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Re: The Elevator in Free Fall

By Jonathan Thornburg [remove -color t on Sat Dec 21 08:27:44 2024

Latest reply by Tom Roberts on Tue Dec 24 14:37:39 2024
Re: Newton's 3rd law is wrong

By Sylva Else on Mon Sep 16 01:44:42 2024

Latest reply by Tom Roberts on Tue Dec 24 14:36:49 2024
electric-car energy model

By Jonathan Thornburg [remove -color t on Sun Dec 22 08:57:10 2024

Latest reply by Jonathan Thornburg [remove -color t on Sun Dec 22 08:57:10 2024
Imaginary matrices

By D. Goncz on Sun Sep 22 13:22:33 2024

Latest reply by Tom Roberts on Wed Sep 25 22:46:39 2024
Von Neumann cycle stationary plant details

By Douglas Goncz A.A.S. M.E.T. 1990 on Sat Sep 7 08:42:18 2024

Latest reply by Jonathan Thornburg on Mon Sep 16 13:49:22 2024
=?UTF-8?Q?A_Web_app_showing_Einstein-Poincar=C3=A9_Synchronization_?=

By Python on Sun Sep 8 14:47:49 2024

Latest reply by Python on Sun Sep 8 14:47:49 2024
Bloch Spheres

By D. Goncz on Sat Aug 31 11:48:07 2024

Latest reply by D. Goncz on Sat Aug 31 11:48:07 2024
Re: Inertia and third principle

By Mikko on Sun Aug 4 07:53:54 2024

Latest reply by Mikko on Sat Aug 24 08:46:57 2024
The momentum - a cotangent vector?

By Stefan Ram on Wed Aug 7 06:54:34 2024

Latest reply by Stefan Ram on Sat Aug 10 06:16:00 2024
Matrix Multiplication in SR

By Stefan Ram on Tue Jul 30 23:44:26 2024

Latest reply by Stefan Ram on Thu Aug 1 07:01:38 2024
LISA: A space-based gravitational-wave detector

By Jonathan Thornburg [remove -color t on Fri Jul 12 14:42:34 2024

Latest reply by Jonathan Thornburg [remove -color t on Fri Jul 12 14:42:34 2024
Energy - the "hot potato"?

By Stefan Ram on Tue Jun 18 18:25:10 2024

Latest reply by Stefan Ram on Thu Jun 20 12:39:40 2024
Re: Equivalence principle

By Hendrik van Hees on Mon Jun 10 12:10:37 2024

Latest reply by Hendrik van Hees on Thu Jun 13 10:38:48 2024
Re: Experiments on the validity of Relativity

By Tom Roberts on Thu May 16 07:24:08 2024

Latest reply by Jonathan Thornburg [remove -color t on Wed Jun 5 07:10:25 2024
Falling into a black hole

By Stefan Ram on Sun May 26 16:46:52 2024

Latest reply by Stefan Ram on Sun May 26 16:46:52 2024
Theoretical Force carrying bosons

By Volney on Fri Apr 5 07:00:41 2024

Latest reply by Volney on Thu May 2 20:12:19 2024
The SR between reality and appearance

By Luigi Fortunati on Fri Sep 1 12:06:35 2023

Latest reply by wugi on Wed Apr 10 12:16:40 2024
Re: Free fall

By Mikko on Sun Jan 21 13:42:49 2024

Latest reply by bertietaylor on Fri Apr 5 04:23:52 2024
A little finite math... And an invitation!

By D. Goncz on Sat Mar 9 13:44:15 2024

Latest reply by D. Goncz on Sat Mar 9 13:44:15 2024
Classical Limits & Relativity

By Corey White on Thu Feb 22 09:45:12 2024

Latest reply by Corey White on Thu Feb 22 09:45:12 2024
Re: Gravitational force and gravitational acceleration

By Mikko on Mon Feb 19 00:32:13 2024

Latest reply by Mikko on Mon Feb 19 00:32:13 2024
Re: Display, avionic, conjugate

By D. Goncz on Tue Jan 30 01:09:41 2024

Latest reply by D. Goncz on Tue Jan 30 01:09:41 2024
Re: Inclined plane

By Mikko on Mon Jan 29 10:39:50 2024

Latest reply by Mikko on Mon Jan 29 10:39:50 2024
Are toroidal coordinates orthogonal and or separable?

