INTO a hollow sphere of unit radius, with a curva-ture or bend, therefore, 1, put two solid spheres of radius, or bend + 2. The two solid spheres then kiss each other at the exact centre of the bowl, ...

Minimum height to loop the loop using conservation of energy. This video explains how gravitational potential energy converts into kinetic energy and why a precise starting height is required to ...

Farran Powell is the managing editor of investing at Forbes Advisor. She was previously the assistant managing editor of investing at U.S. News & World Report. Her work has appeared in numerous ...

Screen time isn't the only way to strain your eyes. You probably hold a book up close for long periods when you read it. Both activities can lead to nearsightedness, or myopia, which means faraway ...

Windows enthusiasts and users are often intrigued by PC cleanup, junk removal tools and utilities. What they typically do is help to "clean up" the system by removing temporary files and cache in ...

When Motorola introduced its first mobile phone in 1984, the company hoped for a buying frenzy. But even the best marketers couldn’t have predicted the success of mobile phones. Today, mobile phones ...