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C, or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.Its presence in organic materials is the basis of the radiocarbon dating method pioneered by Willard Libby and colleagues (1949) to date archaeological, geological and hydrogeological samples.And in the aftermath of the March 2011 earthquake and tsunami that struck Japan, a nuclear crisis raised fears about radiation and questions about the safety of nuclear power.­Nuclear radiation can be both extremely beneficial and extremely dangerous. X-ray machines, some types of sterilization equipment and nuclear power plants all use nuclear radiation -- but so do nuclear weapons.

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It is called "Carbon-12," which is abbreviated "C." The fact that the atom has six protons is what makes it carbon.Most nitrogen atoms have seven protons and seven neutrons, so their atomic mass is 7 7 = 14.The fact that it has seven protons is what makes it nitrogen.Carbon-14 was discovered on 27 February 1940, by Martin Kamen and Sam Ruben at the University of California Radiation Laboratory in Berkeley, California.Its existence had been suggested by Franz Kurie in 1934. The primary natural source of carbon-14 on Earth is cosmic ray action on nitrogen in the atmosphere, and it is therefore a cosmogenic nuclide.

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I will also assume that you'd like to ease into this a little more slowly than an anonymous romp in the park with someone who "right swiped" you 10 minutes after posting your profile (although if that's your goal, you can skim or skip this guide, join Tinder, and live happily ever after... Third assumption is that you don't want to pay for something you may hate or suck at doing. Here's three to start with: Plentyof Fish OKCupid Tinder Alan Henry gives a pretty accurate description of each here.

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