Radiation is everywhere; living on this planet means being exposed to natural radiation. Artificial radiation has been used successfully in the last centuries for medical diagnosis and treatment of ...

The electromagnetic spectrum, or EM spectrum, is the name given to the collection of all electromagnetic radiation in the universe. This is a type of energy that pervades the cosmos in the form of ...

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 ...