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Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod.

From Sylvia Else <sylvia@not.at.this.address>
Newsgroups sci.physics.relativity
Subject Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod.
Date 2017-02-27 13:04 +1100
Message-ID <ehhfomF90enU5@mid.individual.net> (permalink)
References (8 earlier) <o8nkpp$1b41$1@gioia.aioe.org> <eh9h37Fle4sU2@mid.individual.net> <o8qbch$1rcj$1@gioia.aioe.org> <1bed4397-a751-467e-84bc-d8b850e6fa9c@googlegroups.com> <o8uoai$121n$1@gioia.aioe.org>

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On 27/02/2017 1:23 AM, HGW, DSc. wrote:
> On 25/02/17 10:33, sdru.product@gmail.com wrote:
>> On Friday, February 24, 2017 at 12:16:53 PM UTC-10, HGW... DSc. wrote:
>>
>>>>> Are you raving mad?. Time has nothing to do with the rod's absolute
>>>>> length.
>>>>
>>>> It doesn't affect the proper length of the rod, that's true.
>>>>
>>>> It does impact on the length measured in other frames.
>>>
>>> What the hell are you raving about now? Nothing happens to the rod no
>>> matter who looks at it.
>>
>> Exactly! But extrinsic properties such as kinetic energy, velocity,
>> length, etc.
>> vary depending on the frame from which it is observed.
>
> Neither kinetic energy nor velocity are properties of the rod. An
> absolute length is DEFINED by the rod, the same in all frames.

Observers in all frames can calculate the proper length of the rod, and 
all will obtain the same value for it. You can call the proper length 
the absolute length if you insist on using different words, but it 
doesn't alter the fact that different observers will obtain different 
lengths in their respective frames, where that length is the distance 
between the ends of the rod taken at the same moment in time in the frame.

Sylvia.

