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Re: Meditations about the force

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Luigi Fortunati wrote:

> Paul B. Andersen alle ore 14:00:31 del 19/08/2017 ha scritto:
>> Acceleration is what an accelerometer measures.
>> When you are stationary on the ground, the accelerometer
>> says you are accelerating vertically upwards at 9.8 m/s.
> 
> It is 9.8 m/s^2 and not 9.8 m/ s.

Correct, and I am pretty sure that Paul knows that.
 
>> In free fall, the accelerometer shows that your acceleration is zero.
>>
>> The only thing that can accelerate you, is a real force
>> that is acting on you. When you are sitting on a chair,
>> there is a real force pushing your butt. This force is
>> measurable, and you can feel it. You are accelerating
>> according to F = mg. F can easily be measured with a scale.
> 
> You said it well: this "strength" is measurable!
> 
> Your accelerometer is nothing more than a dynamometer that measures
> forces and not acceleration!
> 
> So much so that both me and the chair I sit on are firm and do not
> accelerate.

Wrong, as you can observe that when putting both the chair and yourself on a 
scale, the scale shows something greater than zero.  But only if the chair 
and you are not in free fall.  In free fall, you are also not making a dent 
in the chair.

So there is an “upwards” (away from the center of mass of Terra) directed 
force that prevents everything from continuing to fall freely, and the scale 
allows you to measure it.  That force – the electromagnetic force – results 
from the fact that the everything beneath the scale, the scale itself, the 
chair, and you, consist of crystals and atoms, and crystals and atoms 
consist of particles (called ions, protons, and electrons, in order of 
decreasing size) whose electric charge has the same sign, and that therefore 
repel one another [or, in the quantum-mechanical model, as electrons and 
protons are fermions (half spin), the Pauli exclusion principle disallows 
two or more of them from having the same quantum numbers, so there is a
so-called “Fermi pressure” against bringing them closer together].

But given what you have written, I do not expect you to accept that.  You 
have already proven yourself to have a closed mindset, to be one of those 
wannabes who can never accept as physical reality what they cannot 
*intuitively* understand.  As if human intuition would be a suitable measure 
of what is possible in the universe.

It would be better if you just stopped wasting our precious free time and 
silently go away.  There is enough of you people posing (sic) here already.

-- 
PointedEars

Twitter: @PointedEars2
Please do not cc me. / Bitte keine Kopien per E-Mail.

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Meditations about the force Luigi Fortunati <fortunati.luigi@gmail.com> - 2017-08-15 17:50 +0200
  Re: Meditations about the force Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-16 01:34 +0200
    Re: Meditations about the force mlwozniak@wp.pl - 2017-08-15 23:34 -0700
      Re: Meditations about the force Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-19 12:52 +0200
        Re: Meditations about the force Séverin Thibault <ruud@bwiu.ei> - 2017-08-19 11:04 +0000
        Re: Meditations about the force mlwozniak@wp.pl - 2017-08-19 10:43 -0700
    Re: Meditations about the force Luigi Fortunati <fortunati.luigi@gmail.com> - 2017-08-18 10:10 +0200
      Re: Meditations about the force mlwozniak@wp.pl - 2017-08-18 01:32 -0700
      Re: Meditations about the force Dirk Van de moortel <dirkvandemoortel@hotspam.not> - 2017-08-18 15:06 +0200
      Re: Meditations about the force Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-18 15:56 +0200
        Re: Meditations about the force mlwozniak@wp.pl - 2017-08-18 07:06 -0700
      Re: Meditations about the force "Paul B. Andersen" <relativity@paulba.no> - 2017-08-19 14:00 +0200
        Re: Meditations about the force Luigi Fortunati <fortunati.luigi@gmail.com> - 2017-08-19 17:45 +0200
          Re: Meditations about the force Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-19 21:28 +0200
        Re: Meditations about the force mlwozniak@wp.pl - 2017-08-19 10:44 -0700
        Re: Meditations about the force Thomas Heger <ttt_heg@web.de> - 2017-08-19 20:19 +0200
          Re: Meditations about the force Séverin Thibault <ruud@bwiu.ei> - 2017-08-19 19:56 +0000
            Re: Meditations about the force Séverin Thibault <ruud@bwiu.ei> - 2017-08-19 20:00 +0000

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