In one year, a heavy smoker’s lungs are thought to absorb about 20 rem from polonium (a daughter isotope of the radioactive lead in tobacco smoke).
- How many years of high altitude flight is this equivalent to? (1 pt)
- Assuming that the above number is based on 2 packs a day for a year, and each pack contains 25 cigarettes, how many hours of high altitude flight is the radiation from a single cigarette equivalent to? (2 pts)
- Express your answer to b in “banana equivalent units”. (1 pt)
100 rem = 1 Sv
1,000,000 µSv = 1 Sv
1000 mRem = 1 Rem
1 hour flying = .238 mRem of cosmic radiation exposure
1 banana equivalent unit = 0.1 microsieverts.