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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: Simple Harmonic Motion problem with spring mass system physicsuwa, Mar 3, 2015 at 10:27 PM

    2. Science and Math Textbooks

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      Latest: Can't remember where I read this! (when using the proper-time parametrization) Shyan, Mar 3, 2015 at 9:02 PM

    3. Academic Guidance

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      Latest: Powerlearning- 16 hours a day ellipsis, Mar 3, 2015 at 10:05 PM

    4. Career Guidance

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      Latest: Do you have to be a genius to do nuclear/particle physics? Arsenic&Lace, Mar 3, 2015 at 10:11 PM

    5. Educators and Teaching

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      Latest: Looking for feedback on physics animations Matt Whibley, Mar 3, 2015 at 6:46 AM

    6. STEM Learning Materials

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      Latest: Material that'll help improve write-ups for lab experiments? Vagn, Mar 1, 2015 at 3:36 PM

  2. Physics

    1. General Physics

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      Latest: Double Slit Probability Amplitude Orientation Nick., Mar 3, 2015 at 10:01 PM

    2. Classical Physics

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      Latest: Mythbusters: Blow your own sail georgir, Mar 3, 2015 at 9:05 PM

    3. Quantum Physics

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      Latest: Haag's Theorem in QFT atyy, Mar 3, 2015 at 10:09 PM

    4. Special and General Relativity

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      Latest: Speed of light postulate and clock synchronization DaleSpam, Mar 3, 2015 at 10:31 PM

    5. Atomic, Solid State, Comp. Physics

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      Latest: Gibbs Free Energy in Superconductors taishizhiqiu, Mar 3, 2015 at 8:35 PM

    6. High Energy, Nuclear, Particle Physics

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      Latest: What functions of fields describe particles? matteo137, Mar 3, 2015 at 2:36 PM

    7. Beyond the Standard Model

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      Latest: Quick question about LQG Self-Dual Black Holes marcus, Mar 3, 2015 at 7:33 PM

  3. Astronomy and Cosmology

    1. Astronomy and Astrophysics

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      Latest: Ceres at 1 lightsecond, 36% size of full moon marcus, Mar 3, 2015 at 9:24 PM

    2. Cosmology

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      Latest: Acceleration a Function of Density, yet Density is Constant? PeterDonis, Mar 3, 2015 at 10:28 PM

    3. Stargazing and Telescopes

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      Latest: Here are some astrophotos I've taken lately davenn, Mar 3, 2015 at 9:25 PM

  4. Mathematics

    1. General Math

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      Messages:
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      Latest: Probability Question - Getting x heads from n coin tosses Mentallic, Mar 3, 2015 at 9:34 PM

    2. Calculus

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      Latest: Fundamental Theorem of Calculus andyrk, Mar 3, 2015 at 10:21 PM

    3. Differential Equations

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      Latest: Understanding coupled Runga Kutta derivation ognik, Mar 2, 2015 at 9:35 PM

    4. Topology and Analysis

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      Latest: Clarification about Poincaré's conjecture lavinia, Mar 3, 2015 at 1:45 PM

    5. Linear and Abstract Algebra

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      Latest: Cholesky pairs Greg Bernhardt, Mar 3, 2015 at 6:00 PM

    6. Differential Geometry

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      Latest: Koszul connexion lavinia, Mar 3, 2015 at 1:57 PM

    7. Set Theory, Logic, Probability, Statistics

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      Latest: Test for Normality of Residuals -- Is this how it Works? WWGD, Mar 3, 2015 at 8:46 PM

    8. Math Software and LaTeX

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      Latest: Looking for calculus program to find volume billy_joule, Mar 3, 2015 at 4:36 PM

  5. Engineering

    1. General Engineering

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      Latest: Horsepower needed to lift 600 lb load, w/8 motors julianwitkowski, Mar 3, 2015 at 9:42 PM

    2. Engineering Systems and Design

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      Latest: Control design for PWM converter Baluncore, Mar 3, 2015 at 4:58 PM

    3. Mechanical Engineering

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      Mechanical Engineering

      Sub-Forums

      1. Aerospace Engineering

      2. Automotive Engineering

      Latest: Determining RC EDF Motor Parameters Jdo300, Mar 3, 2015 at 9:24 PM

    4. Electrical Engineering

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      Latest: Joule thief : number of turns around the ferrite core NascentOxygen, Mar 3, 2015 at 10:09 PM

    5. Materials and Chemical Engineering

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      Latest: Reflectance or reflectivity spectrum interpretation fog37, Mar 3, 2015 at 9:58 PM

    6. Nuclear Engineering

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      Latest: List of Neutron Moderators Astronuc, Mar 3, 2015 at 8:21 PM

  6. Other Sciences

    1. Chemistry

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      Latest: How good is HCN addition to aromatic conjugated aldehyde? K.z_z, Mar 3, 2015 at 3:58 PM

    2. Biology

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      Latest: What might cell membranes look like on Titan? tijana, Mar 3, 2015 at 10:10 PM

    3. Medical Sciences

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      Latest: is there any nutritional benefit to eating moltose dextrin thankz, Mar 3, 2015 at 4:29 PM

    4. Programming and Computer Science

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      Latest: Creating new algorithm like PID mfb, Mar 3, 2015 at 3:57 PM

    5. Earth

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      Latest: Villarrica volcano davenn, Mar 3, 2015 at 9:39 PM

    6. Computing and Technology

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      Computing and Technology

      Sub-Forums

      1. Calculators

      Latest: Is 4GB of VRAM overkill for 1080p gaming? Hercuflea, Mar 2, 2015 at 10:56 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

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      6. Social Sciences

      Latest: Random Thoughts part 4 WWGD, Mar 3, 2015 at 10:20 PM

    2. Science Fiction and Fantasy

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      Science Fiction and Fantasy

      Sub-Forums

      1. Science Fiction Writing

      Latest: Who is your favorite SciFi character? m_robertson, Mar 3, 2015 at 2:13 PM

    3. Feedback and Announcements

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      Feedback and Announcements

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      1. PF Member Awards 2014

      Latest: I say a big thank you :) Nitox33, Mar 3, 2015 at 5:31 PM

    4. New Member Introductions

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      Latest: Hello from Virginia Greg Bernhardt, Mar 3, 2015 at 10:18 PM