Login or Sign up!

Physics Forums - The Fusion of Science and Community

  1. Science Education

    1. Homework and Coursework Questions

      Discussions:
      238,780
      Messages:
      1,275,315

      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: Newly Defined Functions Greychu, Feb 28, 2015 at 12:57 AM

    2. Science and Math Textbooks

      Discussions:
      4,133
      Messages:
      23,630
      Latest: Looking for a good book explaining physics of a quadcopter Chris Haskin, Feb 28, 2015 at 12:15 AM

    3. Academic Guidance

      Discussions:
      21,252
      Messages:
      174,759
      Latest: Is the Math/Science Taught at MIT, Caltech, etc. Harder? Maylis, Feb 28, 2015 at 12:45 AM

    4. Career Guidance

      Discussions:
      4,995
      Messages:
      39,872
      Latest: DoE/SULI acceptances? samnorris93, Feb 27, 2015 at 11:28 PM

    5. Educators and Teaching

      Discussions:
      300
      Messages:
      3,734
      Latest: Why are students permitted to use calculators on AP math? momof4, Feb 27, 2015 at 11:30 AM

    6. STEM Learning Materials

      Discussions:
      617
      Messages:
      3,717
      Latest: Problem Book in Relativity and Gravitation, online, free bcrowell, Feb 25, 2015 at 4:30 PM

  2. Physics

    1. General Physics

      Discussions:
      36,731
      Messages:
      294,395
      Latest: Normal force cancels out the force of gravity? akshaya, Feb 28, 2015 at 12:50 AM

    2. Classical Physics

      Discussions:
      20,725
      Messages:
      148,477
      Latest: Charged objects attracted to neutral objects jasonleroy, Feb 27, 2015 at 7:13 PM

    3. Quantum Physics

      Discussions:
      17,753
      Messages:
      176,227
      Latest: Proton through a Particle Accelerator Drakkith, Feb 27, 2015 at 11:45 PM

    4. Special and General Relativity

      Discussions:
      14,636
      Messages:
      214,058
      Latest: Interplay of space and time in Spacetime invariant interval DaleSpam, Feb 27, 2015 at 10:47 PM

    5. Atomic, Solid State, Comp. Physics

      Discussions:
      4,973
      Messages:
      23,952
      Latest: Molecular Hydrogen absorption spectrum Quantum Defect, Feb 27, 2015 at 1:57 PM

    6. High Energy, Nuclear, Particle Physics

      Discussions:
      5,811
      Messages:
      41,457
      Latest: Nuclear Fusion: Why is energy created from mass? Orodruin, Feb 28, 2015 at 12:32 AM

    7. Beyond the Standard Model

      Discussions:
      4,658
      Messages:
      57,421
      Latest: Combined fourth quarter MIP poll (for most important QG papers) marcus, Feb 27, 2015 at 10:28 PM

  3. Astronomy and Cosmology

    1. Astronomy and Astrophysics

      Discussions:
      9,752
      Messages:
      86,955
      Latest: Doubts about nebulae and star formation russ_watters, Feb 27, 2015 at 9:44 PM

    2. Cosmology

      Discussions:
      4,870
      Messages:
      62,881
      Latest: Thinking outside the box Drakkith, Feb 27, 2015 at 11:30 PM

    3. Stargazing and Telescopes

      Discussions:
      423
      Messages:
      4,304
      Latest: Planning to buy a first telescope? jim hardy, Feb 27, 2015 at 12:44 PM

  4. Mathematics

    1. General Math

      Discussions:
      15,548
      Messages:
      111,838
      Latest: Sum and difference with radians. Tyrion101, Feb 28, 2015 at 12:49 AM

    2. Calculus

      Discussions:
      12,888
      Messages:
      74,191
      Latest: Stuck getting derivative when can't isolate my variable Mark44, Feb 28, 2015 at 12:37 AM

    3. Differential Equations

      Discussions:
      4,654
      Messages:
      20,963
      Latest: Fourier Transform joshmccraney, Feb 28, 2015 at 12:15 AM

    4. Topology and Analysis

      Discussions:
      1,029
      Messages:
      6,482
      Latest: Maxmimum\Minimum modulus principle mathwonk, Feb 27, 2015 at 6:17 PM

    5. Linear and Abstract Algebra

      Discussions:
      8,589
      Messages:
      53,142
      Latest: Struggling to understand a field theorm's corollary micromass, Feb 27, 2015 at 6:06 PM

