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Physics Forums | Science Articles, Homework Help, Discussion

  1. Homework Help

    1. Introductory Physics Homework

      Finding Node Voltages

    2. Advanced Physics Homework

      Conductor sphere floating on a dielectric fluid

    3. Precalculus Mathematics Homework

      Formulas for Rotation and Translation

    4. Calculus and Beyond Homework

      Differential Equation with an Initial condition

    5. Biology, Chemistry and Earth Homework

      Help with physical geography

    6. Engineering and Computer Science Homework

      Flow rate of a liquid

  2. Science Education and Careers

    1. Science and Math Textbooks

      Book recommendations for second quantization and Jellium model

    2. Academic Guidance

      Ph.D. admissions criteria as predictors? (Science Advances)

    3. Educators and Teaching

      An Accurate Simple Harmonic Oscillator Laboratory - Comments

    4. Career Guidance

      Got my BS in Physics but I don't know what to apply for

  3. Physics

    1. General Physics

      A physics perspective needed on how the Mitochondria machine works

    2. Classical Physics

      why the entropy of the universe always increases?

    3. Quantum Physics

      Schrödinger's cat: what's the state?

    4. Special and General Relativity

      Schwarzschild metric not dependent on time

    5. Atomic and Condensed Matter

      How do electrons in materials interact?

    6. High Energy, Nuclear, Particle Physics

      Dissociative ionization Monte Carlo simulations

    7. Beyond the Standard Model

      Charge operator applied to matrix multiplets

  4. Astronomy and Cosmology

    1. Astronomy and Astrophysics

      Can event horizons cross for passing black holes at high speed

    2. Cosmology

      How can an expanding Universe look homogeneous?

  5. Mathematics

    1. General Math

      Is imaginary "i" a purely aesthetic matter?

    2. Calculus

      1 to the power of infinity, why is it indeterminate?

    3. Differential Equations

      Continuity of Green's function

    4. Topology and Analysis

      Finite distance between two points.

    5. Linear and Abstract Algebra

      What is Kronecker's theorem/lemma for root solutions?

    6. Differential Geometry

      Variational derivative and Euler-Poincare equations

    7. Set Theory, Logic, Probability, Statistics

      Is this formula for covariance wrong?

    8. MATLAB, Maple, Mathematica, LaTeX, Etc

      plot of ##\sin(x)/\log(x)##.

  6. Engineering

    1. General Engineering

      Exokat [catsuit exoskeleton] and Simbot 8.4 invention idea?

    2. Mechanical Engineering

      Need help to find shaft rpm

    3. Electrical Engineering

      Calculating the Power Dissipation of a Wire

    4. Materials and Chemical Engineering

      Mass Transfer

    5. Nuclear Engineering

      Help in cut geometry

    6. DIY Projects

      Crystal Radio question

  7. Other Sciences

    1. Chemistry

      Has anyone ever dealt with limescale in a bathroom sink?

    2. Programming and Computer Science

      Output of sympy.fourier_transform

    3. Biology and Medical

      Question regarding "Insect Apocalypse"

    4. Computing and Technology

      Problem logging onto sbcglobal.net email

    5. Earth

      Historic temperature data in New York/Greenwich on small and large time scales

  8. The Rest Frame Lounge

    1. General Discussion

      Favorite songs (new thread)

    2. Science Fiction and Fantasy Media

      Light sabers from the movies to the piste

    3. Feedback and Announcements

      Should we have an "open problems" section in this forum?

    4. New Member Introductions

      Hello from NJ, USA