Login or Sign up!

Physics Forums - The Fusion of Science and Community

  1. Science Education

    1. Homework and Coursework Questions

      Discussions:
      238,741
      Messages:
      1,275,079

      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: Proving limits? jedishrfu, Feb 27, 2015 at 9:13 AM

    2. Science and Math Textbooks

      Discussions:
      4,131
      Messages:
      23,615
      Latest: Math Textbook Series. NumericalFEA, Feb 27, 2015 at 4:57 AM

    3. Academic Guidance

      Discussions:
      21,250
      Messages:
      174,740
      Latest: Is it worth it to pay for a certificate from edX? Ahmad Kishki, Feb 27, 2015 at 8:57 AM

    4. Career Guidance

      Discussions:
      4,993
      Messages:
      39,853
      Latest: How to win a fields medal QuantumCurt, Feb 27, 2015 at 9:17 AM

    5. Educators and Teaching

      Discussions:
      300
      Messages:
      3,731
      Latest: Why are students permitted to use calculators on AP math? Ophiolite, Feb 27, 2015 at 2:55 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:
      36,719
      Messages:
      294,301
      Latest: How does the dark and bright fringes form ? yuganes warman, Feb 27, 2015 at 9:16 AM

    2. Classical Physics

      Discussions:
      20,723
      Messages:
      148,459
      Latest: Mythbusters: Blow your own sail A.T., Feb 27, 2015 at 9:07 AM

    3. Quantum Physics

      Discussions:
      17,751
      Messages:
      176,199
      Latest: Question on wave function of free particle jtbell, Feb 27, 2015 at 9:08 AM

    4. Special and General Relativity

      Discussions:
      14,636
      Messages:
      214,050
      Latest: How Do Spinors Fit in With Differential Geometry bolbteppa, Feb 27, 2015 at 9:17 AM

    5. Atomic, Solid State, Comp. Physics

      Discussions:
      4,973
      Messages:
      23,949
      Latest: Expanding the Hamiltonian around a point of symmetry DrDu, Feb 27, 2015 at 8:33 AM

    6. High Energy, Nuclear, Particle Physics

      Discussions:
      5,811
      Messages:
      41,444
      Latest: Experimental Black Hole Physics ChrisVer, Feb 27, 2015 at 7:40 AM

    7. Beyond the Standard Model

      Discussions:
      4,658
      Messages:
      57,415
      Latest: Hubble Constant and Entropy wabbit, Feb 27, 2015 at 9:23 AM

  3. Astronomy and Cosmology

    1. Astronomy and Astrophysics

      Discussions:
      9,750
      Messages:
      86,931
      Latest: Earth and moon barycenter question. Garth, Feb 27, 2015 at 4:10 AM

    2. Cosmology

      Discussions:
      4,868
      Messages:
      62,871
      Latest: Thinking outside the box. jedishrfu, Feb 27, 2015 at 8:23 AM

    3. Stargazing and Telescopes

      Discussions:
      423
      Messages:
      4,303
      Latest: Planning to buy a first telescope? PAllen, Feb 26, 2015 at 10:11 PM

  4. Mathematics

    1. General Math

      Discussions:
      15,546
      Messages:
      111,826
      Latest: How to best read Euclid's Elements jedishrfu, Feb 27, 2015 at 8:28 AM

    2. Calculus

      Discussions:
      12,885
      Messages:
      74,168
      Latest: Slight confusion in proof of Hadamard's Lemma "Don't panic!", Feb 27, 2015 at 6:09 AM

    3. Differential Equations

      Discussions:
      4,652
      Messages:
      20,958
      Latest: Piecewise MATLAB ode45 problem for Lennard-Jones DrClaude, Feb 27, 2015 at 8:22 AM

    4. Topology and Analysis

      Discussions:
      1,029
      Messages:
      6,481
      Latest: Taylor series wabbit, Feb 27, 2015 at 6:34 AM

    5. Linear and Abstract Algebra

      Discussions:
      8,586
      Messages:
      53,134
      Latest: Constructing a field of 4 elements mathman, Feb 26, 2015 at 6:51 PM

