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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: nth derivative Fourier transform property ElijahRockers, Feb 26, 2015 at 6:29 PM

    2. Science and Math Textbooks

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      Latest: Lagrangian and Hamiltonian mechanics snatchingthepi, Feb 26, 2015 at 5:52 PM

    3. Academic Guidance

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      Latest: How does one know if he/she is a scientist or an Engineer? Choppy, Feb 26, 2015 at 6:32 PM

    4. Career Guidance

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      Latest: Is a bachelor in Physics a good idea for Engineering? lh9713, Feb 26, 2015 at 4:13 PM

    5. Educators and Teaching

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      Latest: Why are students permitted to use calculators on AP math? Bystander, Feb 26, 2015 at 4:16 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: Does radioactive decay slow in a particle accelerator mathman, Feb 26, 2015 at 6:33 PM

    2. Classical Physics

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      Latest: Mythbusters: Blow your own sail A.T., Feb 26, 2015 at 5:20 PM

    3. Quantum Physics

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      Latest: Stimulated emission in Lasers Simon Bridge, Feb 26, 2015 at 6:22 PM

    4. Special and General Relativity

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      Latest: Quick calculation check please name123, Feb 26, 2015 at 5:50 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: Ceres at 1 lightsecond, 36% size of full moon mfb, Feb 26, 2015 at 6:00 PM

    2. Cosmology

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      Latest: Distribution of energy after matter/antimatter annihilation Chalnoth, Feb 26, 2015 at 6:34 PM

    3. Stargazing and Telescopes

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      Latest: Fake magnification and other information wabbit, Feb 26, 2015 at 4:32 PM

  4. Mathematics

    1. General Math

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      Latest: Find the pattern: 12, 44, 130, 342, 840 ... zoki85, Feb 26, 2015 at 1:05 PM

    2. Calculus

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      Latest: Calculus Michael Spivak 3th ed. Pag 46: Function as a rule wabbit, Feb 26, 2015 at 2:11 PM

    3. Differential Equations

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      Latest: system of diff eqs modeling tanks of brine nate9519, Feb 26, 2015 at 4:00 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 PsychonautQQ, Feb 26, 2015 at 5:47 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. Adel Makram, Feb 26, 2015 at 7:50 AM

    8. Math Software and LaTeX

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      Latest: Simplify Matlab for/if statements further DrClaude, Feb 26, 2015 at 3:21 AM

  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 phyzguy, Feb 25, 2015 at 11:21 AM

    3. Mechanical Engineering

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      Mechanical Engineering

      Sub-Forums

      1. Aerospace Engineering

      2. Automotive Engineering

      Latest: Determine the Rate of Change of Pressure Across a Valve russ_watters, Feb 26, 2015 at 5:52 PM

    4. Electrical Engineering

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      Latest: DC power supply 12V 2A etf, Feb 26, 2015 at 6:36 PM

    5. Materials and Chemical Engineering

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      Latest: Efficient aluminum foil heat transfer design Butters, Feb 26, 2015 at 2:06 PM

    6. Nuclear Engineering

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      Latest: The Nuclear Power Thread mheslep, Feb 26, 2015 at 5:21 PM

  6. Other Sciences

    1. Chemistry

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      Latest: Radiation dosage and half - life Calpalned, Feb 26, 2015 at 6:23 PM

    2. Biology

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      Latest: Why are all other hominids dead? DiracPool, Feb 26, 2015 at 6:18 PM

    3. Medical Sciences

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      Latest: Surgical Neurology International: trustworthy journal? Pythagorean, Feb 26, 2015 at 6:18 PM

    4. Programming and Computer Science

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      Latest: Need help solving this problem TheQuizmaster, Feb 26, 2015 at 6:36 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

      Sub-Forums

      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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      6. Social Sciences

      Latest: The standard of living is going down for the average American russ_watters, Feb 26, 2015 at 5:56 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 5:24 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: Hello, I'm on board! Greg Bernhardt, Feb 26, 2015 at 5:57 PM