Re: Questions about the Equivalence Principle (EP) and GR

Did Einstein "derive" the field equation using the 5 postulates of GR, or did he guess what they had to be based on what the postulates implied? I ask this because I recall reading that the field equations published in his 1916 paper were those he had rejected around 1913. How could the final

Re: Questions about the Equivalence Principle (EP) and GR

On Wednesday, April 24, 2019 at 8:59:52 PM UTC-5, Brent wrote: > > > > On 4/24/2019 6:36 PM, agrays...@gmail.com wrote: > > > > On Wednesday, April 24, 2019 at 6:46:49 PM UTC-6, Brent wrote: >> >> >> >> On 4/24/2019 4:17 PM, agrays...@gmail.com wrote: >> >> >> >> On Wednesday, April 24, 2019

Re: Questions about the Equivalence Principle (EP) and GR

On Wednesday, April 24, 2019 at 6:17:14 PM UTC-5, agrays...@gmail.com wrote: > > > > On Wednesday, April 24, 2019 at 5:11:13 PM UTC-6, agrays...@gmail.com > wrote: >> >> >> >> On Wednesday, April 24, 2019 at 3:34:28 PM UTC-6, Brent wrote: >>> >>> >>> >>> On 4/21/2019 7:35 PM,

Re: Questions about the Equivalence Principle (EP) and GR

On 4/24/2019 6:36 PM, agrayson2...@gmail.com wrote: On Wednesday, April 24, 2019 at 6:46:49 PM UTC-6, Brent wrote: On 4/24/2019 4:17 PM, agrays...@gmail.com wrote: On Wednesday, April 24, 2019 at 5:11:13 PM UTC-6, agrays...@gmail.com wrote: On Wednesday, April

Re: Questions about the Equivalence Principle (EP) and GR

On Wednesday, April 24, 2019 at 6:46:49 PM UTC-6, Brent wrote: > > > > On 4/24/2019 4:17 PM, agrays...@gmail.com wrote: > > > > On Wednesday, April 24, 2019 at 5:11:13 PM UTC-6, agrays...@gmail.com > wrote: >> >> >> >> On Wednesday, April 24, 2019 at 3:34:28 PM UTC-6, Brent wrote: >>> >>>

Re: Questions about the Equivalence Principle (EP) and GR

On 4/24/2019 4:17 PM, agrayson2...@gmail.com wrote: On Wednesday, April 24, 2019 at 5:11:13 PM UTC-6, agrays...@gmail.com wrote: On Wednesday, April 24, 2019 at 3:34:28 PM UTC-6, Brent wrote: On 4/21/2019 7:35 PM, agrays...@gmail.com wrote: On Sunday, April 21,

Re: Questions about the Equivalence Principle (EP) and GR

On Wednesday, April 24, 2019 at 6:04:43 PM UTC-6, Brent wrote: > > > > On 4/24/2019 4:11 PM, agrays...@gmail.com wrote: > > > > On Wednesday, April 24, 2019 at 3:34:28 PM UTC-6, Brent wrote: >> >> >> >> On 4/21/2019 7:35 PM, agrays...@gmail.com wrote: >> >> >> >> On Sunday, April 21, 2019 at

Re: Questions about the Equivalence Principle (EP) and GR

On 4/24/2019 4:11 PM, agrayson2...@gmail.com wrote: On Wednesday, April 24, 2019 at 3:34:28 PM UTC-6, Brent wrote: On 4/21/2019 7:35 PM, agrays...@gmail.com wrote: On Sunday, April 21, 2019 at 8:07:28 PM UTC-6, Brent wrote: On 4/21/2019 6:31 PM, agrays...@gmail.com

Re: Questions about the Equivalence Principle (EP) and GR

On Wednesday, April 24, 2019 at 5:11:13 PM UTC-6, agrays...@gmail.com wrote: > > > > On Wednesday, April 24, 2019 at 3:34:28 PM UTC-6, Brent wrote: >> >> >> >> On 4/21/2019 7:35 PM, agrays...@gmail.com wrote: >> >> >> >> On Sunday, April 21, 2019 at 8:07:28 PM UTC-6, Brent wrote: >>> >>> >>>

Re: Questions about the Equivalence Principle (EP) and GR

On Wednesday, April 24, 2019 at 3:34:28 PM UTC-6, Brent wrote: > > > > On 4/21/2019 7:35 PM, agrays...@gmail.com wrote: > > > > On Sunday, April 21, 2019 at 8:07:28 PM UTC-6, Brent wrote: >> >> >> >> On 4/21/2019 6:31 PM, agrays...@gmail.com wrote: >> >> *Here's something odd. At 9:45 in

Re: Questions about the Equivalence Principle (EP) and GR

On 4/21/2019 7:35 PM, agrayson2...@gmail.com wrote: On Sunday, April 21, 2019 at 8:07:28 PM UTC-6, Brent wrote: On 4/21/2019 6:31 PM, agrays...@gmail.com wrote: *Here's something odd. At 9:45 in Susskind's Lecture 2 on GR, he says the metric tensor is a Kronecker delta

Re: Questions about the Equivalence Principle (EP) and GR

On Wednesday, April 24, 2019 at 11:29:36 AM UTC-6, agrays...@gmail.com wrote: > > > > On Wednesday, April 24, 2019 at 11:06:10 AM UTC-6, Bruno Marchal wrote: >> >> >> On 23 Apr 2019, at 13:39, agrays...@gmail.com wrote: >> >> >> >> On Tuesday, April 23, 2019 at 4:00:26 AM UTC-6, Bruno Marchal

