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  1. Homework and Coursework

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      Latest: Cylinder in 3 D
  2. Science Education

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  3. Physics

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    2. Classical Physics

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    5. Atomic & Condensed Matter

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    6. High Energy, Nuclear, Particle Physics

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    7. Beyond the Standard Model

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  4. Astronomy and Cosmology

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    2. Cosmology

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  5. Mathematics

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  6. Engineering

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  7. Other Sciences

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  8. PF Lounge

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