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Groups > sci.physics.relativity > #580967
| From | Thomas Heger <ttt_heg@web.de> |
|---|---|
| Newsgroups | sci.physics.relativity |
| Subject | Re: New rewritten version of 'annotated version of SRT' |
| Date | 2022-03-25 08:16 +0100 |
| Message-ID | <ja58ifFdcdbU1@mid.individual.net> (permalink) |
| References | (24 earlier) <t0qlb2$1999$2@gioia.aioe.org> <j9telvFs7hqU1@mid.individual.net> <t1df7p$12dg$1@gioia.aioe.org> <ja04ghFdj3cU1@mid.individual.net> <t1jgj1$h34$1@gioia.aioe.org> |
Am 25.03.2022 um 05:31 schrieb Michael Moroney: > On 3/23/2022 4:36 AM, Thomas Heger wrote: >> Am 22.03.2022 um 22:31 schrieb Michael Moroney: >>> On 3/22/2022 4:11 AM, Thomas Heger wrote: >>>> Am 15.03.2022 um 19:19 schrieb Michael Moroney: >>>>> On 3/15/2022 3:17 AM, Thomas Heger wrote: >>>>>> Am 14.03.2022 um 17:27 schrieb Michael Moroney: >>>>>>> Not a problem. >>>>>>> >>>>>>> 1) The electron could be flying along in a straight line when at >>>>>>> t=0, >>>>>>> the (electro)magnetic field is switched on. >>>>>> >>>>>> ?????? >>>>>> >>>>>> That IS a VERY serious problem, because VERY large magnets (like in a >>>>>> synchroton), can take quite a while to build up a static magnetic >>>>>> field. >>>>>> >>>>>> >>>>> And what does this have to do with the price of tea in China? >>>> >>>> >>>> It has something to do with your comment, that the magnet could be >>>> switched on, once the electron enters at t=0. >>>> >>>> I wanted to mention, that this is not possible, because a sharp >>>> steplike increase of the magnetic field strength in a magnet is >>>> impossible. >>> >>> And...? >>> >>> There are no electromagnets with a perfect step function response. >> >> But YOU wanted to switch the magnet one in that moment, when the >> electron passes by. > > No, YOU were whining that the electron wasn't going in a straight line > before it was measured. Despite the irrelevance of that, you kept > whining about it, so I offered that as a solution. Instead, you found > *another* thing to whine about. I wrote my annotations from the perspective of a hypothetical professor, who treated the text in question as the homework of a student. Now my aim was, to find every single error, whether important or not, even if it is a very small error. Now 'curved approach' is not 'streight approach', hence 'streight approach' must be an error or 'homogenous field' must be an error. One of them must be wrong, but which one, is not my concern, because I only wanted to mark the errors. What the correct solution is, was not my business, because I only returned the paper back to the student with a lot of remarks. I also gave him the advise, to try something else than theoretical physics. ... TH
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Re: New rewritten version of 'annotated version of SRT' Thomas Heger <ttt_heg@web.de> - 2022-03-22 09:11 +0100
Re: New rewritten version of 'annotated version of SRT' Michael Moroney <moroney@world.std.spaamtrap.com> - 2022-03-22 17:31 -0400
Re: New rewritten version of 'annotated version of SRT' Thomas Heger <ttt_heg@web.de> - 2022-03-23 09:36 +0100
Re: New rewritten version of 'annotated version of SRT' Michael Moroney <moroney@world.std.spaamtrap.com> - 2022-03-25 00:31 -0400
Re: New rewritten version of 'annotated version of SRT' Thomas Heger <ttt_heg@web.de> - 2022-03-25 08:16 +0100
Re: New rewritten version of 'annotated version of SRT' Michael Moroney <moroney@world.std.spaamtrap.com> - 2022-03-26 15:43 -0400
Re: New rewritten version of 'annotated version of SRT' Thomas Heger <ttt_heg@web.de> - 2022-03-27 19:40 +0200
Re: New rewritten version of 'annotated version of SRT' "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2022-03-28 10:07 +0200
Re: New rewritten version of 'annotated version of SRT' Odd Bodkin <bodkinodd@gmail.com> - 2022-03-28 13:09 +0000
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