Re: Questions about the Equivalence Principle (EP) and GR

On Wednesday, April 24, 2019 at 11:06:10 AM UTC-6, Bruno Marchal wrote: > > > On 23 Apr 2019, at 13:39, agrays...@gmail.com wrote: > > > > On Tuesday, April 23, 2019 at 4:00:26 AM UTC-6, Bruno Marchal wrote: >> >> >> On 20 Apr 2019, at 23:14, agrays...@gmail.com wrote: >> >> >> >> On Friday,

Re: Questions about the Equivalence Principle (EP) and GR

> On 23 Apr 2019, at 13:39, agrayson2...@gmail.com wrote: > > > > On Tuesday, April 23, 2019 at 4:00:26 AM UTC-6, Bruno Marchal wrote: > >> On 20 Apr 2019, at 23:14, agrays...@gmail.com wrote: >> >> >> >> On Friday, April 19, 2019 at 2:53:00 AM UTC-6, Bruno Marchal wrote: >> >>> On 19

Re: Questions about the Equivalence Principle (EP) and GR

On Tuesday, April 23, 2019 at 4:00:26 AM UTC-6, Bruno Marchal wrote: > > > On 20 Apr 2019, at 23:14, agrays...@gmail.com wrote: > > > > On Friday, April 19, 2019 at 2:53:00 AM UTC-6, Bruno Marchal wrote: >> >> >> On 19 Apr 2019, at 04:08, agrays...@gmail.com wrote: >> >> >> >> On Thursday,

Re: Questions about the Equivalence Principle (EP) and GR

> On 21 Apr 2019, at 08:07, Philip Thrift wrote: > > > > On Saturday, April 20, 2019 at 4:14:27 PM UTC-5, agrays...@gmail.com wrote: > > > On Friday, April 19, 2019 at 2:53:00 AM UTC-6, Bruno Marchal wrote: > >> On 19 Apr 2019, at 04:08, agrays...@gmail.com <> wrote: >> >> >> >> On

Re: Questions about the Equivalence Principle (EP) and GR

> On 20 Apr 2019, at 23:14, agrayson2...@gmail.com wrote: > > > > On Friday, April 19, 2019 at 2:53:00 AM UTC-6, Bruno Marchal wrote: > >> On 19 Apr 2019, at 04:08, agrays...@gmail.com wrote: >> >> >> >> On Thursday, April 18, 2019 at 6:53:33 PM UTC-6, Brent wrote: >> Sorry, I don't

Re: Questions about the Equivalence Principle (EP) and GR

On Sunday, April 21, 2019 at 6:59:25 PM UTC-5, agrays...@gmail.com wrote: > > > > On Sunday, April 21, 2019 at 5:54:33 PM UTC-6, Brent wrote: >> >> >> >> On 4/21/2019 2:20 AM, agrays...@gmail.com wrote: >> >> >> >> On Saturday, April 20, 2019 at 9:51:13 PM UTC-6, Brent wrote: >>> >>> >>> >>> On

Re: Questions about the Equivalence Principle (EP) and GR

On Sunday, April 21, 2019 at 8:07:28 PM UTC-6, Brent wrote: > > > > On 4/21/2019 6:31 PM, agrays...@gmail.com wrote: > > *Here's something odd. At 9:45 in Susskind's Lecture 2 on GR, he says the > metric tensor is a Kronecker delta function. But I could swear that the > diagonal of -1,1,1,1

Re: Questions about the Equivalence Principle (EP) and GR

On 4/21/2019 6:31 PM, agrayson2...@gmail.com wrote: *Here's something odd. At 9:45 in Susskind's Lecture 2 on GR, he says the metric tensor is a Kronecker delta function. But I could swear that the diagonal of -1,1,1,1 represents flat space in SR. AG * What's odd about that?  Flat space is

Re: Questions about the Equivalence Principle (EP) and GR

On Sunday, April 21, 2019 at 5:59:25 PM UTC-6, agrays...@gmail.com wrote: > > > > On Sunday, April 21, 2019 at 5:54:33 PM UTC-6, Brent wrote: >> >> >> >> On 4/21/2019 2:20 AM, agrays...@gmail.com wrote: >> >> >> >> On Saturday, April 20, 2019 at 9:51:13 PM UTC-6, Brent wrote: >>> >>> >>> >>> On

Re: Questions about the Equivalence Principle (EP) and GR

On Sunday, April 21, 2019 at 5:54:33 PM UTC-6, Brent wrote: > > > > On 4/21/2019 2:20 AM, agrays...@gmail.com wrote: > > > > On Saturday, April 20, 2019 at 9:51:13 PM UTC-6, Brent wrote: >> >> >> >> On 4/20/2019 2:14 PM, agrays...@gmail.com wrote: >> >> The following (long!) video can also

Re: Questions about the Equivalence Principle (EP) and GR

On 4/21/2019 2:20 AM, agrayson2...@gmail.com wrote: On Saturday, April 20, 2019 at 9:51:13 PM UTC-6, Brent wrote: On 4/20/2019 2:14 PM, agrays...@gmail.com wrote: The following (long!) video can also help (well, it did help me)

Re: Questions about the Equivalence Principle (EP) and GR

On Sunday, April 21, 2019 at 5:23:33 AM UTC-5, agrays...@gmail.com wrote: > > > > On Sunday, April 21, 2019 at 12:07:07 AM UTC-6, Philip Thrift wrote: >> >> >> >> On Saturday, April 20, 2019 at 4:14:27 PM UTC-5, agrays...@gmail.com >> wrote: >>> >>> >>> >>> On Friday, April 19, 2019 at 2:53:00

