About 50 results
Open links in new tab
  1. Electro-gravitation - is it real? - Physics Stack Exchange

    I came across an article claiming that if you charge two plates, one positive and one negative, and fasten them together (assuming they are insulated from each other), they will float in the air. I...

  2. Does the unit "volt-seconds" have any interesting interpretation?

    Nov 28, 2023 · "But what are volt-seconds? Is there any way to interpret them without talking about inductance?" - Have you considered what the answer might be if magnetic charge exists?

  3. How does Boundary layer separation happen on a flat plate?

    Jan 20, 2026 · Boundary layer separation happens on a flat plate only when the plate is at some angle to the oncoming flow Not exactly true, on finite plates turbulent regions and separation will happen on …

  4. string theory - Concerning Electrogravitics in an inertial frame ...

    Apr 11, 2014 · Concerning Electrogravitics in an inertial frame Ask Question Asked 11 years, 11 months ago Modified 11 years, 11 months ago

  5. Why does Earth have the largest mean density of all the planets in the ...

    Aug 31, 2025 · One thing no other answers have brought up yet is that as the most massive rocky planet, Earth has a density advantage over the other rocky planets because of the high pressure in …

  6. Newest 'quantum-electrodynamics' Questions - Page 44

    Jul 30, 2023 · Quantum electrodynamics (QED) is the quantum field theory believed to describe electromagnetic interaction. It is the simplest example of a quantum gauge theory, where the gauge …

  7. Salt water and ice, vs. plain water and ice - Physics Stack Exchange

    Feb 10, 2020 · A famous puzzle is whether an ice cube melts to nothing more quickly in salt water or fresh water. The answer is fresh water, because the water melting off the ice cube sinks in the plain …

  8. newtonian mechanics - Why does height affect bounce efficiency ...

    Oct 25, 2018 · The ball dropped for a low height like 20 cm will give a lower rebound height than the higher drop heights until it reaches its terminal velocity when it is the fastest downward force it will …

  9. Does centrifugal force exist? - Physics Stack Exchange

    Apr 23, 2014 · Currently in my last year of high school, and I have always been told that centrifugal force does not exist by my physics teachers. Today my girlfriend in the year below asked me what …

  10. string theory - Is anti-gravity (i.e. repulsive gravity) possible in ...

    Aug 16, 2016 · As it happens we do observe anti-gravity (i.e. repulsive gravity) in the form of the dark energy. There are speculative ideas to describe this from string theory, though these are far from …