Radiation
This is the main Radiation post. Start here!
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Here are some videos and powerpoint shows that I’ve made for the NPA but the outcomes are the same as those in N5 Physics. Thanks to John Sharkey for the use of the Virtual Flash Physics (Int 2) and to Julian Hamm of furryelephant for the animations of ionising an atom. Videos If you haven’t...
Read MoreUsing John Sharkey's Virtual Animations I complete the Half Life of Protactinium 234. The sound needs to be turned down after the first 60 s
Read MoreI hope that I am not breaking any rules, but these great resources no longer appear to be online. Can’t believe they are 20 years old! The first photos show the background count rate, a reading of counts taken over a 1 minute period. The source is then taken out at 9:00 am and a...
Read MoreHalf Life Half Life is the time for the activity to halve. Time for activity to (decrease by) half or time for half the nuclei to decay (It is measured in units of time, e.g seconds, minutes, days, years, millions of years!) Note the SQA do NOT accept: Time for radiation/radioactivity/ count rate to half From...
Read MoreHere are the results from the Protactinium Generator Experiment. Your task is to correct for background (take the background count per second away from the count rate) and then plot a graph of count rate (cps) against time (s). Remember the count rate was taken every 10 s but shows the value of the count...
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