By D. Goncz on Mon Jan 29 03:11:13 2024

Latest reply by D. Goncz on Mon Jan 29 03:11:13 2024
Fast pennies

By Stefan Ram on Mon Jan 15 13:10:10 2024

Latest reply by Stefan Ram on Sat Jan 27 16:08:15 2024
Transpoloidal field

By Douglas Goncz A.A.S. M.E.T. 1990 on Sat Jan 20 16:46:09 2024

Latest reply by Douglas Dana Edward^2 Parker-Goncz on Tue Jan 23 19:39:05 2024
The Direction of geodesics

By Luigi Fortunati on Wed Sep 7 06:22:42 2022

Latest reply by Jonathan Thornburg [remove -color t on Tue Jan 9 08:37:45 2024
Happy 100th birthday Yvonne Choquet-Bruhat!

By Andreas Moser on Fri Dec 29 10:41:32 2023

Latest reply by Andreas Moser on Fri Dec 29 10:41:32 2023
Re: Gravity and curvature

By Jonathan Thornburg [remove -color t on Thu Dec 21 08:19:38 2023

Latest reply by Jonathan Thornburg [remove -color t on Thu Dec 21 08:19:38 2023
Is inertia a vector?

By Luigi Fortunati on Mon Oct 23 11:31:23 2023

Latest reply by Hendrik van Hees on Mon Dec 11 13:33:03 2023
The second law

By Luigi Fortunati on Mon Nov 20 08:07:56 2023

Latest reply by Luigi Fortunati on Tue Nov 21 08:59:23 2023
Dis-relativity theory

By Julio Di Egidio on Sat Oct 14 15:16:09 2023

Latest reply by Edward Prochak on Thu Nov 2 08:17:19 2023
Moving a closed system with internal devices

By asjcharles@gmail.com on Fri Oct 13 18:48:05 2023

Latest reply by asjcharles@gmail.com on Mon Oct 16 20:34:12 2023
Inertia

By Luigi Fortunati on Mon Oct 16 20:13:00 2023

Latest reply by Luigi Fortunati on Mon Oct 16 19:50:58 2023
Twin watches

By Luigi Fortunati on Sat Sep 16 23:24:22 2023

Latest reply by Luigi Fortunati on Wed Oct 4 16:18:50 2023
QFT videos

By Stefan Ram on Sat Sep 23 14:08:36 2023

Latest reply by Richard Livingston on Mon Sep 25 15:42:00 2023
Novel Indexed Units

By D. Goncz on Fri Sep 22 02:22:57 2023

Latest reply by D. Goncz on Fri Sep 22 02:22:57 2023
The Twins and the Earth's Rotation

By Luigi Fortunati on Fri Jul 14 23:27:02 2023

Latest reply by Yanick Toutain on Thu Sep 21 13:01:11 2023
Gravitation and quanta by Jacques Solomon (1938)

By Yanick Toutain on Wed Sep 20 19:24:08 2023

Latest reply by Yanick Toutain on Wed Sep 20 19:24:08 2023
The Big Ben Paradox

By Pat Dolan on Sat Sep 2 08:32:05 2023

Latest reply by William on Tue Sep 5 11:02:33 2023
Synchronization

By Luigi Fortunati on Sat Aug 12 07:58:03 2023

Latest reply by wugi on Fri Sep 1 07:34:46 2023
JWST's surprising galaxies and Big G

By stargene on Sun Aug 20 21:38:36 2023

Latest reply by Richard Livingston on Mon Aug 21 13:43:32 2023
Waves moving in a lecture

By Stefan Ram on Wed Aug 2 10:11:06 2023

Latest reply by Richard Livingston on Thu Aug 10 12:33:19 2023
SRT interactive

By wugi on Thu Jul 20 11:45:20 2023

Latest reply by wugi on Thu Jul 20 11:45:20 2023
Symmetries

By Stefan Ram on Sat Jun 24 13:37:05 2023

Latest reply by Stefan Ram on Tue Jul 11 10:56:07 2023
Length contraction

By Luigi Fortunati on Sun May 21 10:16:01 2023

Latest reply by Luigi Fortunati on Tue Jun 27 12:20:24 2023
Is CPT symmetry still valid for macroscopic physics? (proposed test wit

