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The entire wiki reimagined as a visual magazine with video discovery · Watch your interests come alive
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Radiocarbon dating
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Radiocarbon dating is a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon.
Radiocarbon dating helped verify the authenticity of the Dead Sea Scrolls.
Radiocarbon dating helped verify the authenticity of the Dead Sea Scrolls.
Willard Libby, the inventor of radiocarbon dating
Willard Libby, the inventor of radiocarbon dating
North Ronaldsay sheep on the beach in North Ronaldsay, Scotland. In the winter, these sheep eat seaweed, which has a higher δ13C content than grass; s
North Ronaldsay sheep on the beach in North Ronaldsay, Scotland. In the winter, these sheep eat seaweed, which has a higher δ13C content than grass; samples from these sheep have a δ13C value of about −13‰, which is much higher than for sheep that feed on grasses.
Measuring 14 C is now most commonly done with an accelerator mass spectrometer
Measuring 14 C is now most commonly done with an accelerator mass spectrometer
Cosmic ray
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Cosmic rays or astroparticles are high-energy particles or clusters of particles that move through space at nearly the speed of light. They originate from outside the Solar System — from the Milky Way
Pacini makes a measurement in 1910.
Pacini makes a measurement in 1910.
Increase of ionization with altitude as measured by Hess in 1912 (left) and by Kolhörster (right)
Increase of ionization with altitude as measured by Hess in 1912 (left) and by Kolhörster (right)
Hess lands after his balloon flight in 1912.
Hess lands after his balloon flight in 1912.
Sources of ionizing radiation in interplanetary space.
Sources of ionizing radiation in interplanetary space.