MHR 711 Lecture Notes - Lecture 1: Ear Protection, Job Rotation, Audiometer
2 Mar 2018
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Document Summary
Physical agents - sources of energy that may cause injury or disease. Examples include noise, vibration, radiation, and extremes in temperature and pressure. Each of these agents may be ambient or acute (i. e. , resulting from a single exposure) All-encompassing condition associated with a given environment. Composite of inputs from sources all around us. Electronic personal dosimeters allow workers to measure the levels of ionizing radiation they are exposed to. These two types of radiation are identified primarily by wavelength range and by their action on tissue. Gamma rays, alpha particles, beta particles, and neutrons (commonly found in nuclear operations or research companies) Electromagnetic radiation that does not have energies great enough to ionize matter (or to turn matter into ions: non-ionizing radiation is made up of photons, which are bundles of electromagnetic energy that travel at the speed of light. Sun can be a source of all these radiations.