By Jarek Duda on Sat Jun 17 08:45:56 2023

Latest reply by Jarek Duda on Sat Jun 17 08:45:56 2023
Gravity

By Corey White on Thu Jun 1 07:14:35 2023

Latest reply by Richard Livingston on Thu Jun 1 14:23:51 2023
Superelliptical Architectural Foundation

By Douglas Goncz A.A.S. M.E.T. 1990 on Mon May 22 10:15:40 2023

Latest reply by Douglas Goncz A.A.S. M.E.T. 1990 on Mon May 22 10:15:40 2023
Planetary Aberration

By Richard Livingston on Tue May 16 07:24:00 2023

Latest reply by Steven Carlip on Fri May 19 08:04:11 2023
Is the free-falling elevator an inertial reference?

By Luigi Fortunati on Sun Apr 30 07:50:04 2023

Latest reply by Luigi Fortunati on Fri May 5 00:49:54 2023
Faraday's Law and the Maxwell Equations

By Douglas Goncz A.A.S. M.E.T. 1990 on Wed Mar 22 00:07:03 2023

Latest reply by Rock Brentwood on Sun Apr 30 12:47:53 2023
Parallel Fourier Gradient

By Douglas Goncz A.A.S. M.E.T. 1990 on Sat Apr 15 23:35:36 2023

Latest reply by Rock Brentwood on Sun Apr 30 12:46:47 2023
The elevator in zero gravity

By Luigi Fortunati on Tue Apr 18 23:49:41 2023

Latest reply by Luigi Fortunati on Sun Apr 23 07:59:11 2023
The internal force

By Luigi Fortunati on Thu Mar 30 20:59:01 2023

Latest reply by Luigi Fortunati on Thu Apr 6 14:02:42 2023
Homopolar Motor 2

By Douglas Goncz A.A.S. M.E.T. 1990 on Thu Mar 23 23:59:01 2023

Latest reply by Douglas Eagleson on Fri Mar 24 23:52:07 2023
The force of gravity

By Luigi Fortunati on Sun Nov 27 10:41:33 2022

Latest reply by Richard Livingston on Wed Mar 22 11:48:57 2023
Existence of "apparent" force

By Luigi Fortunati on Sun Mar 5 22:02:45 2023

Latest reply by Tom Roberts on Fri Mar 17 16:17:53 2023
The direction of the precession

By Luigi Fortunati on Mon Jan 16 10:03:53 2023

Latest reply by Sylvia Else on Sun Mar 12 13:54:50 2023
Rotation measurement

By Luigi Fortunati on Sat Mar 11 08:59:22 2023

Latest reply by Luigi Fortunati on Sat Mar 11 08:59:22 2023
Two questions about force

By Luigi Fortunati on Sat Feb 18 00:37:48 2023

Latest reply by Stefan Ram on Tue Mar 7 15:16:50 2023
Pseudopotential k vector selection for semiconductor energy band calcul

By amal banerjee on Mon Feb 20 07:57:56 2023

Latest reply by amal banerjee on Mon Feb 20 07:57:56 2023
How do things get into black holes?

By John L. on Sun Feb 12 14:06:26 2023

Latest reply by George Hrabovsky on Sat Feb 18 00:49:14 2023
Pure Homopolar Motor

By Douglas Goncz A.A.S. M.E.T. 1990 on Sat Feb 18 00:27:49 2023

Latest reply by Douglas Goncz A.A.S. M.E.T. 1990 on Sat Feb 18 00:27:49 2023
Chat GPT =&D Example Verbatim

By Douglas Goncz A.A.S. M.E.T. 1990 on Wed Feb 1 00:53:36 2023

Latest reply by Sylvia Else on Thu Feb 16 22:30:10 2023
Symmetry breaking example

By Jordan Lundberg on Thu Feb 16 22:14:08 2023

Latest reply by Jordan Lundberg on Thu Feb 16 22:14:08 2023
Symmetric Cylindrical Coordinates

By Douglas Goncz A.A.S. M.E.T. 1990 on Sun Feb 12 13:02:01 2023

Latest reply by Douglas Goncz A.A.S. M.E.T. 1990 on Sun Feb 12 13:02:01 2023
Bra vectors in Ballentine

By Stefan Ram on Mon Jan 30 08:46:41 2023

Latest reply by Stefan Ram on Mon Jan 30 08:46:41 2023
Relativity of simultaneity

By Luigi Fortunati on Thu Jul 28 11:45:03 2022

Latest reply by Rock Brentwood on Sat Jan 28 22:39:18 2023
A non-perturbative perturbation theory?

