Non-Ionizing Radiation
Non-ionizing radiation refers to any type of electromagnetic radiation that does not carry enough energy to ionize atoms or molecules- that is, to completely remove an electron from an atom or molecule. Non-ionizing radiation is essential to life, but excessive exposures will cause tissue damage.
Non-ionizing radiation includes the spectrum of infrared (IR), microwave (MW), radio frequency (RF), and extremely low frequency (ELF) and ultraviolet (UV).
Lasers commonly operate in the UV, visible, and IR frequencies.
Non-ionizing radiation is found in a wide range of occupational settings and can pose a considerable health risk to potentially exposed workers if not properly controlled, including skin cancer, eye damage, premature skin aging, and burns.
Workers performing welding and cutting are routinely exposed to the ultraviolet (UV) radiation given off by an arc or flame which can injure their eyes. For protection from this UV radiation, welders must use personal protective equipment, such as safety glasses, goggles, welding helmets, or welding face shields.
Knowledge Check Choose the best answer for the question.
2-10. Which of the following describes non-ionizing radiation?
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