An ant is inching along a rope at one centimeter per second. The rope is made of rubber, and being stretched at a rate of kilometer per second. Will the ant ever reach the end? Here’s a paradox for ...

A look at the illustrations of Lo Koon-chiu, including Rubber-band Rope Skipping (right), through the children's comic book. Daily, 10am-6pm, (Sun and public holidays until 7pm), closed Tue, HK ...

Braces can help to treat a variety of conditions that impact your teeth and jaw. They use force to help move your teeth and jaw into new positions. This force is applied by an archwire that runs ...