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Radiometric Dating Equation Clarification

  1. Jan 11, 2006 #1
    Hey guys,

    I'm doing this assignment where I'm supposed to come up with an equation that models a certain collection of data. I have 40 sets of points and when graphed, they obviously show exponential decay. Now I've done a bit of research on this topic and the Equation used to calculate the number of particles left is y=A*2^(-x/halflife) where:

    y is the number of particles left
    A is the initial number of particles
    x is time and it increments

    Now i've been trying to come up with this equation by using a general exponential equation and solving for constants. My general equation is y=A*B^kx where A, B, and k are constants.

    Am i approaching this problem correctly? My task is to somehow come up with the correct equation which incorporates halflife. I want to somehow prove that the real model for the data is y=A*2^(-x/halflife) which i know is the correct model. How can i go about proving this?

    Here is a bit more information about decay and the above equation is there:

  2. jcsd
  3. Jan 11, 2006 #2
  4. Jan 11, 2006 #3
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