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Re: Is gravity a single attractive force?

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On 2022-12-14 09:51:58 +0000, Athel Cornish-Bowden said:

[ … ]

> 
> There is a simple experiment that one can do that will indicate that 
> there is no repulsive force (though I don't suppose Ken "Idiot MM is a 
> valid TOE" Seto will be able to draw the obvious conclusion). Attach a 
> string of suitable length -- 5 m -- to an object like a coffee mug, and 
> swing it around your body. It will adopt a circular orbit and stay in 
> it as long as you continue to swing it. But where is the repulsive 
> force that stops it rushing in to hit you? There is none, and the 
> string is incapable of pushing.

Many years ago (1962, I think) I did this experiment with a glass 
chromatography tube, when I had a summer job in a laboratory belonging 
to a brewery. I don't think either I or the person who was put in 
charge of me (a German Jew who had spent the entire war living 
underground in Berlin; I wouldn't have guessed that was possible) with 
had much experience with column chromatography. Anyway, we thought the 
gel needed to be packed more tightly, and so we attached a string to 
the tube and swung it around. It could have been a lethal weapon in 
anyone had been around, but nobody was. If I had been Ken "Idiot MM is 
a valid TOE" Seto I might have been frightened that it would come 
towards me, but that didn't happen.


-- 
Athel -- French and British, living in Marseilles for 36+ years; mainly 
in England until 1987.

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Is gravity a single attractive force? Ken Seto <setoken47@gmail.com> - 2022-12-13 02:01 -0800
  Re: Is gravity a single attractive force? Athel Cornish-Bowden <acornish@imm.cnrs.fr> - 2022-12-13 11:24 +0100
  Re: Is gravity a single attractive force? "mitchr...@gmail.com" <mitchrae3323@gmail.com> - 2022-12-13 12:17 -0800
  Re: Is gravity a single attractive force? The Starmaker <starmaker@ix.netcom.com> - 2022-12-13 12:24 -0800
  Re: Is gravity a single attractive force? JanPB <filmart@gmail.com> - 2022-12-13 13:19 -0800
    Re: Is gravity a single attractive force? "mitchr...@gmail.com" <mitchrae3323@gmail.com> - 2022-12-13 13:31 -0800
      Re: Is gravity a single attractive force? "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2022-12-13 20:35 -0800
    Re: Is gravity a single attractive force? Athel Cornish-Bowden <acornish@imm.cnrs.fr> - 2022-12-14 10:51 +0100
      Re: Is gravity a single attractive force? Maciej Wozniak <maluwozniak@gmail.com> - 2022-12-14 04:12 -0800
      Re: Is gravity a single attractive force? Athel Cornish-Bowden <acornish@imm.cnrs.fr> - 2022-12-14 15:41 +0100
        Re: Is gravity a single attractive force? Maciej Wozniak <maluwozniak@gmail.com> - 2022-12-14 10:03 -0800
      Re: Is gravity a single attractive force? Aether Regaind <AetherRegaind@invalid.com> - 2022-12-14 20:47 +0000
        Re: Is gravity a single attractive force? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2022-12-20 23:37 +0100
          Re: Is gravity a single attractive force? Vincenzo Longo <olcv@ovgingln.og> - 2022-12-20 22:50 +0000
          Re: Is gravity a single attractive force? "mitchr...@gmail.com" <mitchrae3323@gmail.com> - 2022-12-21 11:13 -0800
            Re: Is gravity a single attractive force? Michelle Africano <nccr@amenica.he> - 2022-12-21 19:36 +0000
      Re: Is gravity a single attractive force? Ken Seto <setoken47@gmail.com> - 2022-12-15 11:53 -0800
        Re: Is gravity a single attractive force? Brent Làconi <oll@ntonoobe.bc> - 2022-12-15 20:36 +0000
  Re: Is gravity a single attractive force? Volney <volney@invalid.invalid> - 2022-12-13 23:31 -0500
    Re: Is gravity a single attractive force? Fabio Brambilla <oaab@llbaboaa.am> - 2022-12-14 18:08 +0000
      Re: Is gravity a single attractive force? whodat <whodaat@void.nowgre.com> - 2022-12-14 13:37 -0600
    Re: Is gravity a single attractive force? Ken Seto <setoken47@gmail.com> - 2022-12-15 12:07 -0800
      Re: Is gravity a single attractive force? Brent Làconi <oll@ntonoobe.bc> - 2022-12-15 20:31 +0000
      Re: Is gravity a single attractive force? Volney <volney@invalid.invalid> - 2022-12-16 02:09 -0500
        Re: Is gravity a single attractive force? Maciej Wozniak <maluwozniak@gmail.com> - 2022-12-16 04:13 -0800
        Re: Is gravity a single attractive force? Dario De filippis <ioss@delloidl.id> - 2022-12-16 18:51 +0000
          Re: Is gravity a single attractive force? "mitchr...@gmail.com" <mitchrae3323@gmail.com> - 2022-12-17 10:47 -0800
            Re: Is gravity a single attractive force? Dario De filippis <ioss@delloidl.id> - 2022-12-17 19:24 +0000
              Re: Is gravity a single attractive force? Jim Pennino <jimp@gonzo.specsol.net> - 2022-12-17 11:33 -0800
                Re: Is gravity a single attractive force? Dario De filippis <ioss@delloidl.id> - 2022-12-17 19:55 +0000
                Re: Is gravity a single attractive force? Jim Pennino <jimp@gonzo.specsol.net> - 2022-12-17 12:15 -0800
                Re: Is gravity a single attractive force? Dario De filippis <ioss@delloidl.id> - 2022-12-17 20:29 +0000
                Re: Is gravity a single attractive force? Jim Pennino <jimp@gonzo.specsol.net> - 2022-12-17 12:34 -0800
                Re: Is gravity a single attractive force? Dario De filippis <ioss@delloidl.id> - 2022-12-17 21:40 +0000
                Re: Is gravity a single attractive force? Jim Pennino <jimp@gonzo.specsol.net> - 2022-12-17 14:29 -0800
                Re: Is gravity a single attractive force? Dario De filippis <ioss@delloidl.id> - 2022-12-17 23:27 +0000
                Re: Is gravity a single attractive force? Dario De filippis <ioss@delloidl.id> - 2022-12-18 00:16 +0000
                Re: Is gravity a single attractive force? Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2022-12-20 11:10 -0800
                Re: Is gravity a single attractive force? RichD <r_delaney2001@yahoo.com> - 2022-12-20 12:11 -0800
        Re: Is gravity a single attractive force? Ken Seto <setoken47@gmail.com> - 2022-12-23 05:09 -0800
          Re: Is gravity a single attractive force? Athel Cornish-Bowden <acornish@imm.cnrs.fr> - 2022-12-23 14:26 +0100
      Re: Is gravity a single attractive force? Athel Cornish-Bowden <acornish@imm.cnrs.fr> - 2022-12-16 09:15 +0100
        Re: Is gravity a single attractive force? Athel Cornish-Bowden <acornish@imm.cnrs.fr> - 2022-12-16 10:24 +0100

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