[DaveMakesStuff] demonstrates a great technique for 3D printing a sphere ... [Dave]’s giant ball uses only 220 grams of filament. A video (also embedded below) shows the design in better ...

The original Telstar design actually predates 1974 ... As it’s not easy to produce a seamless leather sphere, balls were instead sewn together from individual leather panels in order to create ...

He called it an aeolipile, or "wind ball". His design was a sealed caldron of water was placed over a heat source. As the water boiled, steam rose into the pipes and into the hollow sphere. The steam ...

A compact drone equipped with a camera, the Russian spherical robot is made for intelligence purposes and can move on almost any surface, including water.