1. Homework Help

   1. Introductory Physics Homework

      Gas mix of helium and nitrogen

   2. Advanced Physics Homework

      Electromagnetic Radiation of Single frequency Incident on a Slab

   3. Precalculus Mathematics Homework

      Are two coincident lines the same line?

   4. Calculus and Beyond Homework

      GR Cone Singularity

   5. Biology, Chemistry and Earth Homework

      Hydrodistillation and (original) uses

   6. Engineering and Computer Science Homework

      Derive lowest order (linear) approximation

2. Science Education and Careers

   1. Science and Math Textbooks

      Read Feynman Lectures?

   2. Academic Guidance

      How is medical physics compared to other fields of physics?

   3. Educators and Teaching

      Equations: whiteboard vs slides

   4. Career Guidance

      PhD rankings and employment

3. Physics

   1. General Physics

      Time travel and resonance

   2. Classical Physics

      Magnetic flux is the same if we apply Biot Savart?

   3. Quantum Physics

      Does measuring a atom collapse the wavefunction of its parts

   4. Special and General Relativity

      Transcending Absolutism and Relativism and Closing a Circle

   5. Atomic and Condensed Matter

      Are solar cells operated under any kind of bias or not?

   6. High Energy, Nuclear, Particle Physics

      Peskin Schroeder page 14

   7. Beyond the Standard Model

      Information encoding in the Holographic principle

4. Astronomy and Cosmology

   1. Astronomy and Astrophysics

      Can black dwarfs exist in the present Universe

   2. Cosmology

      How does one actually compute a correlation function?

5. Mathematics

   1. General Math

      Limit of an extension

   2. Calculus

      How to Convert Complex Logarithm to Complex Exponentional

   3. Differential Equations

      What does this line mean?

   4. Topology and Analysis

      Compact subspace in metric space

   5. Linear and Abstract Algebra

      Eigenproblem for non-normal matrix

   6. Differential Geometry

      What is the covariant derivative of the position vector?

   7. Set Theory, Logic, Probability, Statistics

      Propagation of Error when Taking the Average of Averages

   8. MATLAB, Maple, Mathematica, LaTeX, Etc

      Complex output from a real integral

6. Engineering

   1. General Engineering

      Wind Turbine Hydraulic to Electrical Conversion

   2. Mechanical Engineering

      Ultrasonic Welding

   3. Electrical Engineering

      One of my wheelchair motors overheats and stops working

   4. Materials and Chemical Engineering

      Material testing machine

   5. Nuclear Engineering

      I want to learn how to do burn up calculations for reactor

7. Other Sciences

   1. Chemistry

      How can I test the ph of foods

   2. Programming and Computer Science

      Neural Nets in AI

   3. Biology and Medical

      Endocrine glands and emotions

   4. Computing and Technology

      How to hook up my PC to my TV

   5. Earth

      About atmospheric remote sensors

8. PF Lounge

   1. General Discussion

      PF Photo Contest - Alphabets Association (4/21-4/27)

   2. Science Fiction and Fantasy Media

      Sci Fi immortal movies

   3. Feedback and Announcements

      Media Gallery coming soon

   4. New Member Introductions

      Transcending Relativism

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