Since electromagnetism is so strong, multiple protons in the nucleus of any atom like Helium should repel each other very strongly. So how do they stay glued together?...Because of a force that is even stronger...

What food dyes are in your candy? Is black ink really black? What gives fall leaves their color? These are all questions that you can investigate using paper chromatography – a technique that can separate mixtures into their individual...

This program explores the many important uses of electricity. The nature of electricity and the formation of electric current are highlighted. Special attention is also paid to safety and electricity. Concepts and terminology include:...