What is potassium argon dating used for

Argon is common in the atmosphere, from where it is obtained for commercial purposes.

Almost all (99.60%) of this argon is the naturally occurring isotope Ar, but there are many other isotopes of Argon.

Most likely, Nowrangi told Live Science, the gas acts on these neuroreceptors, specifically the NMDA receptor (which stands for N-methyl-D-aspartate for the neurotransmitter it receives) or the GABA receptor (which stands for gamma-aminobutyric acid).

Somehow, when taken up by these receptors, the argon seems to act to prevent cells from self-destructing in response to brain damage.

The gas is pumped around important documents such as a map of the world dating back to 1507 in the Library of Congress, and a copy of the Magna Carta held by the U. For many years, the noble gas xenon has been researched as a treatment for brain injuries.

Xenon, however, is expensive, leading researchers to turn to its noble gas cousin, argon, as a potential alternative.

She covers the world of human and animal behavior, as well as paleontology and other science topics.

One review published in the journal Medical Gas Research in February 2014 found that in most cases, argon treatment reduces brain cell death by significant amounts — 15 to 25 percent, said Derek Nowrangi, one of the paper's authors and a doctoral student at the Loma Linda University School of Medicine in California. Brain cells communicate with the use of chemicals called neurotransmitters and with neuroreceptors that fit together like lock and key.

The two shared the Nobel Prize in Chemistry in 1904 for the discovery.

Argon led to other eureka moments for Ramsey, as well.

Argon is also a good insulator, so it's often pumped into deep-sea diving dry suits to keep the diver warm.

Another use for argon is in historical preservation. Unlike reactive oxygen, the argon doesn't degrade the paper or ink on delicate documents.

What is potassium argon dating used for