The document discusses various topics related to nuclear technology including nuclear energy, fission, radiation, doses, and effects. It notes that nuclear technology is often misunderstood due to limited knowledge and biased media representations. While high doses of radiation can cause harm, the effects of low doses are unclear and some research has indicated potential health benefits of low radiation exposure.

1. Nuclear Technology & Us & Us JUS 394 Arizona State University Science, Technology & InEquality Professor: Merlyna Lim

3. Nuclear POWER

5. Energy plays an important part And it’s used in all this work; Energy, yest energy with power so great, A kind that cannot shirk. If the farmer had not this energy, He would be at a loss, But it’s sad to think, this energy Belongs to a little brown horse. A school verse by Richard Feynman a Nobel laureate for physics

14. Nuclear Technology & MEDIA Representation MEDIA Representation MEDIA Representation

17. Radiation As constructed in the Media in the Media in the Media

21. Other Nuclear News

24. Radon

28. RADIATION FICTIONS

38. Electromagnetic Radiation Gamma Rays γ X Rays Ultraviolet Light Visible Light Infrared (heat) radiation Radio Waves Frequency Photon Energy Wavelength

39. Radiation Particles - α β α , Helium-4 nucleus (radon is a source) β , nuclear electron ( 40 K is a source) orbital electron

40. Types and properties of ionizing radiation Types of radiation Gamma Ray X-ray Beta Particle (electron) Neutron Proton Alpha Relative mass & charge 0 0 0 0 0.0005 -/+ 1 1 0 1 +1 4 +2 Range in Soft Tissue centimeters centimeters millimeters centimeters microns microns

41. Radiation Effects in Living Tissues Nuclide decays Emitted radiation ionizes atom Free radicals created Cell/DNA attacked Cell killed or damaged dead cell ⇒ dead organ damaged cell ⇒ cancer(?) OH

42. Routes of Radiation Exposure Internal: α , β , γ , n External: α , β , γ , n

46. Radiation Effects Model Potential Damage to Health Linear Hypothesis 370 mrem 100,000 mrem Doses Causing Observed Adverse Health Effects Area of controversy Real data

49. Radiosensitivity of Species Least Sensitive Acute radiation dose, rads Micro- organisms Inverte- brates Plants Fish Amphibians Birds Mammals Humans 10 100 1,000 10,000 100,000 1,000,000 Most Sensitive