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Radiocarbon dating uses isotopes of the element carbon. Cosmic rays – high energy particles from beyond the solar system – bombard Earth’s upper atmosphere continually, in the process creating the unstable carbon-14. Because it’s unstable, carbon-14 will eventually decay back to carbon-12 isotopes.Because the cosmic ray bombardment is fairly constant, there’s a near-constant level of carbon-14 to carbon-12 ratio in Earth’s atmosphere.But soon these discarded discs could take on a different role: ... Researchers sought to find out if that was the case for measuring magnetic field strengths.A new article examines whether a double H-coil method or a single H-coil method is a .....can, however, be traced with a Geiger counter or other detection device.Iodine-131 has proved effective in treating hyperthyroidism.A team of researchers has derived the first theoretical equation to demonstrate that global ...— Now that most consumers download and stream their movies and music, more and more CDs and DVDs will end up in landfills or be recycled.

It can be used on objects as old as about 62,000 years.

Buckyball sandwiches combine fullerenes and graphene. Scientists have created crystals that capture carbon dioxide much more efficiently than previously known materials, even in the ...

— The chemical properties of atoms depend on the number of protons in their nuclei, placing them into the periodic table.

Its presence in organic materials is used extensively as basis of the radiocarbon dating method to date archaeological, geological, and hydrogeological samples.

— Scientists have created a new structure by encapsulating a single layer of fullerene molecules between two graphene sheets. — A new material with micropores might be a way to fight climate change.

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