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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: Energy conservation and periodic motion arpon, Mar 2, 2015 at 9:00 AM

    2. Science and Math Textbooks

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      Latest: scholars 4 hire com scholars4hire, Mar 2, 2015 at 7:25 AM

    3. Academic Guidance

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      Latest: How To Fix My Weak Physics Foundations? jedishrfu, Mar 2, 2015 at 7:07 AM

    4. Career Guidance

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      Latest: Concerned about ability to succeed in job/grad school jedishrfu, Mar 2, 2015 at 12:32 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: Magnetic levitation using alternating current mfb, Mar 2, 2015 at 8:28 AM

    2. Classical Physics

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      Latest: Mythbusters: Blow your own sail A.T., Mar 2, 2015 at 8:54 AM

    3. Quantum Physics

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      Latest: Uncertainty Principle cause infinite wavefunction solutions? a dull boy, Mar 2, 2015 at 8:48 AM

    4. Special and General Relativity

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      Latest: Quick one-line on lowering indices ChrisVer, Mar 2, 2015 at 8:56 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: Horizontal Branch Star liometopum, Mar 2, 2015 at 8:31 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: The most difficult equation in mathematics ChrisVer, Mar 2, 2015 at 8:18 AM

    2. Calculus

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      Latest: Multivariable limit wabbit, Mar 2, 2015 at 7:50 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 6:40 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 Baluncore, Mar 2, 2015 at 7:04 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

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      1. Aerospace Engineering

      2. Automotive Engineering

      Latest: Race car suspension Class loganc_racer, Mar 2, 2015 at 8:47 AM

    4. Electrical Engineering

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      Latest: What happens if "hot" wire touches Earth ground? jim hardy, Mar 2, 2015 at 8:47 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 QuantumPion, Mar 2, 2015 at 7:19 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: Neanderthal fossils... never frozen? Evo, Mar 1, 2015 at 10:34 PM

    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

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      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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      Latest: Russian opposition leader ,a putin critic shot dead Czcibor, Mar 2, 2015 at 8:23 AM

    2. Science Fiction and Fantasy

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      Science Fiction and Fantasy

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      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! AGNuke, Mar 2, 2015 at 8:04 AM

    4. New Member Introductions

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      Latest: water loss calculation Bennett Siwane, Mar 2, 2015 at 8:08 AM