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Carbon-14 dating can be used for biological tissues as old as 50 or 60 thousand years, but is most accurate for younger samples, since the abundance of nuclei in them is greater.
One of the most famous cases of carbon-14 dating involves the Shroud of Turin, a long piece of fabric purported to be the burial shroud of Jesus (see Figure 22.28).
Half of what remains decays in the next half-life, and half of that in the next, and so on.
The time in which half of the original number of nuclei decay is defined as the .
After one half-life passes, half of the remaining nuclei will decay in the next half-life.
This relic was first displayed in Turin in 1354 and was denounced as a fraud at that time by a French bishop.
Its remarkable negative imprint of an apparently crucified body resembles the then-accepted image of Jesus.