    6. Differential Geometry

      Discussions:
      3,448
      Messages:
      21,116
      Latest: Stuck with tensors, need a push Fredrik, Feb 27, 2015 at 11:01 AM

    7. Set Theory, Logic, Probability, Statistics

      Discussions:
      6,912
      Messages:
      38,788
      Latest: Drawing three cards - combined probability Lenus, Feb 27, 2015 at 7:56 PM

    8. Math Software and LaTeX

      Discussions:
      4,651
      Messages:
      19,462
      Latest: Fitting an ellipse through 3-d data SubTachyon, Feb 27, 2015 at 4:36 PM

  5. Engineering

    1. General Engineering

      Discussions:
      5,142
      Messages:
      35,493
      Latest: Need help calculating the heat of a wire wrapped Quantum Defect, Feb 27, 2015 at 9:40 PM

    2. Engineering Systems and Design

      Discussions:
      1,883
      Messages:
      11,686
      Latest: 4 in lift mechanism using a continuous servo? billy_joule, Feb 27, 2015 at 1:00 PM

    3. Mechanical Engineering

      Discussions:
      10,386
      Messages:
      65,513

      Mechanical Engineering

      Sub-Forums

      1. Aerospace Engineering

      2. Automotive Engineering

      Latest: How do I calculate moment of inertia in a wheel? Dr.D, Feb 27, 2015 at 10:19 PM

    4. Electrical Engineering

      Discussions:
      15,904
      Messages:
      110,915
      Latest: What is the polarity of a Pn junction diode ovais, Feb 28, 2015 at 12:13 AM

    5. Materials and Chemical Engineering

      Discussions:
      2,566
      Messages:
      10,212
      Latest: Buried water pipes freeze-has been cold-the sun comes out 256bits, Feb 27, 2015 at 1:35 AM

    6. Nuclear Engineering

      Discussions:
      1,545
      Messages:
      34,395
      Latest: The Nuclear Power Thread Jon Richfield, Feb 28, 2015 at 12:25 AM

  6. Other Sciences

    1. Chemistry

      Discussions:
      7,097
      Messages:
      37,361
      Latest: term 'Iso ' in naming (common name) SteamKing, Feb 27, 2015 at 10:36 PM

    2. Biology

      Discussions:
      5,744
      Messages:
      46,818
      Latest: Introductions to Quantum-biology? tijana, Feb 27, 2015 at 8:09 PM

    3. Medical Sciences

      Discussions:
      2,170
      Messages:
      22,193
      Latest: Can pull up exercise increase height? Silicon Waffle, Feb 27, 2015 at 10:56 PM

    4. Programming and Computer Science

      Discussions:
      4,596
      Messages:
      28,481
      Latest: Run Javascript after DOM is ready Filip Larsen, Feb 27, 2015 at 2:37 PM

    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

      Discussions:
      5,983
      Messages:
      43,409

      Computing and Technology

      Sub-Forums

      1. Calculators

      Latest: Need MP3 player. Should I just get a phone? russ_watters, Feb 28, 2015 at 12:45 AM

  7. PF Lounge

    1. General Discussion

      Discussions:
      38,523
      Messages:
      980,339

      General Discussion

      Sub-Forums

      1. Current Events

      2. History and Humanities

      3. Photography

      4. Fun, Photos and Games

      5. Relationships

      6. Social Sciences

      Latest: 'Star Trek' icon Leonard Nimoy dies at age 83 nsaspook, Feb 28, 2015 at 12:38 AM

    2. Science Fiction and Fantasy

      Discussions:
      619
      Messages:
      10,803

      Science Fiction and Fantasy

      Sub-Forums

      1. Science Fiction Writing

      Latest: Consequences of denser atmosphere on Earth-like planet Bystander, Feb 27, 2015 at 3:58 PM

    3. Feedback and Announcements

      Discussions:
      3,722
      Messages:
      42,819

      Feedback and Announcements

      Sub-Forums

      1. PF Member Awards 2014

      Latest: Scribble pad along with normal posting jedishrfu, Feb 27, 2015 at 11:07 PM

    4. New Member Introductions

      Discussions:
      1,248
      Messages:
      4,082
      Latest: Hello, I'm Zac jedishrfu, Feb 27, 2015 at 10:55 PM