Hi,(adsbygoogle = window.adsbygoogle || []).push({});

I'm new to the forum and came here because I could use some help.

At the moment I am really confused because I know that A = DecayConstant * N, where A is activity and N is the number of atoms before decay. Isn't the Activity is how many atoms decay after 1 second with a specific value of N? Soif the DecayConstant = 0.5, N will half each second.

So I figured if the DecayConstant is 0.5 then the half life (T1/2) is 1 second. But then I realized that contradicts the following equation:

DecayConstant = ln(2) / T1/2, if T1/2 = 1 then DecayConstant = ln(2) =/= 0.5

What have I done wrong and why isn't any of this making sense? Did I make a basic error or do I have poor understanding?

Thank you for reading and helping.

**Physics Forums - The Fusion of Science and Community**

# Help With Half Life

Know someone interested in this topic? Share a link to this question via email,
Google+,
Twitter, or
Facebook

- Similar discussions for: Help With Half Life

Loading...

**Physics Forums - The Fusion of Science and Community**