säteilylähteiltä

Säteilylähteiltä is a Finnish term that translates to "from radiation sources" or "radiation sources." It refers to the origin or point from which ionizing radiation is emitted. These sources can be natural or artificial. Natural radiation sources include cosmic rays from outer space and terrestrial sources such as radioactive elements present in the Earth's crust, like uranium and thorium. Radon gas, a decay product of uranium, is a significant natural source of indoor radiation.

Artificial radiation sources are man-made and are used in various applications, including medical diagnostics and treatments, industrial processes, and research. X-ray machines used in hospitals and dental clinics are common examples of artificial sources. Nuclear power plants utilize nuclear fission to generate electricity, and this process involves controlled nuclear reactions that produce radiation. Radioactive isotopes are also employed in industry for purposes like gauging thickness and sterilizing equipment. Furthermore, certain consumer products, such as smoke detectors and some older ceramic glazes, may contain small amounts of radioactive material.

Understanding the nature and origin of radiation sources is crucial for radiation safety. Proper shielding, distance, and time limitations are employed to minimize exposure to ionizing radiation from both natural and artificial sources. Monitoring and regulation of radiation sources are essential to protect public health and the environment. The study of radiation sources falls under the field of radiometry and radiation protection.