
Why is cold fusion considered bogus? - Physics Stack Exchange
Sep 22, 2011 · In the past, after Fleischmann and Pons announced their cold fusion results, in perfectly good faith, they were proven wrong by subsequent experiments. What are the experimental realities …
Why do whips hurt so much? - Physics Stack Exchange
Oct 16, 2018 · The reason, a Whip hurts so much is that the tip of whip moves extremely fast, causing the skin to tear. The reasoning behind this is easy to analyze from momentum conservation. Lets …
Why do I get negative entropy? - Physics Stack Exchange
Aug 29, 2025 · Yes, but I was trying to find the absolute entropy (like the one in the Boltzmann definition), not the Δ. So I thought to do this. Once we know that ΔS=Cln (T2/T1) we can split …
Is the E-cat by Andrea Rossi et al. for real?
Oct 11, 2014 · Rossi's device Unlike Pons/Fleischmann cells, or variants like Arata's or SPAWAR, Rossi is claiming fusion of ordinary hydrogen in Nickel. On the crazy-meter, Nickel-Hydrogen cold fusion is …
physical chemistry - Widom-Larsen Theory - Physics Stack Exchange
Oct 31, 2012 · The renaming is simply an attempt by Cold Fusion folks to politically distance themselves from Pons and Fleischmann, and people have a name for distancing the original discoverers--- it's …
wavefunction - Quantum interference - Physics Stack Exchange
Feb 22, 2026 · ψ (x) without the modulus bars denotes the complex amplitude which is the value (magnitude and phase) of the wavefunction (not the probability) for the component being considered …
Coin Rotation Paradox - Physics Stack Exchange
Feb 21, 2026 · I didn't get any physical intuition on the solution of this paradox it is called the "Coin Rotation Paradox" The process to set up this is take two coins and hold one of them fixed on a
quantum mechanics - Gravitational waves - Physics Stack Exchange
Feb 21, 2026 · For many years, I have been following with interest the results of experiments searching for Einstein's gravitational waves. As we know, the scientific community has a clear opinion on the …
Why does water reflect light? - Physics Stack Exchange
Oct 4, 2015 · Why does water reflect light? What is actually happening when light is reflected by water? We know why metals reflect light; water, however, is not metal, but it still reflects light and we can see...
Lorentz invariance of the 3 + 1 decomposition of spacetime
Mar 11, 2012 · Josep M Pons, "Generally covariant theories: the Noether obstruction for realizing certain space-time diffeomorphisms in phase space." Classical and Quantum Gravity 20 (2003) 3279-3294; …