Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Physics Forums - The Fusion of Science and Community

  1. Science Education

    1. Homework and Coursework Questions

      Discussions:
      248,328
      Messages:
      1,402,727

      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: A falling stone takes 0.28 s to travel past a window 2.2 m..

    2. Science and Math Textbooks

      Discussions:
      4,718
      Messages:
      29,169
      Latest: A First Course in General Relativity

    3. Open Physics Practice Problems

      Discussions:
      3,820
      Messages:
      3,855
      Latest: Adiabatic expansion in a steady flow question

    4. Academic Guidance

      Discussions:
      23,271
      Messages:
      193,115
      Latest: Community college GPA and Chem grad school?

    5. Educators and Teaching

      Discussions:
      451
      Messages:
      5,935
      Latest: Advice on milligram/centigram precision scale

    6. Career Guidance

      Discussions:
      5,750
      Messages:
      46,812
      Latest: MBA with engineering

  2. Physics

    1. General Physics

      Discussions:
      41,351
      Messages:
      341,904
      Latest: what would a universe look like if it had 2 time dimensions?

    2. Classical Physics

      Discussions:
      22,262
      Messages:
      164,576
      Latest: Explaining Rolling Motion - Comments

    3. Quantum Physics

      Discussions:
      19,997
      Messages:
      210,586
      Latest: The typical and the exceptional in physics

    4. Special and General Relativity

      Discussions:
      16,534
      Messages:
      243,162
      Latest: Special Relativity Approximation of Gravitation

    5. Atomic, Solid State, Comp. Physics

      Discussions:
      5,690
      Messages:
      27,301
      Latest: Superconductivity & the Meissner Effect

    6. High Energy, Nuclear, Particle Physics

      Discussions:
      6,605
      Messages:
      48,914
      Latest: Weak force - only free neutrons decay?

    7. Beyond the Standard Model

      Discussions:
      5,035
      Messages:
      61,920
      Latest: 5 Higgs-like bosons -- natural supersymmetry required?

  3. Astronomy and Cosmology

    1. Astronomy and Astrophysics

      Discussions:
      11,334
      Messages:
      104,807
      Latest: Need help with some calculations with gravitational waves

    2. Cosmology

      Discussions:
      5,763
      Messages:
      74,478
      Latest: What do you think of the "Now Hypothesis"?

  4. Mathematics

    1. General Math

      Discussions:
      17,406
      Messages:
      127,571
      Latest: Irrationality for Dummies - Comments

    2. Calculus

      Discussions:
      13,782
      Messages:
      80,384
      Latest: Why is Stoke's theorem of a closed path equal to zero?

    3. Differential Equations

      Discussions:
      5,013
      Messages:
      23,186
      Latest: Interval of existence and uniqueness of a separable 1st ODE

    4. Topology and Analysis

      Discussions:
      1,213
      Messages:
      8,040
      Latest: Need help with peak deconvolution

    5. Linear and Abstract Algebra

      Discussions:
      9,077
      Messages:
      56,177
      Latest: Components of functions in vector spaces

    6. Differential Geometry

      Discussions:
      3,670
      Messages:
      23,057
      Latest: Unique separation of the vertical and horizontal spaces?

    7. Set Theory, Logic, Probability, Statistics

      Discussions:
      7,196
      Messages:
      42,662
      Latest: Deriving convolution

    8. Math Software and LaTeX

      Discussions:
      4,926
      Messages:
      21,010
      Latest: Tweaking Latex rendering (for GitHub pages)

  5. Engineering

    1. General Engineering

      Discussions:
      7,697
      Messages:
      53,601
      Latest: EPDM Food grade / non food grade

    2. Mechanical Engineering

      Discussions:
      11,495
      Messages:
      76,653
      Latest: From toy to a real machine

    3. Electrical Engineering

      Discussions:
      17,573
      Messages:
      133,237
      Latest: Determine minimum working frequency from the V*usec value of a pulse transformer?

    4. Materials and Chemical Engineering

      Discussions:
      2,945
      Messages:
      12,041
      Latest: Low impact energy, high impact toughness - comparisons

    5. Nuclear Engineering

      Discussions:
      1,737
      Messages:
      36,893
      Latest: Tokamak News and Queries

  6. Other Sciences

    1. Chemistry

      Discussions:
      7,699
      Messages:
      42,556
      Latest: How to make 0.2 M Tris-Acetate Buffer pH 6

    2. Programming and Computer Science

      Discussions:
      5,189
      Messages:
      34,980
      Latest: Problems when averaging a value

    3. Biology and Medical

      Discussions:
      8,556
      Messages:
      75,268
      Latest: How many times does an average protein fold?

    4. Computing and Technology

      Discussions:
      6,175
      Messages:
      46,973
      Latest: Foveon X3 Quattro direct image sensor: any opinions?

    5. Earth

      Discussions:
      1,884
      Messages:
      22,506
      Latest: A busy 3 days for quakes in the SW Pacific

  7. PF Lounge

    1. General Discussion

      Discussions:
      39,757
      Messages:
      1,020,156

      General Discussion

      Sub-Forums

      1. Current News Events

      2. Photo Contest Archives

      Latest: Good stuff in "the rest of the world"

    2. Science Fiction and Fantasy

      Discussions:
      953
      Messages:
      16,885

      Science Fiction and Fantasy

      Sub-Forums

      1. Writing and World Building

      Latest: A completely alien sky

    3. Feedback and Announcements

      Discussions:
      4,067
      Messages:
      46,689

      Feedback and Announcements

      Sub-Forums

      1. 2015 PF Member Award Archive

      Latest: Incomplete math classification on this forum

    4. New Member Introductions

      Discussions:
      4,933
      Messages:
      13,376
      Latest: Hello All