Re: Questions about the Equivalence Principle (EP) and GR

On Sunday, April 21, 2019 at 12:07:07 AM UTC-6, Philip Thrift wrote: > > > > On Saturday, April 20, 2019 at 4:14:27 PM UTC-5, agrays...@gmail.com > wrote: >> >> >> >> On Friday, April 19, 2019 at 2:53:00 AM UTC-6, Bruno Marchal wrote: >>> >>> >>> On 19 Apr 2019, at 04:08, agrays...@gmail.com

Re: Questions about the Equivalence Principle (EP) and GR

On Saturday, April 20, 2019 at 9:51:13 PM UTC-6, Brent wrote: > > > > On 4/20/2019 2:14 PM, agrays...@gmail.com wrote: > > The following (long!) video can also help (well, it did help me) >> >> https://www.youtube.com/watch?v=foRPKAKZWx8 >> >> >> Bruno >> > > *I've been viewing this video. I

Re: Questions about the Equivalence Principle (EP) and GR

On Saturday, April 20, 2019 at 4:14:27 PM UTC-5, agrays...@gmail.com wrote: > > > > On Friday, April 19, 2019 at 2:53:00 AM UTC-6, Bruno Marchal wrote: >> >> >> On 19 Apr 2019, at 04:08, agrays...@gmail.com wrote: >> >> >> >> On Thursday, April 18, 2019 at 6:53:33 PM UTC-6, Brent wrote: >>> >>>

Re: Questions about the Equivalence Principle (EP) and GR

On 4/20/2019 2:14 PM, agrayson2...@gmail.com wrote: The following (long!) video can also help (well, it did help me) https://www.youtube.com/watch?v=foRPKAKZWx8 Bruno *I've been viewing this video. I don't see how he

Re: Questions about the Equivalence Principle (EP) and GR

On Friday, April 19, 2019 at 2:53:00 AM UTC-6, Bruno Marchal wrote: > > > On 19 Apr 2019, at 04:08, agrays...@gmail.com wrote: > > > > On Thursday, April 18, 2019 at 6:53:33 PM UTC-6, Brent wrote: >> >> Sorry, I don't remember what, if anything, I intended to text. >> >> I'm not expert on how

Re: Questions about the Equivalence Principle (EP) and GR

> On 19 Apr 2019, at 04:08, agrayson2...@gmail.com wrote: > > > > On Thursday, April 18, 2019 at 6:53:33 PM UTC-6, Brent wrote: > Sorry, I don't remember what, if anything, I intended to text. > > I'm not expert on how Einstein arrived at his famous field equations. I know > that he

Re: Questions about the Equivalence Principle (EP) and GR

On Thu, Apr 18, 2019 at 09:13:34PM -0700, agrayson2...@gmail.com wrote: > > > On Thursday, April 18, 2019 at 9:20:36 PM UTC-6, agrays...@gmail.com wrote: > > > > On Thursday, April 18, 2019 at 8:08:58 PM UTC-6, agrays...@gmail.com > wrote: > > > > On Thursday, April 18, 2019

Re: Questions about the Equivalence Principle (EP) and GR

On 4/18/2019 8:20 PM, agrayson2...@gmail.com wrote: On Thursday, April 18, 2019 at 8:08:58 PM UTC-6, agrays...@gmail.com wrote: On Thursday, April 18, 2019 at 6:53:33 PM UTC-6, Brent wrote: Sorry, I don't remember what, if anything, I intended to text. I'm not

Re: Questions about the Equivalence Principle (EP) and GR

On Thursday, April 18, 2019 at 9:20:36 PM UTC-6, agrays...@gmail.com wrote: > > > > On Thursday, April 18, 2019 at 8:08:58 PM UTC-6, agrays...@gmail.com > wrote: >> >> >> >> On Thursday, April 18, 2019 at 6:53:33 PM UTC-6, Brent wrote: >>> >>> Sorry, I don't remember what, if anything, I

Re: Questions about the Equivalence Principle (EP) and GR

Very interesting.  Thanks. Brent On 4/18/2019 7:08 PM, agrayson2...@gmail.com wrote: Here's a link which might help; https://arxiv.org/pdf/1608.05752.pdf AG -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group

Re: Questions about the Equivalence Principle (EP) and GR

On Thursday, April 18, 2019 at 8:08:58 PM UTC-6, agrays...@gmail.com wrote: > > > > On Thursday, April 18, 2019 at 6:53:33 PM UTC-6, Brent wrote: >> >> Sorry, I don't remember what, if anything, I intended to text. >> >> I'm not expert on how Einstein arrived at his famous field equations. I

Re: Questions about the Equivalence Principle (EP) and GR

On Thursday, April 18, 2019 at 6:53:33 PM UTC-6, Brent wrote: > > Sorry, I don't remember what, if anything, I intended to text. > > I'm not expert on how Einstein arrived at his famous field equations. I > know that he insisted on them being tensor equations so that they would > have the

Re: Questions about the Equivalence Principle (EP) and GR

Sorry, I don't remember what, if anything, I intended to text. I'm not expert on how Einstein arrived at his famous field equations.  I know that he insisted on them being tensor equations so that they would have the same form in all coordinate systems. That may sound like a mathematical

