Radiocarbon dating is the method which is used to determine age of object that contains organic material by using properties of radiocarbon (¹⁴C).
The ¹⁴C in form of radioactive carbon dioxide formed in the atmosphere is incorporated into the plants by photosynthesis and also animals acquire ¹⁴C by eating these plants.
When a animal or a plant dies, they stops exchanging the carbon with environment and that point onward, the amount of ¹⁴C present in the body of them, begins to decrease as it undergoes radioactive decay.
<u>Measuring amount of ¹⁴C can be used to calculate when the animal or the plant died. Hence, it is used to determine the age of the material.</u>
They are defined as having a minimum orbital intersection distance with Earth of less than 0.05 astronomical units (19.5 lunar distances) and an absolute magnitude of 22 or brighter.
