HYDROAERATION TECHNOLOGY BY INTEX -– Transforming the Above Ground Pool industry, by bringing revolutionary water aeration benefits such as improved circulation and filtration, improved water ...

Do you play pool? If so, you probably take the automatic ball return systems in bar and billiard hall tables for granted. [Roger Makes] was tired of walking around his home table to collect the ...

Dynamical systems which are researched in Teichmueller dynamics include polygonal mathematical billiards. Here, analogously to an actual game of billiards, mathematicians study a ball travelling ...