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mc2 |
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| navigate by keyword : albert background black blackboard board calculate calculation calculus chalk chalkboard class classroom college complex concept educate education educational einstein emc2 energy equation figure formula genius handwriting intellectual intelligence knowledge learn lesson mass math mathematical mathematician mathematics number physics relativity school schoolwork science solution study studying teacher theory university write |
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| E=mc2. Theory of relativity, writings on blackboard. |
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Stockphotos.ro (c) 2025. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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