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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: Accelerations effect on force Shoebox, Mar 2, 2015 at 10:31 AM

    2. Science and Math Textbooks

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      Latest: The Best Textbook for a Good Understanding of Mathematics PeroK, Mar 2, 2015 at 5:09 AM

    3. Academic Guidance

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      Latest: What pre-requesite should i study? ZapperZ, Mar 2, 2015 at 10:03 AM

    4. Career Guidance

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      Latest: I want to do nuclear, electrical, and mechanical engineering DEvens, Mar 2, 2015 at 10:18 AM

    5. Educators and Teaching

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      Latest: New to AP teaching - AP Physics 1 test help Redbelly98, Mar 1, 2015 at 12:00 PM

    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: Why can not we generate electricity with magnets? DEvens, Mar 2, 2015 at 10:27 AM

    2. Classical Physics

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      Latest: Calculation of the force exerted by a liquid jbriggs444, Mar 2, 2015 at 10:25 AM

    3. Quantum Physics

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      Latest: Projection operator and measurement TrickyDicky, Mar 2, 2015 at 10:20 AM

    4. Special and General Relativity

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      Latest: Time dilation harrylin, Mar 2, 2015 at 10:29 AM

    5. Atomic, Solid State, Comp. Physics

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      Latest: Determine Crystal structure of non-cubic crystal in XRD plot M Quack, Mar 2, 2015 at 8:16 AM

    6. High Energy, Nuclear, Particle Physics

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      Latest: differential cross-section for partonic collisions Vanadium 50, Mar 2, 2015 at 8:55 AM

    7. Beyond the Standard Model

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      Latest: Hubble Constant and Entropy wabbit, Mar 2, 2015 at 8:23 AM

  3. Astronomy and Cosmology

    1. Astronomy and Astrophysics

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      Latest: Ceres at 1 lightsecond, 36% size of full moon marcus, Mar 2, 2015 at 10:14 AM

    2. Cosmology

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      Latest: Extremely large Black Hole discovered 900M years after BB Garth, Mar 2, 2015 at 7:41 AM

    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: Why does Carmichael's function mean what it does? mfb, Mar 2, 2015 at 9:56 AM

    2. Calculus

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      Latest: surface integral ZARATHUSTRA, Mar 2, 2015 at 10:25 AM

    3. Differential Equations

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      Latest: Understanding coupled Runga Kutta derivation DrClaude, Mar 2, 2015 at 2:57 AM

    4. Topology and Analysis

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      Latest: Clarification about Poincaré's conjecture lavinia, Mar 2, 2015 at 10:02 AM

    5. Linear and Abstract Algebra

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      Latest: Im(BF) in Im(B)? Fredrik, Mar 2, 2015 at 8:35 AM

    6. Differential Geometry

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      Latest: Attempting to understand diffeomorphisms "Don't panic!", Mar 1, 2015 at 11:31 AM

    7. Set Theory, Logic, Probability, Statistics

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      Latest: Drawing three cards - combined probability Lenus, Mar 1, 2015 at 11:30 PM

    8. Math Software and LaTeX

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      Latest: Latex Question joshmccraney, Mar 2, 2015 at 3:19 AM

  5. Engineering

    1. General Engineering

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      Latest: Hotel Load of train: Why separate generator & not locomotive jim hardy, Mar 2, 2015 at 10:23 AM

    2. Engineering Systems and Design

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      Latest: Control design for PWM converter Baluncore, Mar 2, 2015 at 8:47 AM

    3. Mechanical Engineering

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      Mechanical Engineering

      Sub-Forums

      1. Aerospace Engineering

      2. Automotive Engineering

      Latest: Race car suspension Class Ranger Mike, Mar 2, 2015 at 9:51 AM

    4. Electrical Engineering

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      Latest: What is the polarity of a Pn junction diode Dr Ross, Mar 2, 2015 at 10:29 AM

    5. Materials and Chemical Engineering

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      Latest: Calculating mixture residual/departure enthalpy from EOS maistral, Mar 2, 2015 at 8:35 AM

    6. Nuclear Engineering

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      Latest: An idea for a Pu-238 replacement for NASA space missions Hologram0110, Mar 2, 2015 at 10:13 AM

  6. Other Sciences

    1. Chemistry

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      Latest: Work in Enthalpy Chestermiller, Mar 2, 2015 at 8:14 AM

    2. Biology

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      Latest: What might cell membranes look like on Titan? Andy Resnick, Mar 2, 2015 at 10:03 AM

    3. Medical Sciences

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      Latest: Bad luck is primary cause of most cancer thankz, Mar 2, 2015 at 6:43 AM

    4. Programming and Computer Science

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      Latest: [Fortran] Rounding up Random Numbers Lukejambo, Mar 2, 2015 at 8:40 AM

    5. Earth

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      Latest: Impact: Earth! A meteor/comet impact simulator OmCheeto, Mar 2, 2015 at 12:44 AM

    6. Computing and Technology

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      Computing and Technology

      Sub-Forums

      1. Calculators

      Latest: Digital pen guide Alicia Hurst, Mar 2, 2015 at 5:01 AM

  7. PF Lounge

    1. General Discussion

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      General Discussion

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      1. Current Events

      2. History and Humanities

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      6. Social Sciences

      Latest: The standard of living is going down for the average American Ghost117, Mar 2, 2015 at 10:10 AM

    2. Science Fiction and Fantasy

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      Science Fiction and Fantasy

      Sub-Forums

      1. Science Fiction Writing

      Latest: Can basic quantum physics explain the TARDIS from doctor who Ryan_m_b, Mar 2, 2015 at 6:19 AM

    3. Feedback and Announcements

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      Feedback and Announcements

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      1. PF Member Awards 2014

      Latest: Download the free PF App for iPhone/Android phones! Greg Bernhardt, Mar 2, 2015 at 10:09 AM

    4. New Member Introductions

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      Latest: Hello everyone! Greg Bernhardt, Mar 2, 2015 at 10:11 AM