    6. Differential Geometry

      Discussions:
      3,448
      Messages:
      21,115
      Latest: Stuck with tensors, need a push Corbeau, Feb 27, 2015 at 9:13 AM

    7. Set Theory, Logic, Probability, Statistics

      Discussions:
      6,912
      Messages:
      38,775
      Latest: confusion over definition of relations in set theory "Don't panic!", Feb 27, 2015 at 6:31 AM

    8. Math Software and LaTeX

      Discussions:
      4,650
      Messages:
      19,459
      Latest: Understanding this Computer program Slightly, Feb 26, 2015 at 8:32 PM

  5. Engineering

    1. General Engineering

      Discussions:
      5,139
      Messages:
      35,484
      Latest: List of Metals or Alloys With Fatigue Limits? thankz, Feb 26, 2015 at 12:30 PM

    2. Engineering Systems and Design

      Discussions:
      1,883
      Messages:
      11,685
      Latest: 4 in lift mechanism using a continuous servo? imawesomeYKI, Feb 27, 2015 at 7:34 AM

    3. Mechanical Engineering

      Discussions:
      10,385
      Messages:
      65,492

      Mechanical Engineering

      Sub-Forums

      1. Aerospace Engineering

      2. Automotive Engineering

      Latest: Determine the Rate of Change of Pressure Across a Valve HuskyNamedNala, Feb 27, 2015 at 7:10 AM

    4. Electrical Engineering

      Discussions:
      15,903
      Messages:
      110,888
      Latest: 12V Wind Turbine - Voltage question Merlin3189, Feb 27, 2015 at 9:08 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:
      34,382
      Latest: Question about radioactivity Hologram0110, Feb 27, 2015 at 9:17 AM

  6. Other Sciences

    1. Chemistry

      Discussions:
      7,095
      Messages:
      37,354
      Latest: Corrosion in metal pipe carrying DC current? amrmohammed, Feb 26, 2015 at 10:40 PM

    2. Biology

      Discussions:
      5,745
      Messages:
      46,822
      Latest: "What colour is this dress" craze Bystander, Feb 27, 2015 at 9:24 AM

    3. Medical Sciences

      Discussions:
      2,170
      Messages:
      22,190
      Latest: ...incarceration or institutionalization can delay emotional growth WWGD, Feb 24, 2015 at 10:00 PM

    4. Programming and Computer Science

      Discussions:
      4,596
      Messages:
      28,479
      Latest: Creating new algorithm like PID ulianjay, Feb 27, 2015 at 4:42 AM

    5. Earth

      Discussions:
      1,740
      Messages:
      20,342
      Latest: Hell hasn't frozen over, but Lake Erie has (almost) Borg, Feb 26, 2015 at 8:43 AM

    6. Computing and Technology

      Discussions:
      5,983
      Messages:
      43,401

      Computing and Technology

      Sub-Forums

      1. Calculators

      Latest: Mobile browsers used to browse the web for free. aleemudasir, Feb 27, 2015 at 9:22 AM

  7. PF Lounge

    1. General Discussion

      Discussions:
      38,520
      Messages:
      980,247

      General Discussion

      Sub-Forums

      1. Current Events

      2. History and Humanities

      3. Photography

      4. Fun, Photos and Games

      5. Relationships

      6. Social Sciences

      Latest: Today I learned OmCheeto, Feb 27, 2015 at 8:48 AM

    2. Science Fiction and Fantasy

      Discussions:
      619
      Messages:
      10,795

      Science Fiction and Fantasy

      Sub-Forums

      1. Science Fiction Writing

      Latest: Killing Earth with a cosmic flashlight AmoebaMan, Feb 26, 2015 at 9:17 PM

    3. Feedback and Announcements

      Discussions:
      3,721
      Messages:
      42,817

      Feedback and Announcements

      Sub-Forums

      1. PF Member Awards 2014

      Latest: when people help they are not allowed to include answers? Greg Bernhardt, Feb 27, 2015 at 9:12 AM

    4. New Member Introductions

      Discussions:
      1,241
      Messages:
      4,067
      Latest: Hi Suraj M, Feb 27, 2015 at 8:47 AM