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Understanding Radiation: Components, Effects, and Control

Explore the world of radiation, discovering its components within atoms, difference from regular motion, and ionization effects. Learn about the stability of nuclei, blocking radiation absorption, and how radiation can impact living cells. Witness the glow of Radium and understand the importance of controlling radiation.

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Understanding Radiation: Components, Effects, and Control

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  1. Fear of RADIATION Ellen Corey

  2. 1945

  3. But Ma, I saw it in the movies!!!!

  4. All matter is in random motion and emits energy. What is the difference between regular motion and radiation?

  5. RADIATION components of an atom are discharged at: less than the speed of light, but lots faster than normal molecular speed (particles) at the speed of light (waves)

  6. C 12 6 Protons (+) need neutrons to hold them together Ra Zn 226 88 65 30 Lighter elements: # of protons = # of neutrons Heavier elements need more neutrons to offset repulsion of + protons U 238 92 A nucleus will rearrange its n:p ratio until it is stable - particles are emitted (radioactivity) Pu 244 94

  7. Radium It glows in the dark

  8. RADIATION particles have mass: protons, neutrons, electrons waves have zero mass: gamma rays

  9. Blocking radiation absorption

  10. RADIATION does its damage through IONIZATION

  11. A nucleus in search of electrons

  12. Electrons in search of a nucleus

  13. Gamma rays don’t search for anything, they just destroy as they zoom along

  14. H H GLYCINE—A SIMPLE AMINO ACID b+ g b- g a b- H O a g g b- b+ b- b+ C C OH N b- a a g b+ b- H g b+ a b+

  15. RADIATION destroys cells that reproduce quickly

  16. Fast moving particles and rays produce HEAT

  17. a b+ b- g a

  18. Kazakhstan, U.S.S.R. 40 Years of atmospheric nuclear explosions

  19. Accidents have global consequences

  20. Radium It glows in the dark

  21. CONTROL CONTROL CONTROL

  22. Radiation—a life saver

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