The rontgen or roentgen (R) is a unit of measurement of ionizing radiation in air, either X or gamma rays. It is named after the German physicist Wilhelm Rontgen. A roentgen is the amount of radiation required to liberate a pair of positive and negative charges from atoms of one electrostatic unit of charge in […]
What Would The Annual Radiation Dose Rate Be For An Astronaut Left In The Mir Space Station For A Year?
Mir isn’t in orbit anymore, it was decommissioned and burned up in the atmosphere in March, 2001. An astronaut, whether in Mir or in the new International Space Station (ISS) receives about 1 millisievert/day (mSv/day) or 0.365 Sv/yr. Normal overall radiation dose for someone on earth is about 3.5 mSV/year. 4 Sv kills most people, […]
How Many Radiations Are Required For Radiotherapy Treatment. Various Doctors Give Different Doses Like 28 Days?
some doctors give 28, others 30 still others 33..What is the criteria for giving different doses and what is the minimum doses required. urgent reply please?
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