Engineering, 28.02.2020 00:20 zalayjahan4793
Over 50 cases of human cataract induction have been attributed to microwave exposures, primarily encountered in occupational situations involving acute exposure to presumably relatively high-intensity fields. The following are three reported incidents of cataracts caused by microwave radiation:
(a) A 22-year-old technician exposed approximately five times a 3 GHz radiation at an estimated average power density of 300 mW/cm2 for 3 min/exposure developed bilateral cataracts.
(b) A person was exposed to microwaves for durations of approximately 50 hr/month over 4- year period at average power densities of less than 10 mW/cm2 in most instances, but with a period of 6 months or more during which the average power density was approximately 1 mW/cm2.
Answers: 2
Engineering, 03.07.2019 15:10
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Engineering, 04.07.2019 18:10
Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?
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Engineering, 04.07.2019 18:10
Courses that are developed by subject matter experts, internal or extemal to the college or university. these programs are marketed by the school (clo2) marks a)-vocational schools b)-vendor training c)-colleges & universities d)-continuing education programs
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Engineering, 04.07.2019 18:20
Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?
Answers: 3
Over 50 cases of human cataract induction have been attributed to microwave exposures, primarily enc...
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