Date: Mon, 15 Jul 2024 12:16:11 +0200
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Subject: Re: Approximately 300,000 km/s With Respect To What?
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W dniu 15.07.2024 o 11:05, Mikko pisze:
> On 2024-07-15 06:26:42 +0000, Thomas Heger said:
> 
>> Am Sonntag000014, 14.07.2024 um 12:19 schrieb Mikko:
>>> On 2024-07-13 08:08:44 +0000, Thomas Heger said:
>>>
>>>> Am Freitag000012, 12.07.2024 um 11:26 schrieb Mikko:
>>>>> On 2024-07-11 19:58:02 +0000, amirjf nin said:
>>>>>
>>>>>> Approximately 300,000 km/s with respect to what?
>>>>>
>>>>> Whenever the speec of something is measured it is measured with 
>>>>> respect
>>>>> to someting else. The report should make clear what is the 
>>>>> reference that
>>>>> is considered stationary. Usually it is the instruments used in the
>>>>> measurement, and usually but not always they are at rest with 
>>>>> restpect to
>>>>> Earth surface at the place of the measurement.
>>>>>
>>>>
>>>> 'Stationary' can be understood as 'not moving' and that as 'having
>>>>  velocity zero'.
>>>
>>> Yes, that is what the word means.
>>>
>>>> But velocity would require a reference point, in respect to which 
>>>> the object does not move.
>>>
>>> That gives you a revefernce point: the object does not move in 
>>> respect to
>>> itself.
>>>
>>
>> Actually I have used this setting in my 'book' and declared, that all 
>> observers regard themselves as non-moving.
> 
> That is possible but not always the best idea. In the real world an 
> observer
> often considers oneself as moving and someting else as stationary.

But we can announce he is just a stupid crank,
not understanding the ingenious concepts of
our magnificient gurus - and ignore him.
Praise  The Holy Symmetry!