1. Health, Safety and Environment www.hse.ubc.ca

2. Historical Review RADIATION BASICS 101

3. The Story so far: In the beginning the Universe was created. This has made a lot of people very angry and been widely regarded as a bad move… -D. Adams -

7. W.C. Röntgen W.C. Röntgen 1895 1895 x-rays x-rays NOBEL PRIZE l901 ‘man-made’ radiation

9. A.H. Becquerel 1896 “radioactivity” “radioactivity” Naturally occurring radiation

10. Marie Curie 1867-1934 Pierre Curie 1859-1906 NOBEL PRIZE l903

11. Albert Einstein 1905 Albert Einstein 1905 Theory of relativity E=mc 2 E=mc 2 NOBEL PRIZE l921

12. Ernest Rutherford Nobel Prize in Chemistry 1908 Rutherford model of atom: charged nucleus with orbiting electrons. *Introduced much of language describing concepts of the atom and radioactivity: alpha particle, beta particle, proton, neutron. *Elements became different elements through radioactive decay! Transmutation! Realm of alchemy!!

13. N. Bohr 1913 Planetary model of the atom NOBEL PRIZE l922

14. Pathological effects –A.H. Becquerel - dermatitis 1901 –Thomas Edison – documented eye irritation –C. Dally - death 1904 –Arthritis patient dies 1912 - Ra-224 Quackery –radioactive health waters –criminal tendencies –blindness

16. Dose: 2mSv/h; inventor died of bladder cancer, age 61

17. Questions 1.Who discovered X-Rays? ________________ 2.Who was awarded the Nobel prize twice for their work on radioactive materials? _______________ 3.Which Canadian introduced much of the terminology used to describe radioactivity and atomic structure? _________________