Non-ionizing Radiation

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Non-ionizing Radiation www.assignmentpoint.com

Non-ionizing Radiation Definition: “ They are electromagnetic waves incapable of producing ions while passing through matter, due to their lower energy.” www.assignmentpoint.com

All earth surface system components emit radiation---the sun and the earth are the components we are most interested in The sun emits radiation composed of high energy infrared radiation, visible light, and ultraviolet radiation collectively known as shortwave radiation (SW) The earth emits radiation composed of lower energy infrared radiation collectively known as long-wave radiation (LW) www.assignmentpoint.com

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Path of incoming solar radiation www.assignmentpoint.com

Albedo: a measure of how well a surface reflects insolation www.assignmentpoint.com

Examples on Non-ionizing Radiation Sources MICROWAVE GAMMA ULTRA V VISIBLE INFRARED TV AM RF Visible light Microwaves Radios Video Display Terminals Power lines Radiofrequency Diathermy (Physical Therapy) Lasers www.assignmentpoint.com

Other Manmade Sources of Non-Ionizing Radiation www.assignmentpoint.com

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Effects Radiofrequency Ranges (10 kHz to 300 GHz) Effects only possible at ten times the permissible exposure limit Heating of the body (thermal effect) Cataracts Some studies show effects of teratoginicity and carcinogenicity. www.assignmentpoint.com