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Radiation Effects On Humans

Radiation Effects On Humans. By: Vanessa Madera & Chandra Worley. Outline. House Hold Appliances Benefits/Dangers R.E.M.s Types of Radiation Risks of Low-Level Radiation Additional Cancer Deaths Per 10,000 Persons References Conclusion Any Questions. House Hold Appliances.

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Radiation Effects On Humans

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  1. Radiation Effects On Humans By: Vanessa Madera & Chandra Worley

  2. Outline • House Hold Appliances • Benefits/Dangers • R.E.M.s • Types of Radiation • Risks of Low-Level Radiation • Additional Cancer Deaths Per 10,000 Persons • References • Conclusion • Any Questions

  3. House Hold Appliances • Most common amps: 200-400 • Electricity supply: 110-120 volts • Nominal Values: 127 volts

  4. House Hold Appliances Cont… • Homes have a three wire service • Two hot wires, one neutral wire • Circuit connected to one hot wire: 120 volts • If connected to two hot wires: 240 volts

  5. Benefits/Dangers • Cosmic radiation: 3x’s stronger @ an altitude of 3,048 m (10,000 ft) than at sea level by 20%

  6. Benefits/Dangers Cont… • 90% of radiation exposure from man-made sources in U.S.: medical and dental x-rays • Other 10%: nuclear weapon testing, nuclear power productions, radios, luminous dial watches, and color T.V.s

  7. R.E.M.: radiation equivalent man, measure of biological effectiveness In U.S. cosmic radiation doses: 38-75 millirems Average whole body doses from natural radiation: at least 0.1 rem per year “Average…”: about seven rems per lifetime R.E.M.s

  8. Types Of Radiation • Two main types of radiation • Cosmic radiation: comes from outer space • Terrestrial radiation: comes from radioactive materials i.e. uranium & thorium from inside of the earth

  9. Risks of Low-Level radiation

  10. Additional cancer deaths per 10,000 persons

  11. Conclusions • Two types of radiation • 90% of radiation comes from x-rays • Radiation is measured in R.E.M.s • Homes have a three wire system

  12. THE END • ANY QUESTIONS

  13. References Dinah Moche, 1979, radiation:benfits/dangers, 83 pgs, Franklin watts, new york/london/toronto. Physics matters electric current, ser., volume 7, scholastics, New York. Physics matters electric charges, ser., volume 6, scholastics, New York. Edwards, R., Risks from low-level radiation reassessed,http://www.newscientist.com/article.ns?id=dn6550, Accessed June 5, 2006. Kohnlein, W., Risks Estimates of Low-Level Radiation, http://www.foe.arc.net.au/kohnlein/kohnpaper.html, Accessed June 5, 2006

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