By Rock Brentwood on Sat Jan 28 22:38:56 2023

Latest reply by Rock Brentwood on Sat Jan 28 22:38:56 2023
Apparent rotation

By Luigi Fortunati on Thu Dec 29 07:29:13 2022

Latest reply by Luigi Fortunati on Sat Jan 14 00:15:52 2023
Oxygen double helix images, in theory

By Alan Folmsbee on Tue Jan 10 08:48:01 2023

Latest reply by Phillip Helbig (undress to reply on Wed Jan 11 10:58:34 2023
Centrifugal force (simulation)

By Luigi Fortunati on Wed Dec 14 20:52:59 2022

Latest reply by Hendrik van Hees on Sun Dec 25 10:00:02 2022
Cheating your way out of the Second Law and into Perpetuum Mobile.

By Rock Brentwood on Tue Dec 20 12:54:52 2022

Latest reply by Thomas Koenig on Thu Dec 22 10:29:02 2022
Negligible Warming--NOT!

By Douglas Goncz A.A.S. M.E.T. 1990 on Fri Nov 11 22:35:47 2022

Latest reply by Douglas Goncz A.A.S. M.E.T. 1990 on Sun Dec 11 11:43:30 2022
"Three billiard balls collide simultaneously" revisited after 20 years

By Carl K on Tue Nov 29 13:59:16 2022

Latest reply by Carl K on Thu Dec 8 23:24:58 2022
F=ma

By Luigi Fortunati on Sat Nov 19 21:36:21 2022

Latest reply by Luigi Fortunati on Sat Nov 26 13:05:52 2022
Suprathermal?

By D. Goncz on Sat Nov 26 13:05:43 2022

Latest reply by D. Goncz on Sat Nov 26 13:05:43 2022
Life at equilibrium

By mark horn on Mon Nov 21 15:41:58 2022

Latest reply by mark horn on Wed Nov 23 12:39:17 2022
Neptune

By Luigi Fortunati on Sat Nov 12 13:48:52 2022

Latest reply by Tom Roberts on Fri Nov 18 18:14:08 2022
Tidal forces

By Luigi Fortunati on Thu Nov 17 10:01:53 2022

Latest reply by Sylvia Else on Fri Nov 18 08:28:19 2022
Newton's bucket

By Luigi Fortunati on Wed Jul 13 09:50:37 2022

Latest reply by xray4abc on Wed Nov 16 08:27:28 2022
Spring in free fall

By Luigi Fortunati on Fri Nov 4 12:25:07 2022

Latest reply by Phillip Helbig (undress to reply on Tue Nov 15 12:17:21 2022
Two trolleys on the rail

By Luigi Fortunati on Sun Nov 6 20:07:08 2022

Latest reply by Luigi Fortunati on Sun Nov 13 10:10:34 2022
Higgs Field Inside a Black Hole

By jtmpreno on Fri Nov 11 21:57:38 2022

Latest reply by Sylvia Else on Sat Nov 12 13:20:29 2022
The center of gravity

By Luigi Fortunati on Sat Oct 29 13:17:53 2022

Latest reply by Edward Prochak on Tue Nov 8 22:33:08 2022
Nobel price physics 2022.

By Nicolaas Vroom on Mon Oct 10 10:20:38 2022

Latest reply by Nicolaas Vroom on Tue Nov 8 08:35:15 2022
Second Law of Thermodynamics versus Maxwell's demon.

By Nicolaas Vroom on Sun Oct 30 18:02:06 2022

Latest reply by Nicolaas Vroom on Wed Nov 2 07:08:15 2022
Is this paper correct?

