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[http://herschel.jpl.nasa.gov/images/EM_Spectrum-Graphic_new_550.jpg]. Types of Radiation. Non-Ionizing radiation is low energy and does not change atoms. Examples: Light, Radio Waves, Microwaves. Types of Radiation.

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  1. [http://herschel.jpl.nasa.gov/images/EM_Spectrum-Graphic_new_550.jpg][http://herschel.jpl.nasa.gov/images/EM_Spectrum-Graphic_new_550.jpg]

  2. Types of Radiation • Non-Ionizing radiation is low energy and does not change atoms. • Examples: Light, Radio Waves, Microwaves.

  3. Types of Radiation • Ionizing radiation has high energy and can remove electrons from other atoms. • Examples: X-Rays and Gamma Rays

  4. [http://www.epa.gov/radiation/graphics/spectrum_right.jpg] Click here for the EPA descriptions of types of radiation.

  5. Nuclear Physics • The nucleus of an atom is held together by the strong force. [http://www.lbl.gov/abc/wallchart/chapters/01/graphics/nucleus.jpg]

  6. Nuclear Physics • When the strong force fails, p+ or n can escape, and the atom is radioactive. [http://www.nmsu.edu/~safety/images/signs/symbol_radiation_lg1.gif]

  7. Radiation & Health • The amount of radiation a person receives in a year can be measured in rems. • (Roentgen Equivalent Man) • 1 rem = 1000 mrem (millirem)

  8. Radiation & Health • Stochastic (long term) exposure to radiation can include health effects such as DNA mutation & Cancer • Average US citizen receives 360 mrem per year. (0.36 rem) • EPA guidelines allow for 5000 mrem per year if working around radiation as a job. (5 rem)

  9. Radiation & Health • Non-Stochastic (short term) exposure can include health effects that lead to massive cell death and “radiation sickness” [http://wps.prenhall.com/wps/media/objects/602/616516/Media_Assets/Chapter22/Text_Images/FG22_TB05.JPG] Click here for EPA descriptions of health limits

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