As we all know, our most important source of visible light is the sun. Those of us who have stayed out in the sunlight on a bright summer's day a little bit too long also know that solar radiation ...

This activity is part of the Science Friday Sun Camp collection! The Sun is undoubtedly the powerhouse of the solar system. It’s been generating energy for 4.5 billion years, and it will continue to ...

One of the landmark discoveries of 19 th century physics was the realisation that electricity, magnetism and light are all connected. Experiments had already shown that the movement of electrical ...