By aristo dorticos on Sat Oct 29 13:53:59 2022

Latest reply by aristo dorticos on Tue Nov 1 00:44:27 2022
relativistic gamma factor maximum

By mark horn on Mon Jun 21 01:01:04 2021

Latest reply by Nicolaas Vroom on Mon Oct 31 18:02:46 2022
The second principle and inertia

By Luigi Fortunati on Sat Oct 8 10:50:28 2022

Latest reply by Luigi Fortunati on Mon Oct 17 09:40:53 2022
Conservation of Information in QM

By Richard Livingston on Thu Sep 1 17:30:55 2022

Latest reply by Richard Livingston on Fri Oct 7 17:08:41 2022
Hossenfelder on particle physics

By Thomas Koenig on Fri Sep 30 18:02:17 2022

Latest reply by Richard Livingston on Fri Oct 7 17:00:48 2022
Two bodies in remote space

By Luigi Fortunati on Fri Sep 23 09:01:54 2022

Latest reply by Richard Livingston on Mon Oct 3 21:20:04 2022
Angle bisection

By Stefan Ram on Sat Sep 24 13:11:14 2022

Latest reply by Julio Di Egidio on Sun Sep 25 11:30:43 2022
Photons and the cosmic redshift

By Bruchpilot Aki on Wed Sep 14 06:19:53 2022

Latest reply by Tom Roberts on Mon Sep 19 22:26:12 2022
Action and reaction

By Luigi Fortunati on Tue Aug 23 23:23:10 2022

Latest reply by Luigi Fortunati on Tue Sep 6 11:24:18 2022
AN_ADVANDED_MATHEMATICAL_SOLVER_APPLICATION__B0ON_FOR_SCIENCE

By berk berk on Sun Sep 4 22:06:56 2022

Latest reply by berk berk on Sun Sep 4 22:06:56 2022
sci.physics.research@googlegroups.com

By EL EL on Fri Sep 2 23:34:18 2022

Latest reply by EL EL on Fri Sep 2 23:34:18 2022
=?UTF-8?Q?Q_on_Mach=E2=80=94Einstein_Principle_w=2F_Geometric_Algebra?=

By Julio Di Egidio on Tue Aug 30 23:33:06 2022

Latest reply by Julio Di Egidio on Tue Aug 30 23:33:06 2022
Inertial mass and gravitational mass

By Luigi Fortunati on Wed Aug 17 15:09:48 2022

Latest reply by Luigi Fortunati on Fri Aug 19 00:16:13 2022
The clock in the waggon

By Luigi Fortunati on Wed Aug 10 08:30:05 2022

Latest reply by Luigi Fortunati on Sat Aug 13 10:34:46 2022
Does the blue force disappear?

By Luigi Fortunati on Sat Aug 6 08:57:37 2022

Latest reply by Luigi Fortunati on Mon Aug 8 08:25:11 2022
pressure variations

By Uno Qualunque on Wed Aug 3 06:29:30 2022

Latest reply by Richard Livingston on Wed Aug 3 17:26:45 2022
Re: Is there a universal time?

By Richard D. Saam on Tue Jul 19 23:39:17 2022

Latest reply by Phillip Helbig (undress to reply on Thu Jul 28 13:38:43 2022
Centripetal and centrifugal force

By Luigi Fortunati on Sun Jul 3 23:05:54 2022

Latest reply by J. J. Lodder on Thu Jul 14 12:12:14 2022
The braking of the traveler twin

By Luigi Fortunati on Mon Mar 14 12:08:08 2022

Latest reply by Mike Fontenot on Mon Jul 11 19:40:42 2022
quantum teleportation and time reversal

By Chris Jacobs on Sun Jun 12 20:28:50 2022

Latest reply by Nicolaas Vroom on Fri Jun 24 11:07:03 2022
Time in accelerated reference frames

By Luigi Fortunati on Tue May 31 07:54:31 2022

Latest reply by J. J. Lodder on Wed Jun 8 21:51:11 2022
Can acceleration be measured with a watch?

