N21 determining the Half-life of thoron Objective: To determine and investigate the half life of thoron Theory: The decay process of radioactive materials can be described by an exponential law. The equation is: N(t)=N0e -£ft Where £f is the decay constant for the individual nuclei. N0 is the number of unstable nuclei at time t=0. t is time Every radioactive nucleus has a definite time interval T1/2. That is the half-life. …showed first 75 words of 545 total…

…showed last 75 words of 545 total…head of the wire, in order to prevent the possibility of the poor connection of the wire. The error cause by random nature of the radiation is unpreventable. For reducing the human error using graph with small division can reduce the error caused by human eyes. Conclusion: The half life found in the experiment was (56.79¡Ó0.64)s. The result was near to actual half life of thoron. This was because the error sources contained during experiment.