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Thread

Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "HGW, DSc." <HG@....> - 2017-02-22 05:19 +1100
  Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. alsor@interia.pl - 2017-02-22 12:58 -0800
    Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. JanPB <filmart@gmail.com> - 2017-02-22 13:47 -0800
      Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. alsor@interia.pl - 2017-02-22 17:33 -0800
        Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. JanPB <filmart@gmail.com> - 2017-02-23 12:25 -0800
  Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. JanPB <filmart@gmail.com> - 2017-02-22 13:46 -0800
    Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "HGW... DSc." <hgw@....> - 2017-02-23 08:53 +1100
      Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. JanPB <filmart@gmail.com> - 2017-02-22 14:04 -0800
        Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "HGW... DSc." <hgw@....> - 2017-02-23 09:51 +1100
          Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Sylvia Else <sylvia@not.at.this.address> - 2017-02-23 12:36 +1100
            Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "HGW... DSc." <hgw@....> - 2017-02-23 19:32 +1100
              Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Sylvia Else <sylvia@not.at.this.address> - 2017-02-23 19:37 +1100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. mlwozniak@wp.pl - 2017-02-23 00:55 -0800
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "HGW... DSc." <hgw@....> - 2017-02-24 08:39 +1100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Sylvia Else <sylvia@not.at.this.address> - 2017-02-24 12:37 +1100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "HGW... DSc." <hgw@....> - 2017-02-25 09:16 +1100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. sdru.product@gmail.com - 2017-02-24 15:07 -0800
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "HGW... DSc." <hgw@....> - 2017-02-25 19:47 +1100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. sdru.product@gmail.com - 2017-02-25 02:18 -0800
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "HGW... DSc." <hgw@....> - 2017-02-26 05:58 +1100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Odd Bodkin <bodkinodd@gmail.com> - 2017-02-25 13:32 -0600
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Bret Noss <osotr@rwtropsws.org> - 2017-02-25 19:43 +0000
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. pnalsing@gmail.com - 2017-02-25 20:21 -0800
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "Paul B. Andersen" <relativity@paulba.no> - 2017-02-26 22:04 +0100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "HGW... DSc." <hgw@....> - 2017-02-27 08:22 +1100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Sylvia Else <sylvia@not.at.this.address> - 2017-02-25 21:23 +1100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "HGW... DSc." <hgw@....> - 2017-02-26 05:52 +1100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Sylvia Else <sylvia@not.at.this.address> - 2017-02-27 13:01 +1100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "HGW... DSc." <hgw@....> - 2017-02-28 10:08 +1100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Sylvia Else <sylvia@not.at.this.address> - 2017-02-28 13:40 +1100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "HGW, DSc." <HG@....> - 2017-03-01 04:02 +1100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. sdru.product@gmail.com - 2017-02-24 15:33 -0800
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "HGW, DSc." <HG@....> - 2017-02-27 01:23 +1100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2017-02-26 09:04 -0800
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "HGW... DSc." <hgw@....> - 2017-02-27 08:30 +1100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. sdru.product@gmail.com - 2017-02-26 15:30 -0800
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2017-02-27 03:45 -0800
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Odd Bodkin <bodkinodd@gmail.com> - 2017-02-27 07:20 -0600
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Odd Bodkin <bodkinodd@gmail.com> - 2017-02-27 07:20 -0600
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Poutnik <poutnik4nntp@gmail.com> - 2017-02-27 14:38 +0100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2017-02-27 07:47 -0800
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "HGW... DSc." <hgw@....> - 2017-02-28 10:16 +1100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-02-27 16:27 -0800
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. sdru.product@gmail.com - 2017-02-27 11:41 -0800
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. sdru.product@gmail.com - 2017-02-27 11:51 -0800
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. sdru.product@gmail.com - 2017-02-27 11:25 -0800
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Odd Bodkin <bodkinodd@gmail.com> - 2017-02-27 13:32 -0600
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Odd Bodkin <bodkinodd@gmail.com> - 2017-02-26 15:28 -0600
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "HGW... DSc." <hgw@....> - 2017-02-28 10:12 +1100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Odd Bodkin <bodkinodd@gmail.com> - 2017-02-27 18:44 -0600
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. sdru.product@gmail.com - 2017-02-27 18:24 -0800
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. sdru.product@gmail.com - 2017-02-27 18:26 -0800
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Gary Harnagel <hitlong@yahoo.com> - 2017-02-27 18:39 -0800
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "HGW, DSc." <HG@....> - 2017-03-01 04:11 +1100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Odd Bodkin <bodkinodd@gmail.com> - 2017-02-28 11:57 -0600
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "HGW, DSc." <HG@....> - 2017-03-02 04:56 +1100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Sylvia Else <sylvia@not.at.this.address> - 2017-02-27 13:04 +1100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. mlwozniak@wp.pl - 2017-02-26 23:23 -0800
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Sylvia Else <sylvia@not.at.this.address> - 2017-02-27 19:46 +1100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. mlwozniak@wp.pl - 2017-02-27 01:03 -0800
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Sylvia Else <sylvia@not.at.this.address> - 2017-02-28 13:41 +1100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. mlwozniak@wp.pl - 2017-02-27 23:16 -0800
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "HGW... DSc." <hgw@....> - 2017-02-28 10:18 +1100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Sylvia Else <sylvia@not.at.this.address> - 2017-02-28 15:37 +1100
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "HGW, DSc." <HG@....> - 2017-03-01 04:15 +1100
              Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Odd Bodkin <bodkinodd@gmail.com> - 2017-02-24 08:05 -0600
                Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "HGW... DSc." <hgw@....> - 2017-02-25 09:18 +1100
          Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Odd Bodkin <bodkinodd@gmail.com> - 2017-02-25 13:36 -0600
            Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "HGW... DSc." <hgw@....> - 2017-02-26 07:09 +1100
        Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. mlwozniak@wp.pl - 2017-02-22 15:00 -0800
      Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. Odd Bodkin <bodkinodd@gmail.com> - 2017-02-24 10:12 -0600
        Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. sdru.product@gmail.com - 2017-02-24 12:25 -0800
          Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "HGW... DSc." <hgw@....> - 2017-02-25 09:20 +1100
        Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "HGW... DSc." <hgw@....> - 2017-02-25 09:26 +1100
  Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. rotchm <rotchm@gmail.com> - 2017-02-22 18:20 -0800
    Re: Physics Lesson for Dingleberrries: How to Measure a Moving Rod. "HGW... DSc." <hgw@....> - 2017-02-23 19:41 +1100

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