Thus, his noted carbon-14 result is that C production later in this chapter, but he does not deal with all of them.
Because as soon as you die and you get buried under the ground, there's no way for the carbon-14 to become part of your tissue anymore because you're not eating anything with new carbon-14. Radiocarbon dating - Wikipedia 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 12,000 years old, or that person died 18,000 years ago, whatever it might be.
So let me just draw the surface of the Earth like that.
Carbon-14 dating is used for (i) carbon-14 decays slowly in a living organism to nitrogen (half life 5730 years) (ii) amount of carbon-14 lost is continually replenished as long as the organism takes in air or food (however, once the organism dies, it ceases to absorb carbon-14).
Hence, it is a good way of determining the age of certain archaeological artifacts of biological origin (could be bone, fiber, wood, plant remnants etc.) up to about 50,000 years old.
On the surface, radiometric dating methods appear to give powerful support to the statement that life has existed on the earth for hundreds of millions, even billions, of years.
We are told that these methods are accurate to a few percent, and that there are many different methods.
So then you have the Earth's atmosphere right over here.
And 78%, the most abundant element in our atmosphere is nitrogen.
Carbon-14 has a half-life of 5,730 years, which is the amount of time that it takes for half of a given sample of carbon-14 to decay.