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  1. Radiation - World Health Organization (WHO)

    Jul 10, 2024 · Ionizing radiation is a type of energy released by atoms that travels in the form of electromagnetic waves (gamma or X-rays) or particles (neutrons, beta or alpha). Ionizing radiation …

  2. Radiation: Ionizing radiation - World Health Organization (WHO)

    Oct 26, 2020 · Energy emitted from a source is generally referred to as radiation. Examples include heat or light from the sun, microwaves from an oven, X rays from an X-ray tube and gamma rays from …

  3. Radiation and health

    Jul 7, 2023 · Radiation is the emission of energy as electromagnetic waves or moving subatomic particles. Natural radiation comes from many naturally occurring radioactive materials found in soil, …

  4. Ionizing radiation and health effects

    Jul 27, 2023 · WHO fact sheet on ionizing radiation, health effects and protective measures: includes key facts, definition, sources, type of exposure, health effects, nuclear emergencies, WHO response.

  5. Ultraviolet radiation - World Health Organization (WHO)

    Jul 24, 2025 · Ultraviolet (UV) radiation covers the wavelength range of 100–400 nm, which is a higher frequency and lower wavelength than visible light. UV radiation comes naturally from the sun, but it …

  6. Electromagnetic fields - World Health Organization (WHO)

    Jan 27, 2023 · Electromagnetic radiation has been around since the birth of the universe; light is its most familiar form. Electric and magnetic fields are part of the spectrum of electromagnetic radiation which …

  7. Radiation: Electromagnetic fields

    Aug 4, 2016 · Radiation: Electromagnetic fields 4 August 2016 | Questions and answersWhat are electromagnetic fields and where do they come from?

  8. Radiation: The ultraviolet (UV) index

    Jun 20, 2022 · What is the UV index? a measure of the level of UV radiation; the values of the index range from zero upward - the higher the UVI, the greater the potential for damage to the skin and …

  9. Exposure to radiation - World Health Organization (WHO)

    Exposure to radiation Ionizing (x-rays, radionuclides) and non-ionizing radiation (UV, lasers) exposure may occur in health-care settings and pose specific risk to the health and safety of health workers.

  10. Health products policy and standards

    PPE protects healthcare workers from two main hazards: Radiation (Enhancing radiation safety in health care) Biological agents (virus, bacteria, etc.) Biological agents transfer from person to person by …