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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: Is the photon scattering elastically? orsanyuksek2013, Mar 1, 2015 at 4:54 AM

    2. Science and Math Textbooks

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      Latest: Good book for Mechanics? TomServo, Feb 28, 2015 at 10:54 PM

    3. Academic Guidance

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      Latest: Want to major in computer science, but dont like programming symbolipoint, Mar 1, 2015 at 1:56 AM

    4. Career Guidance

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      Latest: DoE/SULI acceptances? QuantumCurt, Feb 28, 2015 at 10:58 PM

    5. Educators and Teaching

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      Latest: Why are students permitted to use calculators on AP math? symbolipoint, Mar 1, 2015 at 3:04 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: Why is blowing stronger than sucking? sophiecentaur, Mar 1, 2015 at 4:52 AM

    2. Classical Physics

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      Latest: stupid question on energy HummusAkemi, Mar 1, 2015 at 4:15 AM

    3. Quantum Physics

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      Latest: Property related to Hermitian operators. amjad-sh, Mar 1, 2015 at 4:43 AM

    4. Special and General Relativity

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      Latest: Moving Frame With Many Clocks Pass By 1977ub, Mar 1, 2015 at 5:00 AM

    5. Atomic, Solid State, Comp. Physics

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      Latest: What are the physical implications of phonon softening? fisher468, Mar 1, 2015 at 4:01 AM

    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: String Theory- Multiverse phinds, Mar 1, 2015 at 2:49 AM

  3. Astronomy and Cosmology

    1. Astronomy and Astrophysics

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      Latest: Our Beautiful Universe DennisN, Feb 28, 2015 at 10:38 PM

    2. Cosmology

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      Latest: Recommendations of book. Prannoy Mehta, Mar 1, 2015 at 3:52 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: Function and function Mark44, Mar 1, 2015 at 1:31 AM

    2. Calculus

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      Latest: Regulated Integral with Convergence Factor "pi"mp, Mar 1, 2015 at 2:25 AM

    3. Differential Equations

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      Latest: system of diff eqs modeling tanks of brine Astronuc, Feb 28, 2015 at 11:43 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: Hotel Load of train: Why separate generator & not locomotive Drakkith, Mar 1, 2015 at 3:46 AM

    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: Drawing and meshing involute bevel gears in CAD Baluncore, Mar 1, 2015 at 3:30 AM

    4. Electrical Engineering

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      Latest: Replacing a capacitor in my DVD player sophiecentaur, Mar 1, 2015 at 5:01 AM

    5. Materials and Chemical Engineering

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      Latest: Delta(U) = Cvdelta(T) for Ideal Gases??? Chestermiller, Feb 28, 2015 at 9:42 PM

    6. Nuclear Engineering

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      Latest: The Nuclear Power Thread Jon Richfield, Mar 1, 2015 at 3:05 AM

  6. Other Sciences

    1. Chemistry

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      Latest: Am I reading this reaction right? Borek, Mar 1, 2015 at 3:10 AM

    2. Biology

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      Latest: Neanderthal fossils... never frozen? Bystander, Mar 1, 2015 at 3:10 AM

    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: 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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      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

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      4. Fun, Photos and Games

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      Latest: Is there a way to measure light frequencies of brainwaves SteamKing, Mar 1, 2015 at 4:57 AM

    2. Science Fiction and Fantasy

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      Science Fiction and Fantasy

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      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: Chat Groups? Meesh, Feb 28, 2015 at 11:45 PM

    4. New Member Introductions

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      Latest: Introducing myself phinds, Mar 1, 2015 at 4:32 AM