Re: Questions about the Equivalence Principle (EP) and GR

On Wednesday, April 17, 2019 at 7:16:45 PM UTC-6, agrays...@gmail.com wrote: > > *I see no new text in this message. AG* > Brent; if you have time, please reproduce the text you intended. I recall reading that before Einstein published his GR paper, he used a trial and error method to

Re: Questions about the Equivalence Principle (EP) and GR

> On 17 Apr 2019, at 01:41, 'Brent Meeker' via Everything List > wrote: > > > > On 4/16/2019 7:56 AM, agrayson2...@gmail.com > wrote: >> >> >> On Monday, April 15, 2019 at 9:26:59 PM UTC-6, Brent wrote: >> >> >> On 4/15/2019 7:14 PM, agrays...@gmail.com

Re: Questions about the Equivalence Principle (EP) and GR

*I see no new text in this message. AG* On Wednesday, April 17, 2019 at 7:00:55 PM UTC-6, Brent wrote: > > > > On 4/17/2019 5:20 PM, agrays...@gmail.com wrote: > > > > On Wednesday, April 17, 2019 at 5:11:55 PM UTC-6, Brent wrote: >> >> >> >> On 4/17/2019 12:36 PM, agrays...@gmail.com wrote: >>

Re: Questions about the Equivalence Principle (EP) and GR

On 4/17/2019 5:20 PM, agrayson2...@gmail.com wrote: On Wednesday, April 17, 2019 at 5:11:55 PM UTC-6, Brent wrote: On 4/17/2019 12:36 PM, agrays...@gmail.com wrote: On Wednesday, April 17, 2019 at 1:02:09 PM UTC-6, Brent wrote: On 4/17/2019 7:37 AM,

Re: Questions about the Equivalence Principle (EP) and GR

On Wednesday, April 17, 2019 at 5:11:55 PM UTC-6, Brent wrote: > > > > On 4/17/2019 12:36 PM, agrays...@gmail.com wrote: > > > > On Wednesday, April 17, 2019 at 1:02:09 PM UTC-6, Brent wrote: >> >> >> >> On 4/17/2019 7:37 AM, agrays...@gmail.com wrote: >> >> >> >> On Tuesday, April 16, 2019 at

Re: Questions about the Equivalence Principle (EP) and GR

On 4/17/2019 12:36 PM, agrayson2...@gmail.com wrote: On Wednesday, April 17, 2019 at 1:02:09 PM UTC-6, Brent wrote: On 4/17/2019 7:37 AM, agrays...@gmail.com wrote: On Tuesday, April 16, 2019 at 9:15:40 PM UTC-6, Brent wrote: On 4/16/2019 6:14 PM,

Re: Questions about the Equivalence Principle (EP) and GR

On Wednesday, April 17, 2019 at 1:02:09 PM UTC-6, Brent wrote: > > > > On 4/17/2019 7:37 AM, agrays...@gmail.com wrote: > > > > On Tuesday, April 16, 2019 at 9:15:40 PM UTC-6, Brent wrote: >> >> >> >> On 4/16/2019 6:14 PM, agrays...@gmail.com wrote: >> >> >> >> On Tuesday, April 16, 2019 at

Re: Questions about the Equivalence Principle (EP) and GR

On 4/17/2019 7:37 AM, agrayson2...@gmail.com wrote: On Tuesday, April 16, 2019 at 9:15:40 PM UTC-6, Brent wrote: On 4/16/2019 6:14 PM, agrays...@gmail.com wrote: On Tuesday, April 16, 2019 at 6:39:11 PM UTC-6, agrays...@gmail.com wrote: On Tuesday, April 16,

Re: Questions about the Equivalence Principle (EP) and GR

On Tuesday, April 16, 2019 at 9:15:40 PM UTC-6, Brent wrote: > > > > On 4/16/2019 6:14 PM, agrays...@gmail.com wrote: > > > > On Tuesday, April 16, 2019 at 6:39:11 PM UTC-6, agrays...@gmail.com > wrote: >> >> >> >> On Tuesday, April 16, 2019 at 6:10:16 PM UTC-6, Brent wrote: >>> >>> >>> >>>

Re: Questions about the Equivalence Principle (EP) and GR

On Tuesday, April 16, 2019 at 9:21:32 PM UTC-6, Brent wrote: > > > > On 4/16/2019 6:25 PM, agrays...@gmail.com wrote: > > > > On Tuesday, April 16, 2019 at 5:41:35 PM UTC-6, Brent wrote: >> >> >> >> On 4/16/2019 7:56 AM, agrays...@gmail.com wrote: >> >> >> >> On Monday, April 15, 2019 at

Re: Questions about the Equivalence Principle (EP) and GR

On Tuesday, April 16, 2019 at 9:15:40 PM UTC-6, Brent wrote: > > > > On 4/16/2019 6:14 PM, agrays...@gmail.com wrote: > > > > On Tuesday, April 16, 2019 at 6:39:11 PM UTC-6, agrays...@gmail.com > wrote: >> >> >> >> On Tuesday, April 16, 2019 at 6:10:16 PM UTC-6, Brent wrote: >>> >>> >>> >>>

Re: Questions about the Equivalence Principle (EP) and GR

On 4/16/2019 6:25 PM, agrayson2...@gmail.com wrote: On Tuesday, April 16, 2019 at 5:41:35 PM UTC-6, Brent wrote: On 4/16/2019 7:56 AM, agrays...@gmail.com wrote: On Monday, April 15, 2019 at 9:26:59 PM UTC-6, Brent wrote: On 4/15/2019 7:14 PM, agrays...@gmail.com

