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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: Massive cable and massive pulley Yoni V, Mar 1, 2015 at 1:24 PM

    2. Science and Math Textbooks

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      Latest: Introductory Book on Group Theory for HS freshman? Stephen Tashi, Mar 1, 2015 at 11:28 AM

    3. Academic Guidance

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      Latest: Ohio State vs. WUSTL vs. Notre Dame for particle cosmology theory? Catria, Mar 1, 2015 at 1:19 PM

    4. Career Guidance

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      Latest: Is medical physic a good career option? blakeab, Mar 1, 2015 at 1:31 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? Zaent, Mar 1, 2015 at 11:07 AM

  2. Physics

    1. General Physics

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      Latest: Moment of inertia Y*_max, Mar 1, 2015 at 1:21 PM

    2. Classical Physics

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      Latest: Mythbusters: Blow your own sail A.T., Mar 1, 2015 at 12:37 PM

    3. Quantum Physics

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      Latest: Energy delta of entanglement TrickyDicky, Mar 1, 2015 at 1:11 PM

    4. Special and General Relativity

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      Latest: Black Hole Event Horizon exists? Nugatory, Mar 1, 2015 at 1:27 PM

    5. Atomic, Solid State, Comp. Physics

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      Latest: Reciprocal lattice vector M Quack, Mar 1, 2015 at 1:24 PM

    6. High Energy, Nuclear, Particle Physics

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      Latest: What exactly does it mean for an isotope to be stable? nikkkom, Mar 1, 2015 at 12:27 PM

    7. Beyond the Standard Model

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      Latest: Hubble Constant and Entropy Jimster41, Mar 1, 2015 at 1:27 PM

  3. Astronomy and Cosmology

    1. Astronomy and Astrophysics

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      Latest: Asteroid 99942 Apophis impacting the Earth in 2029 Jon Richfield, Mar 1, 2015 at 9:26 AM

    2. Cosmology

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      Latest: Extremely large Black Hole discovered 900M years after BB wabbit, Mar 1, 2015 at 12:51 PM

    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: Universal? or Multiple Units of Measure? Lobos, Mar 1, 2015 at 1:26 PM

    2. Calculus

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      Latest: Really hard integrals? dextercioby, Mar 1, 2015 at 7:07 AM

    3. Differential Equations

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      Latest: Can't understand solution by substitution, any help? MarcL, Mar 1, 2015 at 10:23 AM

    4. Topology and Analysis

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      Latest: Clarification about Poincaré's conjecture jk22, Mar 1, 2015 at 1:26 PM

    5. Linear and Abstract Algebra

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      Latest: double dot product HallsofIvy, Mar 1, 2015 at 9:45 AM

    6. Differential Geometry

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      Messages:
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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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      38,796
      Latest: confusion over definition of relations in set theory Stephen Tashi, Mar 1, 2015 at 11:32 AM

    8. Math Software and LaTeX

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      Latest: matlab intro cenicitas, Mar 1, 2015 at 9:40 AM

  5. Engineering

    1. General Engineering

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      35,520
      Latest: YOU!: Fix the US Energy Crisis OmCheeto, Mar 1, 2015 at 12:31 PM

    2. Engineering Systems and Design

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      Latest: "Members of a frame are axially inextensible" implication? Chestermiller, Mar 1, 2015 at 12:13 PM

    3. Mechanical Engineering

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      Mechanical Engineering

      Sub-Forums

      1. Aerospace Engineering

      2. Automotive Engineering

      Latest: Drawing and meshing involute bevel gears in CAD Baluncore, Mar 1, 2015 at 1:21 PM

    4. Electrical Engineering

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      Latest: ringing frequency Baluncore, Mar 1, 2015 at 1:32 PM

    5. Materials and Chemical Engineering

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      Latest: Good absorber = good emitter? fog37, Mar 1, 2015 at 1:01 PM

    6. Nuclear Engineering

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      Messages:
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      Latest: An idea for a Pu-238 replacement for NASA space missions Evanish, Mar 1, 2015 at 12:31 PM

  6. Other Sciences

    1. Chemistry

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      Latest: The Smell of Garlic and Enzymatic Oxidation epenguin, Mar 1, 2015 at 12:27 PM

    2. Biology

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      Latest: What might cell membranes look like on Titan? jerromyjon, Mar 1, 2015 at 1:29 PM

    3. Medical Sciences

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      Latest: Can pull up exercise increase height? jobyts, Feb 28, 2015 at 11:37 PM

    4. Programming and Computer Science

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      Latest: Rounding up Random Numbers Lukejambo, Mar 1, 2015 at 11:45 AM

    5. Earth

      Discussions:
      1,740
      Messages:
      20,346
      Latest: Large crater in Siberia D H, Feb 27, 2015 at 4:49 PM

    6. Computing and Technology

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      Computing and Technology

      Sub-Forums

      1. Calculators

      Latest: Is 4GB of VRAM overkill for 1080p gaming? Hercuflea, Feb 28, 2015 at 5:51 AM

  7. PF Lounge

    1. General Discussion

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      General Discussion

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      1. Current Events

      2. History and Humanities

      3. Photography

      4. Fun, Photos and Games

      5. Relationships

      6. Social Sciences

      Latest: The standard of living is going down for the average American Ghost117, Mar 1, 2015 at 1:30 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 Bandersnatch, Mar 1, 2015 at 12:20 PM

    3. Feedback and Announcements

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      Feedback and Announcements

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      1. PF Member Awards 2014

      Latest: Chat Groups? Greg Bernhardt, Mar 1, 2015 at 9:40 AM

    4. New Member Introductions

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      Latest: An introduction Eddy C., Mar 1, 2015 at 1:31 PM