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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

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      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: Orbital Period GypsySmash, Feb 27, 2015 at 1:12 AM

    2. Science and Math Textbooks

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      Latest: Math Textbook Series. QuantumCurt, Feb 26, 2015 at 10:12 PM

    3. Academic Guidance

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      Latest: Choosing Graduate Advisor: Finding one's Interests Choppy, Feb 26, 2015 at 11:04 PM

    4. Career Guidance

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      Latest: Nuclear and Theoretical Physics e.bar.goum, Feb 27, 2015 at 12:40 AM

    5. Educators and Teaching

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      Latest: Why are students permitted to use calculators on AP math? QuantumCurt, Feb 27, 2015 at 12:43 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: magnetic field lines? davenn, Feb 26, 2015 at 11:01 PM

    2. Classical Physics

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      Latest: electron trajectory in B field with random energy kick jasonpatel, Feb 27, 2015 at 12:38 AM

    3. Quantum Physics

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      Latest: qm virtual particle force on wire, acrose the universe bhobba, Feb 26, 2015 at 10:42 PM

    4. Special and General Relativity

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      Latest: Active/Passive Diffeomorphisms – clarification on Rovelli’s haushofer, Feb 27, 2015 at 1:26 AM

    5. Atomic, Solid State, Comp. Physics

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      Latest: The Orbital and Spin Momenta of Light optophotophys, Feb 27, 2015 at 12:34 AM

    6. High Energy, Nuclear, Particle Physics

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      Latest: Experimental Black Hole Physics mfb, Feb 26, 2015 at 6:37 PM

    7. Beyond the Standard Model

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      Latest: Twice of supersymmetric transformation = translation Roy_1981, Feb 25, 2015 at 6:42 AM

  3. Astronomy and Cosmology

    1. Astronomy and Astrophysics

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      Latest: Earth and moon barycenter question. Drakkith, Feb 26, 2015 at 10:29 PM

    2. Cosmology

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      Latest: USE OF A BLACKHOLE :P Dipto, Feb 27, 2015 at 1:23 AM

    3. Stargazing and Telescopes

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      Latest: Planning to buy a first telescope? PAllen, Feb 26, 2015 at 10:11 PM

  4. Mathematics

    1. General Math

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      Latest: Find the pattern: 12, 44, 130, 342, 840 ... Mentallic, Feb 27, 2015 at 1:05 AM

    2. Calculus

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      Latest: Calculus Michael Spivak 3th ed. Pag 46: Function as a rule jbunniii, Feb 26, 2015 at 11:31 PM

    3. Differential Equations

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      Latest: Calculate the Pitch of a projectile with moving destination mfb, Feb 26, 2015 at 6:47 PM

    4. Topology and Analysis

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      Latest: A sequence of functions evaluated at a sequence AxiomOfChoice, Feb 25, 2015 at 7:53 AM

    5. Linear and Abstract Algebra

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      Latest: Constructing a field of 4 elements mathman, Feb 26, 2015 at 6:51 PM

    6. Differential Geometry

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      Latest: Question about geometric algebra -- Can any one help? jedishrfu, Feb 26, 2015 at 10:13 AM

    7. Set Theory, Logic, Probability, Statistics

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      Latest: Drawing three cards - combined probability Lenus, Feb 27, 2015 at 12:51 AM

    8. Math Software and LaTeX

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      Latest: Understanding this Computer program Slightly, Feb 26, 2015 at 8:32 PM

  5. Engineering

    1. General Engineering

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      Latest: List of Metals or Alloys With Fatigue Limits? thankz, Feb 26, 2015 at 12:30 PM

    2. Engineering Systems and Design

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      Latest: Energy from bike riding used to charge phones/laptops Drewdc90, Feb 26, 2015 at 10:35 PM

    3. Mechanical Engineering

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      Mechanical Engineering

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      1. Aerospace Engineering

      2. Automotive Engineering

      Latest: Frequency & Eigenvalue from dynamic eqn rk81, Feb 26, 2015 at 11:14 PM

    4. Electrical Engineering

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      Latest: How to use current feedback in the same circuit in cadence dafaq, Feb 27, 2015 at 1:06 AM

    5. Materials and Chemical Engineering

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      Latest: Buried water pipes freeze-has been cold-the sun comes out Bystander, Feb 27, 2015 at 12:46 AM

    6. Nuclear Engineering

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      Latest: Question about radioactivity Simon Bridge, Feb 26, 2015 at 11:56 PM

  6. Other Sciences

    1. Chemistry

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      Latest: Corrosion in metal pipe carrying DC current? amrmohammed, Feb 26, 2015 at 10:40 PM

    2. Biology

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      Latest: Were neanderthals truely strong? Evo, Feb 27, 2015 at 1:12 AM

    3. Medical Sciences

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      Latest: ...incarceration or institutionalization can delay emotional growth WWGD, Feb 24, 2015 at 10:00 PM

    4. Programming and Computer Science

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      Latest: Run Javascript after DOM is ready Silicon Waffle, Feb 27, 2015 at 1:01 AM

    5. Earth

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      Latest: Hell hasn't frozen over, but Lake Erie has (almost) Borg, Feb 26, 2015 at 8:43 AM

    6. Computing and Technology

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      Computing and Technology

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      1. Calculators

      Latest: How to find the Wronskian on Ti-89? jedishrfu, Feb 26, 2015 at 9:48 AM

  7. PF Lounge

    1. General Discussion

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      General Discussion

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      1. Current Events

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      Latest: Random Thoughts part 4 zoobyshoe, Feb 27, 2015 at 1:01 AM

    2. Science Fiction and Fantasy

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      Science Fiction and Fantasy

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      1. Science Fiction Writing

      Latest: Killing Earth with a cosmic flashlight AmoebaMan, Feb 26, 2015 at 9:17 PM

    3. Feedback and Announcements

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      Feedback and Announcements

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      1. PF Member Awards 2014

      Latest: Finding posts I "liked" Greg Bernhardt, Feb 25, 2015 at 8:22 PM

    4. New Member Introductions

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      Latest: An introduction e.bar.goum, Feb 27, 2015 at 12:09 AM