch looks like a random accessory, but it serves a surprisingly practical purpose. Tow balls are often greased to reduce friction when ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...

We may receive a commission on purchases made from links. Standard tow ball hitches come in numerous sizes, and the right one for you and your vehicle depends on what kind of towing you are looking to ...

Abstract: Vision-based methods for gesture analysis in sports can provide valuable insights to players and coaches, without any disturbing body-worn sensors. In table tennis, accurately predicting the ...

Pickleball got its start in the late 1960s in the Seattle area, and has exploded in popularity in the 2020s. Pickleball is often described as “tennis with a whiffle ball” and is often played on a ...

Charlie has an undergraduate degree in Forensic Psychology and writes on topics from zoology and psychology to herpetology.View full profile Charlie has an undergraduate degree in Forensic Psychology ...

Sending those rubber-cored balls to the landfill is just part of the environmental toll they take. Fortunately, there are more sustainable alternatives. Roughly 125 million tennis balls are trashed ...

Tennis has a fuzzy yellow problem most players don't think about when they open can after can of fresh balls, or when umpires at U.S. Open matches make their frequent requests for "new balls please." ...

Those spare tennis balls you have lying around in your shed or garage don’t have to collect dust when you’re not hitting the court. In fact, these fuzzy balls can be used for more than just playing ...