Physics Forums - The Fusion of Science and Community

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    2. Academic Guidance

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    1. General Physics

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      Latest: How do GPS Satellites work exactly? Vanadium 50, Feb 28, 2015 at 6:30 PM
    2. Classical Physics

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    3. Quantum Physics

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      Latest: classical states and decoherence atyy, Feb 28, 2015 at 6:40 PM
    4. Special and General Relativity

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      Latest: Quick one-line on Tensor Contraction unscientific, Feb 28, 2015 at 6:32 PM
    5. Atomic, Solid State, Comp. Physics

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    6. High Energy, Nuclear, Particle Physics

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      Latest: Experimental Black Hole Physics wabbit, Feb 28, 2015 at 4:00 AM
    7. Beyond the Standard Model

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      Latest: Hubble Constant and Entropy Jimster41, Feb 28, 2015 at 4:44 PM
    1. Astronomy and Astrophysics

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      Latest: Asteroid 99942 Apophis impacting the Earth in 2029 D H, Feb 28, 2015 at 4:03 PM
    2. Cosmology

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    3. Stargazing and Telescopes

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      Latest: Planning to buy a first telescope? jim hardy, Feb 27, 2015 at 12:44 PM
    1. General Math

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    2. Calculus

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      Latest: Help with Taylor Series KevinMWHM, Feb 28, 2015 at 2:25 PM
    3. Differential Equations

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      Latest: Fourier Transform joshmccraney, Feb 28, 2015 at 2:23 PM
    4. Topology and Analysis

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      Latest: Clarification about Poincaré's conjecture lavinia, Feb 28, 2015 at 5:59 PM
    5. Linear and Abstract Algebra

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      Latest: Green's Function - modified operator RightFresh, Feb 28, 2015 at 4:17 PM
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    7. Set Theory, Logic, Probability, Statistics

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      Latest: Drawing three cards - combined probability mathman, Feb 28, 2015 at 4:16 PM
    8. Math Software and LaTeX

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      Latest: Fitting an ellipse through 3-d data SubTachyon, Feb 27, 2015 at 4:36 PM
    1. General Engineering

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      Latest: Why buy new model rocket engines? BonesSheppard, Feb 28, 2015 at 6:41 PM
    2. Engineering Systems and Design

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      Latest: Reaction forces not matching with Test results Bruce321, Feb 28, 2015 at 6:16 PM
    3. Mechanical Engineering

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      Latest: Drawing and meshing involute bevel gears in CAD Jarfi, Feb 28, 2015 at 6:19 PM
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      Latest: difference between emitter and collector? Baluncore, Feb 28, 2015 at 5:02 PM
    5. Materials and Chemical Engineering

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      Latest: Delta(U) = Cvdelta(T) for Ideal Gases??? Lairix, Feb 28, 2015 at 5:37 PM
    6. Nuclear Engineering

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      Latest: The Nuclear Power Thread nikkkom, Feb 28, 2015 at 4:33 PM
    1. Chemistry

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      Latest: The Smell of Garlic and Enzymatic Oxidation dncosar, Feb 28, 2015 at 11:00 AM
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    3. Medical Sciences

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      Latest: Can pull up exercise increase height? Mark44, Feb 28, 2015 at 11:01 AM
    4. Programming and Computer Science

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      Latest: C++ and pthread simple program help perplexabot, Feb 28, 2015 at 2:42 PM
    5. Earth

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      Latest: Large crater in Siberia D H, Feb 27, 2015 at 4:49 PM
    6. Computing and Technology

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    1. General Discussion

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      Latest: Our Beautiful Universe DennisN, Feb 28, 2015 at 6:42 PM
    2. Science Fiction and Fantasy

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      Latest: Hard Science Fiction GiantSheeps, Feb 28, 2015 at 5:18 PM
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      Latest: Scribble pad along with normal posting Meesh, Feb 28, 2015 at 6:11 PM
    4. New Member Introductions

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      Latest: Peer pressure Greg Bernhardt, Feb 28, 2015 at 5:59 PM