Re: Questions about the Equivalence Principle (EP) and GR

On 4/16/2019 6:14 PM, agrayson2...@gmail.com wrote: On Tuesday, April 16, 2019 at 6:39:11 PM UTC-6, agrays...@gmail.com wrote: On Tuesday, April 16, 2019 at 6:10:16 PM UTC-6, Brent wrote: On 4/16/2019 11:41 AM, agrays...@gmail.com wrote: On Monday, April 15,

Re: Questions about the Equivalence Principle (EP) and GR

On Tuesday, April 16, 2019 at 5:41:35 PM UTC-6, Brent wrote: > > > > On 4/16/2019 7:56 AM, agrays...@gmail.com wrote: > > > > On Monday, April 15, 2019 at 9:26:59 PM UTC-6, Brent wrote: >> >> >> >> On 4/15/2019 7:14 PM, agrays...@gmail.com wrote: >> >> >> >> On Friday, April 12, 2019 at

Re: Questions about the Equivalence Principle (EP) and GR

On Tuesday, April 16, 2019 at 6:39:11 PM UTC-6, agrays...@gmail.com wrote: > > > > On Tuesday, April 16, 2019 at 6:10:16 PM UTC-6, Brent wrote: >> >> >> >> On 4/16/2019 11:41 AM, agrays...@gmail.com wrote: >> >> >> >> On Monday, April 15, 2019 at 9:26:59 PM UTC-6, Brent wrote: >>> >>> >>> >>>

Re: Questions about the Equivalence Principle (EP) and GR

On Tuesday, April 16, 2019 at 6:10:16 PM UTC-6, Brent wrote: > > > > On 4/16/2019 11:41 AM, agrays...@gmail.com wrote: > > > > On Monday, April 15, 2019 at 9:26:59 PM UTC-6, Brent wrote: >> >> >> >> On 4/15/2019 7:14 PM, agrays...@gmail.com wrote: >> >> >> >> On Friday, April 12, 2019 at

Re: Questions about the Equivalence Principle (EP) and GR

On 4/16/2019 11:41 AM, agrayson2...@gmail.com wrote: On Monday, April 15, 2019 at 9:26:59 PM UTC-6, Brent wrote: On 4/15/2019 7:14 PM, agrays...@gmail.com wrote: On Friday, April 12, 2019 at 5:48:23 AM UTC-6, agrays...@gmail.com wrote: On Thursday, April 11,

Re: Questions about the Equivalence Principle (EP) and GR

On 4/16/2019 7:56 AM, agrayson2...@gmail.com wrote: On Monday, April 15, 2019 at 9:26:59 PM UTC-6, Brent wrote: On 4/15/2019 7:14 PM, agrays...@gmail.com wrote: On Friday, April 12, 2019 at 5:48:23 AM UTC-6, agrays...@gmail.com wrote: On Thursday, April 11, 2019

Re: Questions about the Equivalence Principle (EP) and GR

On Monday, April 15, 2019 at 9:26:59 PM UTC-6, Brent wrote: > > > > On 4/15/2019 7:14 PM, agrays...@gmail.com wrote: > > > > On Friday, April 12, 2019 at 5:48:23 AM UTC-6, agrays...@gmail.com wrote: >> >> >> >> On Thursday, April 11, 2019 at 10:56:08 PM UTC-6, Brent wrote: >>> >>> >>> >>> On

Re: Questions about the Equivalence Principle (EP) and GR

On Monday, April 15, 2019 at 9:26:59 PM UTC-6, Brent wrote: > > > > On 4/15/2019 7:14 PM, agrays...@gmail.com wrote: > > > > On Friday, April 12, 2019 at 5:48:23 AM UTC-6, agrays...@gmail.com wrote: >> >> >> >> On Thursday, April 11, 2019 at 10:56:08 PM UTC-6, Brent wrote: >>> >>> >>> >>> On

Re: Questions about the Equivalence Principle (EP) and GR

On 4/15/2019 8:08 PM, agrayson2...@gmail.com wrote: On Monday, April 15, 2019 at 8:14:35 PM UTC-6, agrays...@gmail.com wrote: On Friday, April 12, 2019 at 5:48:23 AM UTC-6, agray...@gmail.com wrote: On Thursday, April 11, 2019 at 10:56:08 PM UTC-6, Brent wrote:

Re: Questions about the Equivalence Principle (EP) and GR

On 4/15/2019 7:14 PM, agrayson2...@gmail.com wrote: On Friday, April 12, 2019 at 5:48:23 AM UTC-6, agrays...@gmail.com wrote: On Thursday, April 11, 2019 at 10:56:08 PM UTC-6, Brent wrote: On 4/11/2019 9:33 PM, agrays...@gmail.com wrote: On Thursday, April 11,

Re: Questions about the Equivalence Principle (EP) and GR

On Monday, April 15, 2019 at 8:14:35 PM UTC-6, agrays...@gmail.com wrote: > > > > On Friday, April 12, 2019 at 5:48:23 AM UTC-6, agrays...@gmail.com wrote: >> >> >> >> On Thursday, April 11, 2019 at 10:56:08 PM UTC-6, Brent wrote: >>> >>> >>> >>> On 4/11/2019 9:33 PM, agrays...@gmail.com wrote:

Re: Questions about the Equivalence Principle (EP) and GR

On Friday, April 12, 2019 at 5:48:23 AM UTC-6, agrays...@gmail.com wrote: > > > > On Thursday, April 11, 2019 at 10:56:08 PM UTC-6, Brent wrote: >> >> >> >> On 4/11/2019 9:33 PM, agrays...@gmail.com wrote: >> >> >> >> On Thursday, April 11, 2019 at 7:12:17 PM UTC-6, Brent wrote: >>> >>> >>> >>>

