Groups > sci.physics.relativity > #653363

Re: Scalar waves

From	Thomas Heger <ttt_heg@web.de>
Newsgroups	sci.physics.relativity
Subject	Re: Scalar waves
Date	2024-05-03 08:56 +0200
Message-ID	<l9jg4jF18vjU2@mid.individual.net> (permalink)
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Am Mittwoch000001, 01.05.2024 um 09:46 schrieb J. J. Lodder:
> Thomas Heger <ttt_heg@web.de> wrote:
> 
>> Am Montag000029, 29.04.2024 um 15:28 schrieb Ross Finlayson:
>>
>>>>
>>>
>>>
>>> It's rather as there's a physical constant.
>>>
>>> It's 1.0. In natural units, it's infinity.
>>>
>>> Or, there's a physical constant.
>>>
>>> It's infinity. In natural units, it's 1.0.
>>
>>
>> I don't like this 'c=1 thing', because 1 is a natural number, while
>> speed/velocity have physical dimensions with v = dx/dt.
>>
>> Because time and distance are not measured with the same units, c had to
>> have units.
> 
> You really need to work on your misunderstandings about units and
> dimensions.
> In particular, physical quantities do not -have- a dimension.
> Conversely dimension is not a property of physical quantity.
> You cannot measure a dimension.

Sure, you measure physical quantities.

Lets say: you measure a current in Amperes.

Then the measurement of - say- 100 mA means, that a certain electrical 
current has a current strength of 100 mA.

Now 'current strength' is the quantity which is measured. This current 
strength is then the dimension of the measurement and the value depends 
on the used units, which are Ampere in this case.

Now all measured quantities need some kind of dimension and unit, if 
they should make sense in physics.

Even pure numbers have a dimension this way.

E.g. if you count eggs, the result would be a number. But the number 
alone would not make sense, since 'number of eggs' can also be a dimension.

> Dimensions are human constructs that can be assigned arbitrarily,
> limited only by the need to be consistent about it.

'Human contruct' is ok, while to 'arbitrary' I would not agree.

E.g. if you measure a distance, than the measure has the dimension 
'length', even if you don't use the meter as unit, but angström, 
light-years or fourlongs instead.

...

