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Path: ...!local-3.nntp.ord.giganews.com!Xl.tags.giganews.com!local-1.nntp.ord.giganews.com!news.giganews.com.POSTED!not-for-mail NNTP-Posting-Date: Mon, 27 May 2024 21:05:02 +0000 From: neus <neus@elk.Net.inv> Subject: Re: Location Newsgroups: sci.physics.relativity References: <4J6cnQKj_LYfec37nZ2dnZeNn_qdnZ2d@giganews.com> <lbg0afF6r27U1@mid.individual.net> Date: Mon, 27 May 2024 22:02:19 +0100 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:91.0) Gecko/20100101 Firefox/91.0 SeaMonkey/2.53.18.2 MIME-Version: 1.0 In-Reply-To: <lbg0afF6r27U1@mid.individual.net> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Message-ID: <6l6dnfCLcNLjaMn7nZ2dnZeNn_SdnZ2d@giganews.com> Lines: 49 X-Usenet-Provider: http://www.giganews.com X-Trace: sv3-gPtrwqzSDxmrp+GPVGGuFbA0HlsjKPpwiT0jjNc0phausk7QwUzduH+7dR9zwNbwcZ5vdn0x3mzJ8PD!EU3DwOr8AgDMqpLDcESlBDGnW7OQBa9xVoLupXS6gx97iDieGGskpHkMEjCm20YbboTRMuAFCyY4 X-Complaints-To: abuse@giganews.com X-DMCA-Notifications: http://www.giganews.com/info/dmca.html X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.40 Bytes: 2870 Thomas Heger wrote: > Am Freitag000024, 24.05.2024 um 21:05 schrieb neus: >> >> Given three or four coordinates one can find most things in space. >> >> What if those coordinates are jittery, due to the ripples in >> spacetime, caused by gravity waves, how does one find an electron. > > Coordinates always refer to a coordinate system. > > A coordinate system has a zero point and a number of axes, which are > somehow normed and defined. > > E.g you have a large room and define the lower south-east corner as zero > point (of your coordinate system) and the three axes x, y, z as 'North', > 'West' and 'hight'. > > 'The norm' means, that you have also defined the meaning of '1' (here > unit of length). > > In SI-units you take the unit 'meter' and can then decribe a point in > that room by a set of three number called 'position vector'. > > e.g. (1, 2, 3) denotes a point in that coordinate system (aka 'location'). > > Other systems of coordinates are also possible. > > Commonly used are spherical coordinates, because our home planet (Earth) > has a roughly spherical surface and we usually live upon that. > > > But if now the zero-point wiggles for some reason (like e.g. an > Earthquake), the coordinates wiggle, too. > > But that would not alter the points in space, if they stay in place. > > That's unfortunate for an observer at the zero spot, but usually no big > deal. > > > TH ------------------------ If I move from one spot to another, I mimic the motion of an earthquake. But this motion takes place on a carpet of spacetime, which I couldn't mimic. It's a different mambo altogether.