EESA10H3 Lecture 6: cornell-style notes, lecture 6
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Notes: background radiation: naturally found in earth and outer space. 1: non-ionized radiation, can change atoms and strip away electrons, break some chemical bonds (e. g alpha, beta particles, gamma and x-ray) Stochastic health effects: long term: low level exposure difficult to detect. Increased exposure affects likely hood, but not type or severity of effect: cancer: uncontrolled growth of cells, which results in damage at cellular and molecular level, changes in dna: mutations: teratogenic = malformation of embryo and gentics. Non-stochastic health effects acute (severe or intense degree): short-term with high level of exposure, cancer and radiation sickness. Increase level of exposure = more severe effects. Microwave oven: form of electromagnetic radiation, absorbed by food, passes through glass, paper, plastic, reflected by metal, water molecules vibrate which creates heat, not radioactive or contaminated, cooks from outside. Immune response: animal research-genetic changes, lens of eye is sensitive, can cause cataracts, painful burn, temporary sterility www. notesolution. com.