MCC-UE 1040 Lecture Notes - Lecture 13: Treaty On The Non-Proliferation Of Nuclear Weapons, Parotid Gland, Recall Bias

• School: New York University
• Department: Media, Culture & Communication
• Course: MCC-UE 1040
• Professor: phoungthao Le

Document Summary

Alpha (he+2) & beta (electrons or positrons) Radiation is a byproduct of the mass & energy of a particle. Disrupt atoms & molecules on which they pass through, giving rise to ions & free radicals. Nonionizing can excite the electron but not pull from orbit. 1 roentgen (r) = amount of radiation that produces ionization resulting in. 1 electrostatic unit of charge in 1 cm3 of dry air. Absorbed dose: rad (roentgen absorbed dose) = absorption of 100 ergs of energy from any radiation in 1 gram of any material. Biologically equivalent dose: rem (roentgen equivalent man) = dose in rads x. Key: know difference b/w exposure & absorbance in the body & where it gets in your body. Probability of an effect is proportional to dose (no threshold). Doubling dose for cancer is approximately 10-100 rems. Thyroid gland very susceptible to radiation - iodine. Doubling dose for mutation rate is approximately 50-80 rems. (spontaneous mutation rate is approx.