säteilynlähteet

Säteilynlähteet refers to sources of radiation. Radiation is energy that travels through space or a medium in the form of waves or particles. These sources can be categorized into natural and artificial.

Natural sources of radiation are all around us and have always been present on Earth. These include cosmic radiation originating from outer space, such as from the sun and distant stars, and terrestrial radiation, which comes from radioactive elements naturally present in the Earth's crust, like uranium and thorium. We also ingest and inhale naturally occurring radioactive isotopes, contributing to internal radiation exposure.

Artificial sources of radiation are created by human activities. These are often used in medical applications, such as X-ray machines, CT scanners, and radiotherapy equipment, for diagnosis and treatment. Nuclear power plants generate radiation during the process of nuclear fission, and nuclear weapons testing also releases significant amounts of radiation. Other artificial sources include certain consumer products and industrial applications that utilize radioactive materials. Understanding the different types and origins of säteilynlähteet is crucial for assessing radiation exposure and implementing appropriate safety measures.