TH

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Scalar waves Thomas Heger <ttt_heg@web.de> - 2024-04-28 07:46 +0200
  Re: Scalar waves Ross Finlayson <ross.a.finlayson@gmail.com> - 2024-04-28 09:19 -0700
    Re: Scalar waves Dominick Csikós <di@zsc.hu> - 2024-04-28 16:44 +0000
    Re: Scalar waves Ross Finlayson <ross.a.finlayson@gmail.com> - 2024-04-28 10:44 -0700
    Re: Scalar waves Thomas Heger <ttt_heg@web.de> - 2024-04-29 06:36 +0200
      Re: Scalar waves Ross Finlayson <ross.a.finlayson@gmail.com> - 2024-04-29 06:28 -0700
        Re: Scalar waves Thomas Heger <ttt_heg@web.de> - 2024-04-30 07:55 +0200
          Re: Scalar waves Thomas Heger <ttt_heg@web.de> - 2024-04-30 08:10 +0200
            Re: Scalar waves Ross Finlayson <ross.a.finlayson@gmail.com> - 2024-04-30 22:27 -0700
              Re: Scalar waves Thomas Heger <ttt_heg@web.de> - 2024-05-01 08:18 +0200
                Re: Scalar waves nospam@de-ster.demon.nl (J. J. Lodder) - 2024-05-01 09:46 +0200
                Re: Scalar waves Maciej Wozniak <mlwozniak@wp.pl> - 2024-05-01 11:23 +0200
                Re: Scalar waves Thomas Heger <ttt_heg@web.de> - 2024-05-03 08:46 +0200
              Re: Scalar waves nospam@de-ster.demon.nl (J. J. Lodder) - 2024-05-01 09:46 +0200
          Re: Scalar waves Maciej Wozniak <mlwozniak@wp.pl> - 2024-04-30 10:44 +0200
          Re: Scalar waves nospam@de-ster.demon.nl (J. J. Lodder) - 2024-05-01 09:46 +0200
            Re: Scalar waves Maciej Wozniak <mlwozniak@wp.pl> - 2024-05-01 11:21 +0200
            Re: Scalar waves Thomas Heger <ttt_heg@web.de> - 2024-05-03 08:56 +0200
              Re: Scalar waves Ross Finlayson <ross.a.finlayson@gmail.com> - 2024-05-04 08:38 -0700
                Re: Scalar waves Thomas Heger <ttt_heg@web.de> - 2024-05-05 08:00 +0200
                Re: Scalar waves Ross Finlayson <ross.a.finlayson@gmail.com> - 2024-05-05 06:56 -0700
                Re: Scalar waves Ross Finlayson <ross.a.finlayson@gmail.com> - 2024-05-05 07:49 -0700
                Re: Scalar waves nospam@de-ster.demon.nl (J. J. Lodder) - 2024-05-05 23:27 +0200
                Re: Scalar waves Thomas Heger <ttt_heg@web.de> - 2024-05-06 07:26 +0200
                Re: Scalar waves nospam@de-ster.demon.nl (J. J. Lodder) - 2024-05-06 11:36 +0200
                Re: Scalar waves Mikko <mikko.levanto@iki.fi> - 2024-05-06 13:48 +0300
                Re: Scalar waves nospam@de-ster.demon.nl (J. J. Lodder) - 2024-05-06 13:52 +0200
                Re: Scalar waves Thomas Heger <ttt_heg@web.de> - 2024-05-07 09:43 +0200
                Re: Scalar waves nospam@de-ster.demon.nl (J. J. Lodder) - 2024-05-07 18:42 +0200
                Re: Scalar waves Maciej Wozniak <mlwozniak@wp.pl> - 2024-05-07 18:53 +0200
                Re: Scalar waves Thomas Heger <ttt_heg@web.de> - 2024-05-08 08:04 +0200
                Re: Scalar waves nospam@de-ster.demon.nl (J. J. Lodder) - 2024-05-08 14:52 +0200
                Re: Scalar waves Maciej Wozniak <mlwozniak@wp.pl> - 2024-05-08 15:20 +0200
                Re: Scalar waves Thomas Heger <ttt_heg@web.de> - 2024-05-09 09:49 +0200
                Re: Scalar waves Mikko <mikko.levanto@iki.fi> - 2024-05-08 12:15 +0300
                Re: Scalar waves nospam@de-ster.demon.nl (J. J. Lodder) - 2024-05-08 14:52 +0200
                Re: Scalar waves Maciej Wozniak <mlwozniak@wp.pl> - 2024-05-08 15:18 +0200
                Re: Scalar waves Ross Finlayson <ross.a.finlayson@gmail.com> - 2024-05-08 13:13 -0700
                Re: Scalar waves Thomas Heger <ttt_heg@web.de> - 2024-05-09 09:55 +0200
                Re: Scalar waves Ross Finlayson <ross.a.finlayson@gmail.com> - 2024-05-09 13:02 -0700
                Re: Scalar waves Ross Finlayson <ross.a.finlayson@gmail.com> - 2024-05-09 13:18 -0700
                Re: Scalar waves Thomas Heger <ttt_heg@web.de> - 2024-05-10 18:46 +0200
                Re: Scalar waves Ross Finlayson <ross.a.finlayson@gmail.com> - 2024-05-10 13:04 -0700
                Re: Scalar waves nospam@de-ster.demon.nl (J. J. Lodder) - 2024-05-05 23:18 +0200
                Re: Scalar waves Ross Finlayson <ross.a.finlayson@gmail.com> - 2024-05-05 15:12 -0700
                Re: Scalar waves nospam@de-ster.demon.nl (J. J. Lodder) - 2024-05-06 11:36 +0200
                Re: Scalar waves Ross Finlayson <ross.a.finlayson@gmail.com> - 2024-05-06 12:39 -0700
              Re: Scalar waves nospam@de-ster.demon.nl (J. J. Lodder) - 2024-05-05 23:18 +0200
                Re: Scalar waves Thomas Heger <ttt_heg@web.de> - 2024-05-06 07:35 +0200
                Re: Scalar waves nospam@de-ster.demon.nl (J. J. Lodder) - 2024-05-06 11:36 +0200
                Re: Scalar waves Ollis Kalakos <asala@asakoias.gr> - 2024-05-06 17:28 +0000
                Re: Scalar waves Thomas Heger <ttt_heg@web.de> - 2024-05-07 09:50 +0200
                Re: Scalar waves Parkis Escarrà <acr@aaase.es> - 2024-05-07 09:48 +0000
                Re: Scalar waves Thomas Heger <ttt_heg@web.de> - 2024-05-08 08:09 +0200
                Re: Scalar waves Tamerlane Oldfart Lefévre <elell@trnvffmar.fr> - 2024-05-08 08:20 +0000
                Re: Scalar waves Thomas Heger <ttt_heg@web.de> - 2024-05-11 08:12 +0200
                Re: Scalar waves Ross Finlayson <ross.a.finlayson@gmail.com> - 2024-05-11 06:59 -0700
                Re: Scalar waves Ross Finlayson <ross.a.finlayson@gmail.com> - 2024-05-12 10:40 -0700

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