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From: Thomas Heger <ttt_heg@web.de>
Newsgroups: sci.physics.relativity
Subject: Re: Annotated version of SRT
Date: Wed, 06 Apr 2022 07:40:01 +0200
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Am 05.04.2022 um 08:46 schrieb Michael Moroney:
> On 4/5/2022 2:25 AM, Thomas Heger wrote:
>
>> Now the same units 'dyne' are not appropriate for electrical fields of
>> different kind, because the dyne is 'not electric'.
>>
>> The units simply ignore this different origins of the fields and their
>> different nature.
>
> The units of the fields are not force but force per unit charge.

Sure, because the number of units mean dimensionless numbers and 
'inherit' the units from the corresponding coordinate system.

That system is now 'normed' to provide the appropriate units and located 
somewhere.

Now we attatch a coordinate system to an electron and norm it with V/m, 
while the electrons position vector is normed with length units in 
reference to a certain coordinate system which provides positions.

Position vectors have the form (x,y,z) and electric field-strength 
vectors the form (X,Y,Z) and magnetic field-strength vectors the form 
(L, M, N).

The coordinate systems of the fields are 'half-normed', because they 
contain already the length units from the position system, but not the 
units for field strength.

A vector component is now e.g. a postion along the x-axis (x, 0, 0), 
which is also a vector.

For the x-component of the electric field-strength of an electron we 
have (X, 0, 0).

x, y, z, L, M, N, Y, X and Z are dimensionless numbers, because the 
coordinate system provides the units.

Since you can add dimensionless numbers, you could add N and Y.


But still such an operation has to make sense.


TH