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Jewish historian who defined and described the characteristics of the three existing Jewish orders: the Sadducees, the Pharisees, and the Essenes; for example, he reported that those Essene men who chose to marry were primarily concerned about their wives' morality. and wrested Judea from the rule of the Seleucids and their Greek practices. ancient Hebrew script; one of the offshoots of the Phoenician script; used exclusively in the First Temple period and in priestly circles and as a symbol of nationalistic revival in the Second Temple Period.

In the nineteenth century, prominent scientists such as Charles Lyell, Charles Darwin, Sir William Thomson (Lord Kelvin), and Thomas Huxley, were in continual debate about the age of the earth.

Uranium-238, whose half-life is 4.5 billion years, transmutes into lead-206, a stable end-product.

Boltwood explained that by studying a rock containing uranium-238, one can determine the age of the rock by measuring the remaining amount of uranium-238 and the relative amount of lead-206. The long half-life of uranium-238 makes it possible to date only the oldest rocks.

However, one of the most widely used and accepted method is radioactive dating.

All radioactive dating is based on the fact that a radioactive substance, through its characteristic disintegration, eventually transmutes into a stable nuclide.