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...

Apr 11, 2014 · Listening to Feynman, He pointed out the fact that if a magnet is in an inertial frame with respect to a coil, there can be no electromotive force and hence no electricity produced. It is only …

Aug 16, 2016 · Is anti-gravity (i.e. repulsive gravity) possible in string theory? I have read some articles about scientists making assumptions about the existence of anti-gravity, but is it possible in string ...

Feb 15, 2021 · According to Noether's Theorem, every physical symmetry leads to a conservation law. For example, time-translation symmetry (the laws of physics don't change over time) implies …

Jan 16, 2021 · I often notice small patches of snow that remain on the ground in seemingly random locations, many days or even weeks after all other snow in an area has melted, and even when …

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?

Mar 29, 2024 · Suppose you reduced air pressure inside the room. Air inside the bottle would push down on the water, forcing it up the straw. When you suck on a straw, you use your mouth to reduce air …

Oct 5, 2023 · This might be a stupid question, but, why is it that gamma rays are able to penetrate almost any barrier without question? We know that gamma rays are simply high frequency waves …

Mar 7, 2017 · This was pointed out multiple times in comments by NowIGetToLearnWhatAHeadIs: What you are showing is an example of the Two Balloon Experiment. If you look at the Theoretical …

Nov 5, 2023 · Consider a magnetic system subject to a magnetic field. Here we work with the fields $H,M,B$. Now, how does a change in the Helmholz free energy depend on $H,M,B$? I ...