By Luigi Fortunati on Mon May 23 09:46:19 2022

Latest reply by J. J. Lodder on Wed Jun 8 21:50:41 2022
Question on Energy of emr from a range of frequencies

By Lou on Mon May 30 10:06:42 2022

Latest reply by Richard Livingston on Mon May 30 11:41:10 2022
Charged black hole

By John L. on Sun May 29 17:38:16 2022

Latest reply by John L. on Sun May 29 17:38:16 2022
Gravity acts on two masses

By Luigi Fortunati on Mon May 23 09:45:49 2022

Latest reply by Luigi Fortunati on Mon May 23 09:45:49 2022
Inertial frame

By Luigi Fortunati on Sat May 7 10:38:37 2022

Latest reply by Tom Roberts on Fri May 20 15:15:32 2022
problems with arXiv

By Phillip Helbig (undress to reply on Wed Feb 9 12:44:25 2022

Latest reply by Rock Brentwood on Mon May 16 23:46:01 2022
The disappearing force

By Luigi Fortunati on Sat May 14 11:05:28 2022

Latest reply by Luigi Fortunati on Mon May 16 15:47:08 2022
Superconductor Theory

By Richard D. Saam on Thu May 5 21:05:51 2022

Latest reply by Richard D. Saam on Sun May 15 11:11:12 2022
Speed of the Sun

By Luigi Fortunati on Sun May 8 17:57:11 2022

Latest reply by Luigi Fortunati on Sun May 8 17:57:11 2022
Looking for books on heterogeneous junction transistors(HBT, HEMT etc.,

By amal banerjee on Sat May 7 09:18:19 2022

Latest reply by amal banerjee on Sat May 7 09:18:19 2022
Einstein's elevator

By Luigi Fortunati on Tue Apr 19 07:21:40 2022

Latest reply by Luigi Fortunati on Fri May 6 17:22:08 2022
Cosmic event horizon entropy to the entropy inside it.

By mike jurney on Tue Apr 26 20:22:21 2022

Latest reply by mike jurney on Tue Apr 26 20:22:21 2022
What is a force?

By Stefan Ram on Mon Apr 25 00:49:45 2022

Latest reply by J. J. Lodder on Mon Apr 25 12:10:44 2022
Neutrinos and "ultra-worldly particles"

By Luigi Fortunati on Wed Apr 6 11:21:20 2022

Latest reply by Douglas Eagleson on Mon Apr 18 13:54:17 2022
Gravity and free fall

By Luigi Fortunati on Fri Mar 4 08:16:58 2022

Latest reply by Luigi Fortunati on Mon Mar 21 08:04:51 2022
Physics bitten by reverse Alan Sokal hoax? ... revisited

By Rock Brentwood on Tue Jan 4 13:37:09 2022

Latest reply by Phillip Helbig (undress to reply on Sat Jan 8 00:29:02 2022
Enumerating the Unit Volumes and Their Surfaces in the Confocal Ellipso

By Douglas Dana Edward^2 Parker-Goncz on Sun Jun 6 14:22:04 2021

Latest reply by Douglas Dana Edward^2 Parker-Goncz on Sun Nov 28 12:20:26 2021
String Theory's dictionary and the Shannon Index

By stargene on Thu Nov 11 10:02:43 2021

Latest reply by stargene on Thu Nov 11 10:02:43 2021
Re: Relativistic vs. Euclidean geometry

By Tom Capizzi on Mon Nov 8 10:33:24 2021

Latest reply by Tom Capizzi on Mon Nov 8 10:33:24 2021
Tutorial #1, why you can't measure 'changes in the speed of light'

By J. J. Lodder on Wed Sep 1 20:27:07 2021

Latest reply by J. J. Lodder on Mon Oct 25 15:49:22 2021
"Classical transport"

By Jos Bergervoet on Fri Oct 1 14:48:53 2021

Latest reply by Jos Bergervoet on Wed Oct 6 20:23:42 2021
Breaking the light speed barrier (ArXiv preprint)

By Zurab Silagadze on Mon Jul 26 06:59:40 2021

Latest reply by Gary Harnagel on Mon Oct 4 07:16:18 2021
Lloyd & Ng on limits of physical measure of a region

By stargene on Thu Sep 9 11:36:15 2021

Latest reply by stargene on Mon Sep 20 07:32:53 2021
The Fallacy Of Chaos

By Nicolaas Vroom on Wed Sep 15 07:22:02 2021

Latest reply by Nicolaas Vroom on Wed Sep 15 07:22:02 2021
Chemistry Research Question: Comparing blanks and samples with same pH?

