| 31. | The radioactive decay can be detected through an ionization chamber or autoradiographs of gels.
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| 32. | Alpha decay is much more easily shielded against than other forms of radioactive decay.
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| 33. | It is also possible that warmth from radioactive decay in the Earth warms it.
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| 34. | :The article on Volcanism doesn't say anything about radioactive decay.
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| 35. | The gold did contain radioactive decay products of 222 Rn.
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| 36. | It also is possible that warmth from radioactive decay in the Earth warms it.
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| 37. | The heat of radioactive decay comes mainly from the elements uranium, thorium and potassium.
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| 38. | The number of excited states N thus decays exponentially with time, similar to radioactive decay.
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| 39. | Polonium only occurs in trace amounts on earth, via radioactive decay of uranium and thorium.
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| 40. | Radon is formed as part of the normal radioactive decay chain of uranium and thorium.
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