From e81f4917fff291a79c9c7836ea353ad7cbdf6a0b Mon Sep 17 00:00:00 2001 From: Dane Sabo Date: Tue, 27 Aug 2024 20:19:50 -0400 Subject: [PATCH] vault backup: 2024-08-27 20:19:50 --- .../2024-08-27 Introduction.md | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/302. NUCE 2100 - Fundamentals of Nuclear Engineering/2024-08-27 Introduction.md b/302. NUCE 2100 - Fundamentals of Nuclear Engineering/2024-08-27 Introduction.md index 4090b073f..1cee12940 100644 --- a/302. NUCE 2100 - Fundamentals of Nuclear Engineering/2024-08-27 Introduction.md +++ b/302. NUCE 2100 - Fundamentals of Nuclear Engineering/2024-08-27 Introduction.md @@ -132,4 +132,8 @@ $N$ is the number of nuclei present. these are functions of time. $$ A(t) = \lambda N(t) $$ $$N(t) = N(0) e^{-\lambda t}$$ Half life is a derivative of activity: -$$ t_{1/2} = \frac{0.693}{\lambda}$$ \ No newline at end of file + +$$ t_{1/2} = \frac{0.693}{\lambda}$$ +We can also talk about decay in terms of time instead of instances of decay +**Mean Lifetime:** +$$ \tau = \frac{1}{\lambda}$$