What is the Principle of Radiometric Dating?
Radioactive decay is described in terms of the probability that a constituent particle of the nucleus of an atom will escape through the potential (Energy) barrier which bonds them to the nucleus. The energies involved are so large, and the nucleus is so small that physical conditions in the Earth (i.e. T and P) cannot affect the rate of decay.
The rate of decay or rate of change of the number N of particles is proportional to the number present at any time, i.e.
dN/dt ∝ N
Note that dN/dt must be negative.
The proportionality constant is λ, the decay constant. So, we can write
dN/dt= -λN
On intergrating both sides followed by taking ln on both sides,
ln(N/No) = -λ(t - to)
At to=0,
N= Noe-λt
How to Calculate Determination of Age of Minerals and Rocks using Rubidium-87/ Strontium Method?
Determination of Age of Minerals and Rocks using Rubidium-87/ Strontium Method calculator uses Time taken = 1/Decay Constant for Rb-87 to Sr-87*((Ratio of Sr-87/Sr-86 at Time t-Initial Ratio of Sr-87/Sr-86)/Ratio of Rb-87/Sr-86 at Time t) to calculate the Time taken, The Determination of Age of Minerals and Rocks using Rubidium-87/ Strontium Method formula is defined as the method in which one can determine the age of a mineral or rock containing Rubidium-87. Time taken is denoted by t symbol.
How to calculate Determination of Age of Minerals and Rocks using Rubidium-87/ Strontium Method using this online calculator? To use this online calculator for Determination of Age of Minerals and Rocks using Rubidium-87/ Strontium Method, enter Decay Constant for Rb-87 to Sr-87 (λ), Ratio of Sr-87/Sr-86 at Time t (RSr-87:Sr-86), Initial Ratio of Sr-87/Sr-86 (R°Sr-87:Sr-86) & Ratio of Rb-87/Sr-86 at Time t (RRb-87:Sr-86) and hit the calculate button. Here is how the Determination of Age of Minerals and Rocks using Rubidium-87/ Strontium Method calculation can be explained with given input values -> 1338.961 = 1/4.49980086796722E-19*((0.7025-0.701)/0.0025).