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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: Finding the maximum compression of a spring kappakeepo, Feb 26, 2015 at 11:55 PM

    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: Help identify traits for Engineering Vs Research e.bar.goum, Feb 26, 2015 at 11:44 PM

    5. Educators and Teaching

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      Latest: Why are students permitted to use calculators on AP math? momof4, Feb 26, 2015 at 11:43 PM

    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 26, 2015 at 11:40 PM

    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: Quick calculation check please PeterDonis, Feb 26, 2015 at 8:15 PM

    5. Atomic, Solid State, Comp. Physics

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      Latest: Reciprocal lattice vector M Quack, Feb 26, 2015 at 10:40 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: Can black holes die? Haelfix, Feb 26, 2015 at 10:41 PM

    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 ... Raghav Gupta, Feb 26, 2015 at 10:43 PM

    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: Evaluate 2 logistic functions for the best x to minimize OR. mfb, Feb 26, 2015 at 6:54 PM

    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: Thevenin's & Kirchhoff's law, in a circuit ahmed markhoos, Feb 26, 2015 at 11:20 PM

    5. Materials and Chemical Engineering

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      Latest: Buried water pipes freeze-has been cold-the sun comes out WVBrady, Feb 26, 2015 at 11:16 PM

    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: Eye color of hominids Simon Bridge, Feb 26, 2015 at 11:52 PM

    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: BPSK Fiber Optic Communication technique module. PrakashPrasad, Feb 26, 2015 at 10:02 PM

    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

      2. History and Humanities

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      4. Fun, Photos and Games

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      Latest: Anyone Watch "Mad Men"? Astronuc, Feb 26, 2015 at 11:00 PM

    2. Science Fiction and Fantasy

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      Science Fiction and Fantasy

      Sub-Forums

      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 Jason Healy, Feb 26, 2015 at 11:52 PM