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Schwarzschild Radius
Brief definition and equation for this quantity.
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Enhanced NMR Periodic Table
Properties of elements and their isotopes can be displayed by clicking on the periodic table. Properties include melting point, density, radius, abundance, NMR frequency and spin. The site does ...
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Inverse Square Law
Any point source which spreads its influence equally in all directions without a limit to its range will obey the inverse square law. This comes from strictly geometrical considerations. The ...
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Event Horizon
After collapse to the neutron star stage, stars with masses less than 1-3 solar masses should remain neutron stars. Those of masses greater than 1 to 3 collapse toward zero spatial extent - toward a ...
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