By M P on Sat Aug 7 01:04:16 2021

Latest reply by M P on Sat Aug 7 01:04:16 2021
Penrose and the singularity

By Jos Bergervoet on Thu Jul 29 09:54:55 2021

Latest reply by Jos Bergervoet on Thu Jul 29 09:54:55 2021
QFT making leaky BH horizons?

By stargene on Wed Jun 2 08:18:08 2021

Latest reply by Gary Harnagel on Sat Jul 24 09:23:52 2021
About the partial differential symbol used by F. Duncan M. Haldane.

By Hongyi Zhao on Mon Jul 12 18:06:05 2021

Latest reply by Hongyi Zhao on Wed Jul 14 23:14:42 2021
=?UTF-8?B?SXMgZWxlY3Ryb24ncyDigJxzcGlu4oCdIHJlYWw/?=

By israel socratus on Tue Jun 29 12:34:24 2021

Latest reply by asjcharles@gmail.com on Tue Jul 6 07:34:09 2021
Does The Singularity Exist?

By israel socratus on Sat Jun 19 09:00:01 2021

Latest reply by Nicolaas Vroom on Mon Jun 21 14:32:02 2021
Why is push gravity concept considered not viable by mainstream sci

By LouDeeCruz on Fri Feb 5 13:55:26 2021

Latest reply by Ray Tomes on Fri Jun 11 07:13:07 2021
feedback on research article

By Santosh Gupta on Sat May 29 07:41:31 2021

Latest reply by Santosh Gupta on Sat May 29 07:41:31 2021
Electromagnetic force and gravity force

By Luigi Fortunati on Tue May 18 14:06:37 2021

Latest reply by Tom Roberts on Mon May 24 20:02:18 2021
natbib, \citet, numerical references: spphys.bst

By Phillip Helbig (undress to reply on Sun May 16 14:10:17 2021

Latest reply by Phillip Helbig (undress to reply on Sun May 16 14:10:17 2021
Difference between F=ma and F=m1*m2/d^2

By Luigi Fortunati on Sat Apr 10 09:40:11 2021

Latest reply by p.kinsler@ic.ac.uk on Thu Apr 29 07:54:33 2021
Magnetic energy storing - SMES

By Angelo on Mon Apr 19 11:20:28 2021

Latest reply by Angelo on Mon Apr 19 11:20:28 2021
confirmation of undisputed results

By Phillip Helbig (undress to reply on Mon Jan 4 09:49:07 2021

Latest reply by Jos Bergervoet on Sat Feb 27 11:11:43 2021
Neutrino Energy?

By Gary Harnagel on Fri Dec 25 13:41:14 2020

Latest reply by Jos Bergervoet on Sun Dec 27 11:12:54 2020
Physics Today provides free access to 72-year archive

By Phillip Helbig (undress to reply) on Fri Dec 18 13:16:03 2020

Latest reply by Alex on Sat Dec 26 19:43:30 2020
Does the bridge collapse under the weight of the train?

By Luigi Fortunati on Fri Nov 13 20:02:51 2020

Latest reply by Douglas Eagleson on Wed Dec 16 14:53:36 2020
Published: QCD Theory of the Hadrons and Filling the Yang-Mills Mass Ga

By Jay R. Yablon on Wed Dec 16 14:40:00 2020

Latest reply by Jay R. Yablon on Wed Dec 16 14:40:00 2020
Navier-Stokes questions..

By Jos Bergervoet on Sun Nov 8 16:18:02 2020

Latest reply by Jos Bergervoet on Sat Nov 28 11:35:03 2020
The three classical tests of General Relativity.

By Ned Latham on Tue Apr 14 07:17:49 2020

Latest reply by Jonathan Thornburg [remove -animal on Thu Nov 26 13:46:49 2020
What is the group of maximally entangled states?

By Jos Bergervoet on Thu Nov 26 13:45:58 2020

Latest reply by Jos Bergervoet on Thu Nov 26 13:45:58 2020
Calculating the gravity field of a quantum state.

