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Physics Forums - The Fusion of Science and Community

  1. Science Education

    1. Homework and Coursework Questions

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      Homework and Coursework Questions

      Sub-Forums

      1. Introductory Physics Homework

      2. Advanced Physics Homework

      3. Precalculus Mathematics Homework

      4. Calculus and Beyond Homework

      5. Biology, Chemistry and Earth Homework

      6. Engineering and Computer Science Homework

      Latest: real analysis, sequence of sequences convergence proof Perelman, Feb 28, 2015 at 9:02 PM

    2. Science and Math Textbooks

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      Latest: Introductory book on semiconductors? Astronuc, Feb 28, 2015 at 8:07 PM

    3. Academic Guidance

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      Latest: How can physics tie into 20th century European history? MohammedRady97, Feb 28, 2015 at 7:42 PM

    4. Career Guidance

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      Latest: As a High school senior, my knowledge of physics is limited talrefae, Feb 28, 2015 at 9:01 PM

    5. Educators and Teaching

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      Latest: Why are students permitted to use calculators on AP math? momof4, Feb 27, 2015 at 11:30 AM

    6. STEM Learning Materials

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      Latest: Problem Book in Relativity and Gravitation, online, free bcrowell, Feb 25, 2015 at 4:30 PM

  2. Physics

    1. General Physics

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      Latest: Measurement systems Lobos, Feb 28, 2015 at 8:00 PM

    2. Classical Physics

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      Latest: What happens in a simple circuit with an EMF and a resistor? tech99, Feb 28, 2015 at 6:03 PM

    3. Quantum Physics

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      Latest: Quantum entanglement Nugatory, Feb 28, 2015 at 9:00 PM

    4. Special and General Relativity

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      Latest: Quick one-line on Tensor Contraction unscientific, Feb 28, 2015 at 8:35 PM

    5. Atomic, Solid State, Comp. Physics

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      Latest: Can scotch tape method get film size larger than particles? Greg Bernhardt, Feb 28, 2015 at 6:00 PM

    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 marcus, Feb 28, 2015 at 8:42 PM

  3. Astronomy and Cosmology

    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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      Latest: Gravitational Effect of Electromagnetic Radiation Drakkith, Feb 28, 2015 at 8:45 PM

    3. Stargazing and Telescopes

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

  4. Mathematics

    1. General Math

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      Latest: Starting with Spivak - question lurflurf, Feb 28, 2015 at 9:03 PM

    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

    6. Differential Geometry

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      Latest: Is this a valid parametrization of the torus? Ben Niehoff, Feb 28, 2015 at 4:03 PM

    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

  5. Engineering

    1. General Engineering

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      Latest: Why buy new model rocket engines? Dotini, Feb 28, 2015 at 7:59 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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      Mechanical Engineering

      Sub-Forums

      1. Aerospace Engineering

      2. Automotive Engineering

      Latest: Determine the Rate of Change of Pressure Across a Valve HuskyNamedNala, Feb 28, 2015 at 7:44 PM

    4. Electrical Engineering

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      Latest: How to use current feedback in the same circuit in Cadence dafaq, Feb 28, 2015 at 6:35 PM

    5. Materials and Chemical Engineering

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      Latest: Delta(U) = Cvdelta(T) for Ideal Gases??? Astronuc, Feb 28, 2015 at 8:12 PM

    6. Nuclear Engineering

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

  6. Other Sciences

    1. Chemistry

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

    2. Biology

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      Latest: What might cell membranes look like on Titan? jim hardy, Feb 28, 2015 at 7:24 PM

    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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      20,346
      Latest: Large crater in Siberia D H, Feb 27, 2015 at 4:49 PM

    6. Computing and Technology

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      Computing and Technology

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      1. Calculators

      Latest: Is 4GB of VRAM overkill for 1080p gaming? Hercuflea, Feb 28, 2015 at 5:51 AM

  7. PF Lounge

    1. General Discussion

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      General Discussion

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      1. Current Events

      2. History and Humanities

      3. Photography

      4. Fun, Photos and Games

      5. Relationships

      6. Social Sciences

      Latest: Bucket list - things to do, places to go/see jedishrfu, Feb 28, 2015 at 7:22 PM

    2. Science Fiction and Fantasy

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      Science Fiction and Fantasy

      Sub-Forums

      1. Science Fiction Writing

      Latest: Hard Science Fiction GiantSheeps, Feb 28, 2015 at 5:18 PM

    3. Feedback and Announcements

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      Feedback and Announcements

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      1. PF Member Awards 2014

      Latest: Scribble pad along with normal posting Greg Bernhardt, Feb 28, 2015 at 9:02 PM

    4. New Member Introductions

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      Latest: Hi folks Meesh, Feb 28, 2015 at 6:53 PM