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(b) One hour is nearly three full half-lives of the carbon-11 nucleus.As a result, one would expect the amount of sample remaining to be approximately one eighth of the original amount.Then, half of that amount in turn decays in the following half-life.
That means they have shorter lifetimes, producing a greater rate of decay.
Samples were tested at three independent laboratories, each being given four pieces of cloth, with only one unidentified piece from the shroud, to avoid prejudice.
All three laboratories found samples of the shroud contain 92 percent of the Part of the Shroud of Turin, which shows a remarkable negative imprint likeness of Jesus complete with evidence of crucifixion wounds.
The 129.4 g remaining is just a bit larger than one-eighth, which is sensible given a half-life of just over 20 min.(c) Label analysis shows that the unit of Becquerel is sensible, as there are 0.0735 g of carbon-11 decaying each second.
That is smaller amount than at the beginning of the hour, when This dates the material in the shroud to 1988–690 = 1300.