Founder of carbon dating

Living things tend to ingest materials that contain carbon, so the percentage of carbon-14 within living things is the same as the percentage of carbon-14 in the environment.

Once an organism dies, it no longer ingests much of anything.

Many carbon compounds are essential for life as we know it.

Radiocarbon dating is a key tool archaeologists use to determine the age of plants and objects made with organic material.

Naturally occurring graphite occurs in two forms, alpha and beta.

These two forms have identical physical properties but different crystal structures.

For example, if the concentration of carbon-14 in the remains of an organism is half of the natural concentration of carbon-14, a scientist would estimate that the organism died about 5,730 years ago, the half-life of carbon-14.

In addition to its use as a lubricant, graphite, in a form known as coke, is used in large amounts in the production of steel.

A single buckyball consists of 60 or 70 carbon atoms (C) linked together in a structure that looks like a soccer ball.

They can trap other atoms within their framework, appear to be capable of withstanding great pressures and have magnetic and superconductive properties.

Diamond, the third naturally occurring form of carbon, is one of the hardest substances known.

Although naturally occurring diamond is typically used for jewelry, most commercial quality diamonds are artificially produced.

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