säteilynlähde
Säteilynlähde refers to any object or phenomenon that emits radiation. This radiation can take many forms, including electromagnetic waves such as light, radio waves, X-rays, and gamma rays, as well as particle radiation like alpha particles, beta particles, and neutrons. The nature of the radiation emitted depends on the source.
Natural säteilynlähteitä are prevalent in the environment. The sun is a primary example, emitting vast amounts
Artificial säteilynlähteitä are created by human activities. These include medical applications like X-ray machines and radiotherapy