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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 PeroK, Mar 2, 2015 at 2:43 PM

    2. Science and Math Textbooks

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      Latest: Can't remember where I read this! Shyan, Mar 2, 2015 at 12:44 PM

    3. Academic Guidance

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      Latest: Physics Minor? thegreenlaser, Mar 2, 2015 at 2:10 PM

    4. Career Guidance

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      Latest: Concerned about ability to succeed in job/grad school Choppy, Mar 2, 2015 at 1:23 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: Derivation of wave equation and wave speed alexao1111, Mar 2, 2015 at 1:59 PM

    2. Classical Physics

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      Latest: Heating a metallic rod from one end by continuous heat flux Adel Makram, Mar 2, 2015 at 2:11 PM

    3. Quantum Physics

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      Latest: First photograph of light as both a particle and wave Jazzdude, Mar 2, 2015 at 2:33 PM

    4. Special and General Relativity

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      Latest: Quick calculation check please name123, Mar 2, 2015 at 2:41 PM

    5. Atomic, Solid State, Comp. Physics

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      Latest: Reciprocal lattice vector M Quack, Mar 2, 2015 at 2:00 PM

    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 1:36 PM

  3. Astronomy and Cosmology

    1. Astronomy and Astrophysics

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      Latest: Ceres at 1 lightsecond, 36% size of full moon marcus, Mar 2, 2015 at 2:42 PM

    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: Getting worse at mental arithmetic FuturePhysicist, Mar 2, 2015 at 2:38 PM

    2. Calculus

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      Latest: Substitution in integral PeroK, Mar 2, 2015 at 2:00 PM

    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: Measurability of a function with finite codomain lavinia, Mar 2, 2015 at 12:26 PM

    5. Linear and Abstract Algebra

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      Latest: su(2), so(3) and their representations mathwonk, Mar 2, 2015 at 11:54 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: Looking for calculus program to find volume abcdef, Mar 2, 2015 at 1:38 PM

  5. Engineering

    1. General Engineering

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      Latest: Required force to rotate the Engine piston CharliePSea, Mar 2, 2015 at 2:05 PM

    2. Engineering Systems and Design

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      Latest: Control design for PWM converter Hubert Tchio, Mar 2, 2015 at 2:34 PM

    3. Mechanical Engineering

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      Mechanical Engineering

      Sub-Forums

      1. Aerospace Engineering

      2. Automotive Engineering

      Latest: Pressure regulator flow rate Quantum Defect, Mar 2, 2015 at 2:39 PM

    4. Electrical Engineering

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      Latest: difference between emitter and collector? thankz, Mar 2, 2015 at 2:02 PM

    5. Materials and Chemical Engineering

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      Latest: Density of holes in valence band mfb, Mar 2, 2015 at 12:58 PM

    6. Nuclear Engineering

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      Latest: An idea for a Pu-238 replacement for NASA space missions Hologram0110, Mar 2, 2015 at 1:31 PM

  6. Other Sciences

    1. Chemistry

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      Latest: How does a catalyst effect equilibrium? Kanesan, Mar 2, 2015 at 2:41 PM

    2. Biology

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      Latest: What might cell membranes look like on Titan? jim mcnamara, Mar 2, 2015 at 12:05 PM

    3. Medical Sciences

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      Latest: Is there a way to measure light frequencies of brainwaves phinds, Mar 2, 2015 at 12:06 PM

    4. Programming and Computer Science

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      Latest: [Fortran] Rounding up Random Numbers DaveC426913, Mar 2, 2015 at 1:31 PM

    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: Is 4GB of VRAM overkill for 1080p gaming? Hercuflea, Mar 2, 2015 at 10:56 AM

  7. PF Lounge

    1. General Discussion

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      General Discussion

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      Latest: Best Songs Ever 2 thankz, Mar 2, 2015 at 2:31 PM

    2. Science Fiction and Fantasy

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      Science Fiction and Fantasy

      Sub-Forums

      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! Greg Bernhardt, Mar 2, 2015 at 11:06 AM

    4. New Member Introductions

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      Latest: Hello everyone! Greg Bernhardt, Mar 2, 2015 at 10:11 AM