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What causes radioactivity? ... How is radioactivity measured? ... Radioactivity is a physical, not a biological, phenomenon. Simply stated, the radioactivity of a sample can be measured by counting how many atoms are spontaneously decaying each second. This can be done with instruments designed to detect the particular type...
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www.hss.energy.gov/healthsafety/ohre/roadmap/achre/intr...
www.hss.energy.gov/healthsafety/ohre/roadmap/achre/intro_9_2.html
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Radioactivity is the spontaneous disintegration of atomic nuclei. The nucleus emits particles, ß particles, or electromagnetic rays during this process. ... Ionizing radiation causes physical damage to cells and DNA. Ionizing radiation has energy that results in the formation of excited molecules. This radiation can...
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library.thinkquest.org/17940/texts/radioactivity/radioa...
library.thinkquest.org/17940/texts/radioactivity/radioactivity.html
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In other words what causes them to undergo radioactive decay? ... That leads to natural radioactivity. It is also possible to make stable nuclei radioactive (artificial radio activity) by introducing instability , by adding energy in the form of addition of particle like neutrons.
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answers.yahoo.com/question/index?qid=20091115050007AAPT...
answers.yahoo.com/question/index?qid=20091115050007AAPTC9J
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There was recently a cat on tv which was radioacti ... There was recently a cat on tv which was radioactive. I also saw on an internet site a donkey had eaten radioactive gurkins and had to be isolated. What causes this? ... there are some atoms which are radioactive ; An example is K (very low radioactivity, but still small)
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answers.yahoo.com/question/index?qid=20090101074251AAVj...
answers.yahoo.com/question/index?qid=20090101074251AAVjrKl
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I. Radioactivity = spontaneous breakdown of an atoms nucleus ... 1. Henri Becquerel = discovered radioactivity in 1896 ... with her husband Pierre, tried to find what inside the pitchblende ore was making so much radioactivity...
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www.largo-hs.pinellas.k12.fl.us/Chapman/radioactivity_n...
www.largo-hs.pinellas.k12.fl.us/Chapman/radioactivity_notes.htm
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I understand Jupiter is not dense enough to walk around on, and that it has a deadly radioactivity about it. That doesn't seem reasonable to me, because it's too far from the Sun. How do you account for this? Is the radioactivity stable, or does it fluctuate?
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imagine.gsfc.nasa.gov/docs/ask_astro/answers/960821b.ht...
imagine.gsfc.nasa.gov/docs/ask_astro/answers/960821b.html
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Previous studies indicate that there is no conclusive evidence that people living in places with natural radioactivity are at a higher risk for cancer and other health-related problems.
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www.genomenewsnetwork.org/articles/10_02/natural_radio....
www.genomenewsnetwork.org/articles/10_02/natural_radio.shtml
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Low Level Radioactivity and Cancer ... Most of these claims suffer from a fatal weakness, and that weakness is that there is almost no radioactivity in the environment from nuclear power plants and similar facilities. Nuclear installations are relatively clean installations when judged by any reasonable standard.
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www.ntanet.net/cancer.html
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Nuclear Accident Spreads Worry (November 10, 2004) ... Map shows extent of fallout of radioactive material across Europe in the three days after the Chernobyl nuclear accident in 1986. Areas in red got the most radiation, while areas in yellow got the least. Russian officials say no radiation ... Radioactivity Journal Entry...
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www.phschool.com/science/planetdiary/archive04/radi1111...
www.phschool.com/science/planetdiary/archive04/radi1111304.html
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