Re: Questions about the Equivalence Principle (EP) and GR

On Thursday, April 11, 2019 at 10:56:08 PM UTC-6, Brent wrote: > > > > On 4/11/2019 9:33 PM, agrays...@gmail.com wrote: > > > > On Thursday, April 11, 2019 at 7:12:17 PM UTC-6, Brent wrote: >> >> >> >> On 4/11/2019 4:53 PM, agrays...@gmail.com wrote: >> >> >> >> On Thursday, April 11, 2019 at

Re: Questions about the Equivalence Principle (EP) and GR

On Thursday, April 11, 2019 at 11:56:08 PM UTC-5, Brent wrote: > > > > On 4/11/2019 9:33 PM, agrays...@gmail.com wrote: > > > > On Thursday, April 11, 2019 at 7:12:17 PM UTC-6, Brent wrote: >> >> >> >> On 4/11/2019 4:53 PM, agrays...@gmail.com wrote: >> >> >> >> On Thursday, April 11, 2019 at

Re: Questions about the Equivalence Principle (EP) and GR

On 4/11/2019 9:33 PM, agrayson2...@gmail.com wrote: On Thursday, April 11, 2019 at 7:12:17 PM UTC-6, Brent wrote: On 4/11/2019 4:53 PM, agrays...@gmail.com wrote: On Thursday, April 11, 2019 at 4:37:39 PM UTC-6, Brent wrote: On 4/11/2019 1:58 PM, agrays...@gmail.com

Re: Questions about the Equivalence Principle (EP) and GR

On Thursday, April 11, 2019 at 7:12:17 PM UTC-6, Brent wrote: > > > > On 4/11/2019 4:53 PM, agrays...@gmail.com wrote: > > > > On Thursday, April 11, 2019 at 4:37:39 PM UTC-6, Brent wrote: >> >> >> >> On 4/11/2019 1:58 PM, agrays...@gmail.com wrote: >> >> >>> He might have been referring

Re: Questions about the Equivalence Principle (EP) and GR

On 4/11/2019 4:53 PM, agrayson2...@gmail.com wrote: On Thursday, April 11, 2019 at 4:37:39 PM UTC-6, Brent wrote: On 4/11/2019 1:58 PM, agrays...@gmail.com wrote: He might have been referring to a transformation to a tangent space where the metric tensor is

Re: Questions about the Equivalence Principle (EP) and GR

On Thursday, April 11, 2019 at 4:37:39 PM UTC-6, Brent wrote: > > > > On 4/11/2019 1:58 PM, agrays...@gmail.com wrote: > > >>> >> He might have been referring to a transformation to a tangent space where >> the metric tensor is diagonalized and its derivative at that point in >> spacetime is

Re: Questions about the Equivalence Principle (EP) and GR

On 4/11/2019 1:58 PM, agrayson2...@gmail.com wrote: He might have been referring to a transformation to a tangent space where the metric tensor is diagonalized and its derivative at that point in spacetime is zero. Does this make any sense? Sort of. Yeah, that's what

Re: Questions about the Equivalence Principle (EP) and GR

On Tuesday, April 9, 2019 at 11:09:36 PM UTC-6, Brent wrote: > > > > On 4/9/2019 6:52 PM, agrays...@gmail.com wrote: > > > > On Tuesday, April 9, 2019 at 6:41:52 PM UTC-6, Brent wrote: >> >> >> >> On 4/9/2019 5:20 PM, agrays...@gmail.com wrote: >> >> >> >> On Tuesday, April 9, 2019 at 2:40:16

Re: Questions about the Equivalence Principle (EP) and GR

On 4/9/2019 6:52 PM, agrayson2...@gmail.com wrote: On Tuesday, April 9, 2019 at 6:41:52 PM UTC-6, Brent wrote: On 4/9/2019 5:20 PM, agrays...@gmail.com wrote: On Tuesday, April 9, 2019 at 2:40:16 PM UTC-6, Brent wrote: On 4/9/2019 12:47 PM, agrays...@gmail.com

Re: Questions about the Equivalence Principle (EP) and GR

On Tuesday, April 9, 2019 at 6:41:52 PM UTC-6, Brent wrote: > > > > On 4/9/2019 5:20 PM, agrays...@gmail.com wrote: > > > > On Tuesday, April 9, 2019 at 2:40:16 PM UTC-6, Brent wrote: >> >> >> >> On 4/9/2019 12:47 PM, agrays...@gmail.com wrote: >> >> >> >> On Tuesday, April 9, 2019 at 1:35:34

Re: Questions about the Equivalence Principle (EP) and GR

On 4/9/2019 5:20 PM, agrayson2...@gmail.com wrote: On Tuesday, April 9, 2019 at 2:40:16 PM UTC-6, Brent wrote: On 4/9/2019 12:47 PM, agrays...@gmail.com wrote: On Tuesday, April 9, 2019 at 1:35:34 PM UTC-6, Brent wrote: On 4/9/2019 11:55 AM, agrays...@gmail.com

Re: Questions about the Equivalence Principle (EP) and GR

On Tuesday, April 9, 2019 at 2:40:16 PM UTC-6, Brent wrote: > > > > On 4/9/2019 12:47 PM, agrays...@gmail.com wrote: > > > > On Tuesday, April 9, 2019 at 1:35:34 PM UTC-6, Brent wrote: >> >> >> >> On 4/9/2019 11:55 AM, agrays...@gmail.com wrote: >> >> >> >> On Tuesday, April 9, 2019 at

