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Feb
10
comment Rotational speed of a planet
This clear question was closed. It exists a formula: rot = four terms, 1st degree on three parameters that gives the rotational period of all planets from Earth to Neptune with an error less than 0.18% . Let's say it is a coincidence.
Feb
6
answered Is the Boltzmann constant really that important?
Jan
14
awarded  Yearling
Dec
21
answered How many hours will there be in a day 5,000,000,000 years from now?
Dec
12
awarded  Nice Answer
Nov
16
revised How precisely does a star collapse into a black hole?
follow up
Oct
30
revised Why don't surfboards fly out the back of a utility truck when driving on the highway?
a figure at last
Oct
30
revised Why don't surfboards fly out the back of a utility truck when driving on the highway?
An image later
Oct
30
revised Why don't surfboards fly out the back of a utility truck when driving on the highway?
An image
Oct
30
answered Why don't surfboards fly out the back of a utility truck when driving on the highway?
Oct
27
comment Earth's Kinetic energy change
I can not reconcile your graph with the one of WP, which I'm sure is correct.
Oct
26
comment Earth's Kinetic energy change
LOD IERS data 1962 2015 gives the LOD graph of WP which is not like the one of the post. What is the link to the source of your data ?
Oct
22
comment Why do we hear a higher pitched sound outside the water when we smash two stones in water?
I made an experiment at home with rocks, an audio or fft analyzer on android from google play, and I can not say that your first sentence is correct. I know that the different recipients contributed with resonances, etc. I will try at the beach, eventually. Sorry no video.
Oct
21
comment Why do we hear a higher pitched sound outside the water when we smash two stones in water?
Can you provide any evidence to justify your first sentence (a video, WP, etc...)? (contrary to all others I do not have for granted your sentence as a truth, sorry)
Oct
16
comment Why do we hear a higher pitched sound outside the water when we smash two stones in water?
a link to a video to show the effect, pls?
Sep
30
revised Crown shape in water waves?
improve and to say to the downvoter buuuhh ,
Sep
29
comment Crown shape in water waves?
from the first link to the study from NAVAL RESEARCH LAB WASHINGTON: "The detailed hydrodynamics of the splash process is not well understood. In fact, the major reference for rain-like splashes remains the mostly descriptive work by Worthington cited aboc" The purpose of that doc is to study the "Electromagnetic scattering from a raindrop splash on a water surface is examined..." because of radar effects. So I do not understand why the doc is linked at all. Pls, read the abstract in the front page.
Sep
25
revised Is it possible that galaxies' redshift is caused by something else than the expansion of space?
On the evanescence of photons
Sep
25
comment Is it possible that galaxies' redshift is caused by something else than the expansion of space?
@WhatRoughBeast Your reaction was expected; I've added at the end: comment A: on Planck's law, to explain that the Planck's law is always fulfilled but the Planck's constant is dependent on the referential units.
Sep
25
revised Is it possible that galaxies' redshift is caused by something else than the expansion of space?
comment A: on Planck's law