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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: Rolling and collision lavankohsa, Mar 1, 2015 at 11:14 PM

    2. Science and Math Textbooks

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      Latest: Cosmology books for high school students jedishrfu, Mar 1, 2015 at 8:42 PM

    3. Academic Guidance

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      Latest: What electives would be most beneficial? CrystalCaribean, Mar 1, 2015 at 10:39 PM

    4. Career Guidance

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      Latest: Being a patent attorney as an immigrant in america jedishrfu, Mar 1, 2015 at 10:17 PM

    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: Do we have a complete knowledge of the spectrum of light? Jon Richfield, Mar 1, 2015 at 10:47 PM

    2. Classical Physics

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      Latest: Calculation of the force exerted by a liquid Arka420, Mar 1, 2015 at 10:51 PM

    3. Quantum Physics

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      Latest: Energy on the RHS of Schrodinger wave equation Urmi Roy, Mar 1, 2015 at 10:56 PM

    4. Special and General Relativity

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      Latest: Time DIlation and Observation UVCatastrophe, Mar 1, 2015 at 8:33 PM

    5. Atomic, Solid State, Comp. Physics

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      Latest: Differences between Boltzmann and Fermi-Dirac distributions Urmi Roy, Mar 1, 2015 at 10:49 PM

    6. High Energy, Nuclear, Particle Physics

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      Latest: differential cross-section for partonic collisions WarDieS, Mar 1, 2015 at 8:16 PM

    7. Beyond the Standard Model

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      Latest: Hubble Constant and Entropy Jimster41, Mar 1, 2015 at 8:03 PM

  3. Astronomy and Cosmology

    1. Astronomy and Astrophysics

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      Latest: Horizontal Branch Star liometopum, Mar 1, 2015 at 10:44 PM

    2. Cosmology

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      Latest: Acceleration a Function of Density, yet Density is Constant? PeterDonis, Mar 1, 2015 at 9:25 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: Prove recurrence relation via mathematical induction ellipsis, Mar 1, 2015 at 10:31 PM

    2. Calculus

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      Latest: Question regarding differentiation of x with respect to x Mark44, Mar 1, 2015 at 5:19 PM

    3. Differential Equations

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      Latest: Understanding coupled Runga Kutta derivation ognik, Mar 1, 2015 at 4:59 PM

    4. Topology and Analysis

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      Latest: Clarification about Poincaré's conjecture lavinia, Mar 1, 2015 at 5:00 PM

    5. Linear and Abstract Algebra

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      Latest: double dot product mathman, Mar 1, 2015 at 5:30 PM

    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: confusion over definition of relations in set theory Stephen Tashi, Mar 1, 2015 at 11:32 AM

    8. Math Software and LaTeX

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      Latest: matlab intro DrClaude, Mar 1, 2015 at 1:44 PM

  5. Engineering

    1. General Engineering

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      Latest: Hotel Load of train: Why separate generator & not locomotive jim hardy, Mar 1, 2015 at 11:11 PM

    2. Engineering Systems and Design

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      Latest: "Members of a frame are axially inextensible" implication? Chestermiller, Mar 1, 2015 at 12:13 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 Purple_Dan, Mar 1, 2015 at 5:29 PM

    4. Electrical Engineering

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      Latest: Replacing a capacitor in my DVD player jim hardy, Mar 1, 2015 at 10:22 PM

    5. Materials and Chemical Engineering

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      Latest: Understanding of crystal wave vector Urmi Roy, Mar 1, 2015 at 11:09 PM

    6. Nuclear Engineering

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      Latest: An idea for a Pu-238 replacement for NASA space missions Astronuc, Mar 1, 2015 at 11:02 PM

  6. Other Sciences

    1. Chemistry

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      Latest: Work in Enthalpy Ibraheem, Mar 1, 2015 at 8:19 PM

    2. Biology

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      Latest: Neanderthal fossils... never frozen? Evo, Mar 1, 2015 at 10:34 PM

    3. Medical Sciences

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      Latest: Can pull up exercise increase height? jobyts, Feb 28, 2015 at 11:37 PM

    4. Programming and Computer Science

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      Latest: Rounding up Random Numbers Mark44, Mar 1, 2015 at 9:32 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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      Computing and Technology

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      1. Calculators

      Latest: Is 4GB of VRAM overkill for 1080p gaming? B. Elliott, Mar 1, 2015 at 9:32 PM

  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 OCR, Mar 1, 2015 at 10:30 PM

    2. Science Fiction and Fantasy

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      Science Fiction and Fantasy

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      1. Science Fiction Writing

      Latest: And... who is your Swords+Sorcery or Fantasy character? Vanadium 50, Mar 1, 2015 at 9:08 PM

    3. Feedback and Announcements

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      Feedback and Announcements

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      1. PF Member Awards 2014

      Latest: Walking on eggshells narrator, Mar 1, 2015 at 10:53 PM

    4. New Member Introductions

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      Latest: New Member! Thalia Vinyaya, Mar 1, 2015 at 11:07 PM