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 ...

For simplicity, let's consider one of the waves describing either the electric or magnetic field displayed in Figure 3.1. This wave can be considered as a component of the more complex electromagnetic ...

Did you know that radiation was all around us? Or that lost radioactive sources were among the most common types of radiation emergencies? Get the facts about radiation and radiation emergencies by ...

Infrared radiation (IR), or infrared light, is a type of radiant energy that's invisible to human eyes but that we can feel as heat. All objects in the universe emit some level of IR radiation, but ...

Each body with a temperature higher than absolute zero (–273.15 °C = 0 Kelvin) releases electromagnetic radiation from the surface. This radiation is proportional to its intrinsic temperature. One ...

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 ...