Groups > sci.physics.relativity > #653525

Re: Scalar waves

From	Thomas Heger <ttt_heg@web.de>
Newsgroups	sci.physics.relativity
Subject	Re: Scalar waves
Date	2024-05-09 09:49 +0200
Message-ID	<la3dg7Fd677U3@mid.individual.net> (permalink)
References	(14 earlier) <l9u4dcFj3inU3@mid.individual.net> <1qt6ogf.1dzq6e9ud2kq8N%nospam@de-ster.demon.nl> <17cd431e1a5382d4$243803$255119$c2265aab@news.newsdemon.com> <la0iufFug9cU3@mid.individual.net> <1qt8mtf.1yziv71tsjk6sN%nospam@de-ster.demon.nl>

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Am Mittwoch000008, 08.05.2024 um 14:52 schrieb J. J. Lodder:

>>>>> You can use any other consistent system of units, if you don't like
>>>>> SI-units.
>>>>
>>>> Certainly, and you can use any other system of dimensions
>>>> than the one that is conventionally associated with the SI.
>>>>
>>>>> But actually I was talking about dimensions and how those are defined.
>>>>>
>>>>> That term refers to WHAT is measured, while units define the quantities
>>>>> of the measurement results.
>>>>
>>>> Sure, you can invent your own definitions,
>>>> but that is not how the term 'dimension' is used in physics.
>>>>
>>>>> Simple example:
>>>>>
>>>>> you have a distance of roughly 1 meter and want to measure that.
>>>>>
>>>>> you could use inch, yards, forlongs, lightseconds, Angstroem, mm and the
>>>>> size of the emperors feet.
>>>>>
>>>>> The choice of a unit would only influence the numerical value, but not
>>>>> the measured distance.
>>>>
>>>> You forget the only length unit that is still in everyday use,
>>>> the second, up to an unconvenient conversion factor.
>>>> Do I really need to remind you again that the meter has been abolished
>>>> as a primary standard, and that all length measurements
>>>> must (by the definition of the meter) be calibrated in seconds?
>>>
>>> Only such an idiot can believe such impudent lies, Lod.
>>>
>>
>> The dimensions 'time' and 'length' are different, hence you cannot
>> define units of length by units of time.
> 
> Again, your 'are' is wrong.
> What you should say is:
> 'my preferred dimensions of length and time are different'
> 
> Again again, a 'dimension' is NOT a property of a physical quantity,
> it is a property you assign to it, in any way you please.
> (as long as you are consistent about it)
> 

No!

See here:
https://www.me.psu.edu/cimbala/Learning/General/units.htm

Quote:

"There is a difference between dimensions and units. A dimension is a 
measure of a physical variable (without numerical values), while a unit 
is a way to assign a number or measurement to that dimension.

For example, length is a dimension, but it is measured in units of feet 
(ft) or meters (m). "


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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