ASTR 101 Lecture 28: Radioactive Materials, The Age of the Solar System, Interior of Earth
16 Nov 2016
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Lecture 28 - radioactive materials, the age of the solar system, Patients ingest radioactive uid to track metabolic behaviour by gibing a strongly detectable signal for a while; we want it to die away so they don"t carry it in their body for a long time (short half-life) Radio-active isotope of iodine can be used to track tracking thyroid performance; can be used to track whether the iodine is being suitably absorbed and used by thyroid. Where to get radioactive iodine? making it to supply hospital for medical application; they have a short half life and so they can"t sit on a shelf for a long period of time. Intermediate half-life radioactive materials; used in carbon dating. We have a certain amount of radioactive carbon in our bodies all the time. Also in atmosphere and plants absorb it in forms of carbon dioxide. We get it from plants and animals. Used to archeological and anthological purposes; carbon dating.
