And then either later in this video or in future videos we'll talk about how it's actually used to date things, how we use it actually figure out that that bone is 12, years old, or that person died 18, years ago, whatever it might be. You can't just say all the carbon's on the left are going to decay and all the carbon's on the right aren't going to decay in that 5, years. If the amount of carbon 14 is halved every 5, years, it will not take very long to reach an amount that is too small to analyze. It would be a pretty reasonable estimate to say, well, that thing must be 5, years old. And there's even a few electrons. Modeling the decay of 14 C. It makes its way into oceans-- it's already in the air, but it completely mixes through the whole atmosphere-- and the air.
Note that the purpose of this task is algebraic in nature -- closely related tasks exist which approach similar problems from numerical or graphical stances.
Carbon 14 dating
Ben Eastaugh and Chris Sternal-Johnson. And I'll write nitrogen. So then you have the Earth's atmosphere right over here. We can also now work out the expected mean time that an atom will exist before it decays. You can't just say all the carbon's on the left are going to decay and all the carbon's on the right aren't going to decay in that 5, years. And it can gain an electron some ways.