Carbon-14 dating is a way of determining the age of certain archeological artifacts of a biological origin up to about 50,000 years old.It is used in dating things such as bone, cloth, wood and plant fibers that were created in the relatively recent past by human activities.The same is true if you take a block away from one of the pyramid's sides, making the rest unstable.
Think of the nucleus as a pyramid of building blocks.
If you try to add extra blocks to the sides pyramid, they may stay put for a while, but they'll eventually fall away.
When paleontologist Mary Schweitzer found soft tissue in a Tyrannosaurus rex fossil, her discovery raised an obvious question -- how the tissue could have survived so long?
The bone was 68 million years old, and conventional wisdom about fossilization is that all soft tissue, from blood to brains, decomposes.
Possible contamination of samples can also occur in temperate zones.
While low collagen content is a condition we cannot overcome, we can use several chemical and elemental indicators in order to assess collagen quality.
The result is like a radioactive clock that ticks away as unstable isotopes decay into stable ones.
You can't predict when a specific unstable atom, or parent, will decay into a stable atom, or daughter.
To read the time on this radioactive clock, scientists use a device called a mass spectrometer to measure the number of parent and daughter atoms.