By rockbrentwood@gmail.com on Thu Oct 22 07:10:32 2020

Latest reply by Sylvia Else on Fri Nov 13 19:45:22 2020
Time-rate change in relatively moving frames

By PengKuan Em on Sat Sep 5 08:36:22 2020

Latest reply by Tom Roberts on Mon Oct 26 10:23:43 2020
What do ultrarelativistic particles add to the BH mass at its event hor

By stargene on Sat Oct 10 10:47:53 2020

Latest reply by stargene on Sat Oct 10 10:47:53 2020
Cosmological Principle-Homogenous and Isotropic

By Savin Beniwal on Sat Oct 10 10:14:42 2020

Latest reply by Savin Beniwal on Sat Oct 10 10:14:42 2020
8 pi G over c^3 or c^4 or what?

By rockbrentwood@gmail.com on Wed Aug 12 08:50:47 2020

Latest reply by lydiamariewilliamson@gmail.com on Thu Aug 20 20:26:49 2020
Acceleration compared to which reference system?

By Luigi Fortunati on Mon Jul 27 15:26:06 2020

Latest reply by Rock Brentwood on Fri Aug 14 05:56:51 2020
Two real fields with bi-quadratic coupling

By Jos Bergervoet on Fri Jun 19 08:15:29 2020

Latest reply by Jos Bergervoet on Tue Jul 14 08:03:05 2020
SR versus Electrodynamics

By Nicolaas Vroom on Fri May 15 14:06:42 2020

Latest reply by rockbrentwood@gmail.com on Thu Jun 18 05:55:54 2020
The Wolfram Physics Project

By Thomas Koenig on Thu Apr 16 08:54:52 2020

Latest reply by rockbrentwood@gmail.com on Wed Jun 17 21:49:21 2020
SL(5) gravity & gravity with a non-symmetric metric.

By rockbrentwood@gmail.com on Mon Jun 15 20:07:36 2020

Latest reply by rockbrentwood@gmail.com on Mon Jun 15 20:07:36 2020
Is Maxwell-Lorentz theory (and Yang-Mills theory) justified by the in

By rockbrentwood@gmail.com on Thu Jun 11 08:39:39 2020

Latest reply by rockbrentwood@gmail.com on Thu Jun 11 08:39:39 2020
The twins paradox

By Luigi Fortunati on Thu May 21 07:36:20 2020

Latest reply by Douglas Eagleson on Tue Jun 2 23:17:53 2020
upright Greek letters for constants as opposed to variables

By Hendrik van Hees on Sun Apr 26 09:39:55 2020

Latest reply by Phillip Helbig (undress to reply on Sun May 3 07:04:03 2020
Unbound states of the hydrogen atom

By Michael Cole on Sun Apr 26 09:25:29 2020

Latest reply by Hendrik van Hees on Sun Apr 26 15:06:28 2020
Electric and magnetic fields.

By Ned Latham on Sat Apr 25 20:43:14 2020

Latest reply by richalivingston@gmail.com on Sun Apr 26 15:06:14 2020
Einstein notation

By Douglas Dana Edward^2 Parker-Goncz on Mon Mar 30 22:39:21 2020

Latest reply by Jos Bergervoet on Sat Apr 25 20:43:44 2020
The Prismatic Effect

By Ned Latham on Wed Apr 15 08:49:59 2020

Latest reply by Ned Latham on Sat Apr 25 12:50:40 2020
Gravity and non reversibility of time

By Ray Tomes on Sat Apr 4 20:42:45 2020

Latest reply by Ray Tomes on Sat Apr 4 20:42:45 2020
Neutrino speed and mass

By Phillip Helbig (undress to reply) on Thu Mar 26 11:53:29 2020

Latest reply by Michael Moroney on Sat Apr 4 17:42:34 2020
Doppler shift and refraction

By Ned Latham on Mon Mar 30 22:23:55 2020

Latest reply by Ned Latham on Mon Mar 30 22:23:55 2020
Measurement of electron spin direction, assuming hidden variables

By richalivingston@gmail.com on Thu Mar 26 23:23:40 2020

Latest reply by ben6993@hotmail.com on Sun Mar 29 14:42:34 2020
non spinning black holes

By raymond.yohros@gmail.com on Wed Mar 25 22:45:35 2020

Latest reply by Phillip Helbig (undress to reply) on Thu Mar 26 11:53:51 2020