Re: Questions about the Equivalence Principle (EP) and GR

On 4/9/2019 12:47 PM, agrayson2...@gmail.com wrote: On Tuesday, April 9, 2019 at 1:35:34 PM UTC-6, Brent wrote: On 4/9/2019 11:55 AM, agrays...@gmail.com wrote: On Tuesday, April 9, 2019 at 12:05:11 PM UTC-6, Brent wrote: On 4/9/2019 7:52 AM, agrays...@gmail.com

Re: Questions about the Equivalence Principle (EP) and GR

On Tuesday, April 9, 2019 at 1:35:34 PM UTC-6, Brent wrote: > > > > On 4/9/2019 11:55 AM, agrays...@gmail.com wrote: > > > > On Tuesday, April 9, 2019 at 12:05:11 PM UTC-6, Brent wrote: >> >> >> >> On 4/9/2019 7:52 AM, agrays...@gmail.com wrote: >> >> >> >> On Monday, April 8, 2019 at 11:16:25

Re: Questions about the Equivalence Principle (EP) and GR

On 4/9/2019 11:55 AM, agrayson2...@gmail.com wrote: On Tuesday, April 9, 2019 at 12:05:11 PM UTC-6, Brent wrote: On 4/9/2019 7:52 AM, agrays...@gmail.com wrote: On Monday, April 8, 2019 at 11:16:25 PM UTC-6, agrays...@gmail.com wrote: In GR, is there a distinction

Re: Questions about the Equivalence Principle (EP) and GR

On Tuesday, April 9, 2019 at 12:05:11 PM UTC-6, Brent wrote: > > > > On 4/9/2019 7:52 AM, agrays...@gmail.com wrote: > > > > On Monday, April 8, 2019 at 11:16:25 PM UTC-6, agrays...@gmail.com wrote: >> >> In GR, is there a distinction between coordinate systems and frames of >> reference?

Re: Questions about the Equivalence Principle (EP) and GR

On 4/9/2019 7:52 AM, agrayson2...@gmail.com wrote: On Monday, April 8, 2019 at 11:16:25 PM UTC-6, agrays...@gmail.com wrote: In GR, is there a distinction between coordinate systems and frames of reference? AG Here's the problem; there's a GR expert known to some members of this

Re: Questions about the Equivalence Principle (EP) and GR

On Monday, April 8, 2019 at 11:16:25 PM UTC-6, agrays...@gmail.com wrote: > > In GR, is there a distinction between coordinate systems and frames of > reference? AG > Here's the problem; there's a GR expert known to some members of this list, who claims GR does NOT distinguish coordinate

Re: Questions about the Equivalence Principle (EP) and GR

In GR, is there a distinction between coordinate systems and frames of reference? AG -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to

Re: Questions about the Equivalence Principle (EP) and GR

On 3/27/2019 9:34 AM, agrayson2...@gmail.com wrote: Look at the paper by Gupta and Padmanabhan that I linked to. *I looked through your posts here and do not find these papers. Please post the links. I want to spend more time reading relevant articles, than asking questions. AG*

Re: Questions about the Equivalence Principle (EP) and GR

On Tuesday, March 26, 2019 at 5:08:15 PM UTC-6, smitra wrote: > > On 26-03-2019 20:29, agrays...@gmail.com wrote: > > On Tuesday, March 26, 2019 at 11:29:08 AM UTC-6, John Clark wrote: > > > >> On Tue, Mar 26, 2019 at 1:14 PM wrote: > >> > >>> _> How do the mathematicians prove it?_ > >>

Re: Questions about the Equivalence Principle (EP) and GR

On Tuesday, March 26, 2019 at 7:58:11 PM UTC-6, Brent wrote: > > > > On 3/26/2019 12:29 PM, agrays...@gmail.com wrote: > > > > On Tuesday, March 26, 2019 at 11:29:08 AM UTC-6, John Clark wrote: >> >> On Tue, Mar 26, 2019 at 1:14 PM wrote: >> >> *> How do the mathematicians prove it?* >> >> >>

Re: Questions about the Equivalence Principle (EP) and GR

On 3/26/2019 12:29 PM, agrayson2...@gmail.com wrote: On Tuesday, March 26, 2019 at 11:29:08 AM UTC-6, John Clark wrote: On Tue, Mar 26, 2019 at 1:14 PM > wrote: /> How do the mathematicians prove it?/ Mathematicians can't prove that a physical theory is correct, all

Re: Questions about the Equivalence Principle (EP) and GR

On 3/26/2019 6:14 AM, agrayson2...@gmail.com wrote: On Tuesday, March 26, 2019 at 6:28:18 AM UTC-6, John Clark wrote: On Tue, Mar 26, 2019 at 4:40 AM > wrote: >>>Einstein never said everything is relative. Unlike velocity there is such a thing as

Re: Questions about the Equivalence Principle (EP) and GR

On 26-03-2019 20:29, agrayson2...@gmail.com wrote: On Tuesday, March 26, 2019 at 11:29:08 AM UTC-6, John Clark wrote: On Tue, Mar 26, 2019 at 1:14 PM wrote: _> How do the mathematicians prove it?_ Mathematicians can't prove that a physical theory is correct, all they can do is show that

Re: Questions about the Equivalence Principle (EP) and GR

On Tuesday, March 26, 2019 at 11:29:08 AM UTC-6, John Clark wrote: > > On Tue, Mar 26, 2019 at 1:14 PM > wrote: > > *> How do the mathematicians prove it?* > > > Mathematicians can't prove that a physical theory is correct, all they can > do is show that changing the coordinate system (for

Re: Questions about the Equivalence Principle (EP) and GR

On Tue, Mar 26, 2019 at 1:14 PM wrote: *> How do the mathematicians prove it?* Mathematicians can't prove that a physical theory is correct, all they can do is show that changing the coordinate system (for example by rotating the X and Y axis) does not result in different physical predictions.

