science and black holes basic properties scientist writes physical mathematical formulas |
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| navigate by keyword : scientist formula science astronomy teacher blackboard physics chalk genius complex ladder writing white board study education university school man schwarzschild drawing male mathematics write chalkboard knowledge person classroom concept solution equation student college wall mathematician analysis algebra academic learn professor intelligent theory professional young lecture problem calculation class work |
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| Science and black holes.Basic properties of black holes. A scientist writes physical and mathematical formulas on a blackboard with white chalk.Schwarzschild radius |
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