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Re: Does anyone really know the physical cause for time dilation and length contraction?

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On 21/05/2016 9:19 AM, kenseto wrote:
> On Friday, May 20, 2016 at 10:24:10 AM UTC-4, Sam Wormley wrote:
>> On 5/19/16 7:30 PM, kenseto wrote:
>>> On Thursday, May 19, 2016 at 4:01:20 PM UTC-4, Sam Wormley wrote:
>>>>> On 5/19/16 2:11 PM, jay moseley wrote:
>>>>>>> In other words you have no proof...
>>>>>
>>>>>     In physics, it's called evidence. And there is plenty of evidence.
>>>>>
>>>>>     A muon with such and such momentum and energy can only be created
>>>>>     by a cosmic ray event. We know from other detections of the event its
>>>>>     height above the detector. The fact that the muon was detected at
>>>>>     ground level says that the relativistic gamma had to be greater than
>>>>>     so and so.
>>>>>
>>>>>     There is no doubt that the detected muon traversed the distance
>>>>>     before it could decay.
>>>>>     http://edu-observatory.org/RaySociety/CosmicRays/CosmicMuon.png
>>>>>     http://edu-observatory.org/RaySociety/CosmicRays/Week1.html
>>
>>
>>> There is n doubt that 2.2 us on the muon clock is worth gamma*2.2 us on the earth clock and that's why the muon is able to travel the great distance before decaying.
>>
>>     However, from the perspective of the muon, the distance traveled is
>>     foreshortened by the factor of gamma.
>
> No the distance remains the same. The decay time is lengthened to gamma*2.2 us and that's why it is able to reach the ground before decaying.

You're suggesting that physical processes take longer, as measured in 
seconds. This of course would have to include the physical processes 
used in the measurement of seconds, such that an allowance would have to 
be made accordingly when interpreting the readings on clocks.

Any reasonable observer would conclude that this is an arbitrary 
redefinition of the second, which would appear consistently throughout 
the physics of moving objects (moving relative to some preferred frame), 
and that life would be a lot simpler if the redefinition were removed, 
such that a second as measured by a clock co-moving with the muon 
actually is the second that appears in the physical laws.

The result would be the removal of a need for a preferred frame, and a 
simple way of transforming between frames. That is, special relativity.

Now I'll go back to ignoring you.

Sylvia.


>>
>>     See: Time Dilation of Moving Particles
>>     https://en.m.wikipedia.org/wiki/Time_dilation_of_moving_particles
>>
>>
>>
>>
>> --
>>
>> sci.physics is an unmoderated newsgroup dedicated
>> to the discussion of physics, news from the physics
>> community, and physics-related social issues.

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Re: Does anyone really know the physical cause for time dilation and length contraction? Sylvia Else <sylvia@not.at.this.address> - 2016-05-27 11:54 +1000
  Re: Does anyone really know the physical cause for time dilation and length contraction? kenseto <setoken@att.net> - 2016-05-27 07:10 -0700
    Re: Does anyone really know the physical cause for time dilation and length contraction? Sam Wormley <swormley1@gmail.com> - 2016-05-27 09:30 -0500
      Re: Does anyone really know the physical cause for time dilation and length contraction? kenseto <setoken@att.net> - 2016-05-28 10:06 -0700
        Re: Does anyone really know the physical cause for time dilation and length contraction? Sam Wormley <swormley1@gmail.com> - 2016-05-28 13:33 -0500

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