Re: Questions about the Equivalence Principle (EP) and GR

On Tuesday, March 26, 2019 at 10:36:03 AM UTC-6, John Clark wrote: > > By the way, just 2 weeks ago the best test ever made of Einstein's > Equivalence Principle was performed in a gravitational field one million > times greater than Earth's and Einstein passed the test with flying > colors.

Re: Questions about the Equivalence Principle (EP) and GR

On Tuesday, March 26, 2019 at 9:35:41 AM UTC-6, John Clark wrote: > > On Tue, Mar 26, 2019 at 9:14 AM > wrote: > > *>* *although the field equations are claimed to be the same in all >> frames, accelerating or not, how does one prove that* >> > > Mathematicians prove things Physicists don't.

Re: Questions about the Equivalence Principle (EP) and GR

By the way, just 2 weeks ago the best test ever made of Einstein's Equivalence Principle was performed in a gravitational field one million times greater than Earth's and Einstein passed the test with flying colors. Test of the Einstein Equivalence Principle near the Galactic Center Supermassive

Re: Questions about the Equivalence Principle (EP) and GR

On Tue, Mar 26, 2019 at 9:14 AM wrote: *>* *although the field equations are claimed to be the same in all frames, > accelerating or not, how does one prove that* > Mathematicians prove things Physicists don't. Physicists show that some ideas are less wrong than others and they do that by

Re: Questions about the Equivalence Principle (EP) and GR

On Tuesday, March 26, 2019 at 6:28:18 AM UTC-6, John Clark wrote: > > On Tue, Mar 26, 2019 at 4:40 AM > wrote: > > >>>Einstein never said everything is relative. Unlike velocity there is such a thing as absolute acceleration, if that were not true the Twin Paradox could not be

Re: Questions about the Equivalence Principle (EP) and GR

On Tue, Mar 26, 2019 at 4:40 AM wrote: >>>Einstein never said everything is relative. Unlike velocity there is >>> such a thing as absolute acceleration, if that were not true the Twin >>> Paradox could not be resolved. >>> >> >> *>> But in GR don't the field equations take the same form in all

Re: Questions about the Equivalence Principle (EP) and GR

On Wednesday, March 20, 2019 at 11:13:06 PM UTC-6, agrays...@gmail.com wrote: > > > > On Wednesday, March 20, 2019 at 10:08:53 AM UTC-6, John Clark wrote: >> >> On Wed, Mar 20, 2019 at 9:16 AM wrote: >> >> * > how does GR establish the Principle of Relativity (for accelerating >>> frames)? AG

Re: Questions about the Equivalence Principle (EP) and GR

On Saturday, March 23, 2019 at 2:19:39 PM UTC-6, Brent wrote: > > > > On 3/23/2019 5:45 AM, agrays...@gmail.com wrote: > > > > On Thursday, March 21, 2019 at 12:40:13 AM UTC-6, smitra wrote: >> >> On 21-03-2019 06:21, agrays...@gmail.com wrote: >> > On Wednesday, March 20, 2019 at 12:51:18 PM

Re: Questions about the Equivalence Principle (EP) and GR

On 3/23/2019 5:45 AM, agrayson2...@gmail.com wrote: On Thursday, March 21, 2019 at 12:40:13 AM UTC-6, smitra wrote: On 21-03-2019 06:21, agrays...@gmail.com wrote: > On Wednesday, March 20, 2019 at 12:51:18 PM UTC-6, Brent wrote: > >> On 3/20/2019 3:07 AM,

Re: Questions about the Equivalence Principle (EP) and GR

On Wednesday, March 20, 2019 at 10:08:53 AM UTC-6, John Clark wrote: > > On Wed, Mar 20, 2019 at 9:16 AM > wrote: > > * > how does GR establish the Principle of Relativity (for accelerating >> frames)? AG * >> > > It doesn't, Einstein never said everything is relative. Unlike velocity > there

Re: Questions about the Equivalence Principle (EP) and GR

On Thursday, March 21, 2019 at 12:40:13 AM UTC-6, smitra wrote: > > On 21-03-2019 06:21, agrays...@gmail.com wrote: > > On Wednesday, March 20, 2019 at 12:51:18 PM UTC-6, Brent wrote: > > > >> On 3/20/2019 3:07 AM, agrays...@gmail.com wrote: > >> > >> On Tuesday, March 19, 2019 at 7:23:29

Re: Questions about the Equivalence Principle (EP) and GR

On 21-03-2019 06:21, agrayson2...@gmail.com wrote: On Wednesday, March 20, 2019 at 12:51:18 PM UTC-6, Brent wrote: On 3/20/2019 3:07 AM, agrays...@gmail.com wrote: On Tuesday, March 19, 2019 at 7:23:29 PM UTC-6, Brent wrote: On 3/19/2019 9:32 AM, John Clark wrote: On Tue, Mar 19, 2019 at

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