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

2019-05-09 Thread Alan Grayson
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 e

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

2019-04-24 Thread Philip Thrift
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 at

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

2019-04-24 Thread Philip Thrift
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, agrays...@gmail.com

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

2019-04-24 Thread 'Brent Meeker' via Everything List
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 24

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

2019-04-24 Thread agrayson2000
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

2019-04-24 Thread 'Brent Meeker' via Everything List
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

2019-04-24 Thread agrayson2000
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 8:

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

2019-04-24 Thread 'Brent Meeker' via Everything List
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 w

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

2019-04-24 Thread agrayson2000
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

2019-04-24 Thread agrayson2000
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 Susski

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

2019-04-24 Thread 'Brent Meeker' via Everything List
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 functi

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

2019-04-24 Thread agrayson2000
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 wr

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

2019-04-24 Thread agrayson2000
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, Apr

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

2019-04-24 Thread Bruno Marchal
> 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 Apr

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

2019-04-23 Thread agrayson2000
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, April

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

2019-04-23 Thread Bruno Marchal
> 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 Thurs

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

2019-04-23 Thread Bruno Marchal
> 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 rememb

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

2019-04-21 Thread Philip Thrift
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

2019-04-21 Thread agrayson2000
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

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

2019-04-21 Thread 'Brent Meeker' via Everything List
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 j

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

2019-04-21 Thread agrayson2000
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

2019-04-21 Thread agrayson2000
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 help

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

2019-04-21 Thread 'Brent Meeker' via Everything List
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) https://www.youtube.com/watch?v=foRPKA

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

2019-04-21 Thread Philip Thrift
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 A

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

2019-04-21 Thread agrayson2000
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 wro

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

2019-04-21 Thread agrayson2000
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 don

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

2019-04-20 Thread Philip Thrift
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: >>> >>> S

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

2019-04-20 Thread 'Brent Meeker' via Everything List
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 establishe

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

2019-04-20 Thread agrayson2000
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 Ei

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

2019-04-19 Thread Bruno Marchal
> 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 insisted

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

2019-04-18 Thread Russell Standish
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 at

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

2019-04-18 Thread 'Brent Meeker' via Everything List
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 exper

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

2019-04-18 Thread agrayson2000
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 intende

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

2019-04-18 Thread 'Brent Meeker' via Everything List
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

2019-04-18 Thread agrayson2000
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

2019-04-18 Thread agrayson2000
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 same

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

2019-04-18 Thread 'Brent Meeker' via Everything List
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 techn

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

2019-04-18 Thread agrayson2000
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 determ

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

2019-04-18 Thread Bruno Marchal
> 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 w

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

2019-04-17 Thread agrayson2000
*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

2019-04-17 Thread 'Brent Meeker' via Everything List
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, agrays...@gmail.c

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

2019-04-17 Thread agrayson2000
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

2019-04-17 Thread 'Brent Meeker' via Everything List
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, agrays...@gmail.com

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

2019-04-17 Thread agrayson2000
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 6:3

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

2019-04-17 Thread 'Brent Meeker' via Everything List
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, 2019

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

2019-04-17 Thread agrayson2000
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: >>> >>> >>> >>> O

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

2019-04-16 Thread agrayson2000
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 9:26:5

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

2019-04-16 Thread agrayson2000
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: >>> >>> >>> >>> O

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

2019-04-16 Thread 'Brent Meeker' via Everything List
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 wro

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

2019-04-16 Thread 'Brent Meeker' via Everything List
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, 201

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

2019-04-16 Thread agrayson2000
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 5:48:23

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

2019-04-16 Thread agrayson2000
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: >>> >>> >>> >>> On

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

2019-04-16 Thread agrayson2000
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 5:48:2

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

2019-04-16 Thread 'Brent Meeker' via Everything List
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, 2019

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

2019-04-16 Thread 'Brent Meeker' via Everything List
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

2019-04-16 Thread agrayson2000
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 4

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

2019-04-16 Thread agrayson2000
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 4

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

2019-04-15 Thread 'Brent Meeker' via Everything List
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

2019-04-15 Thread 'Brent Meeker' via Everything List
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, 201

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

2019-04-15 Thread agrayson2000
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

2019-04-15 Thread agrayson2000
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

2019-04-12 Thread agrayson2000
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 4

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

2019-04-12 Thread Philip Thrift
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 4

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

2019-04-11 Thread 'Brent Meeker' via Everything List
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

2019-04-11 Thread agrayson2000
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 t

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

2019-04-11 Thread 'Brent Meeker' via Everything List
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 diagon

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

2019-04-11 Thread agrayson2000
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 z

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

2019-04-11 Thread 'Brent Meeker' via Everything List
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 he

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

2019-04-11 Thread agrayson2000
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 P

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

2019-04-09 Thread 'Brent Meeker' via Everything List
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 wrote:

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

2019-04-09 Thread agrayson2000
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 P

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

2019-04-09 Thread 'Brent Meeker' via Everything List
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 wrote

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

2019-04-09 Thread agrayson2000
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 12:05:11

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

2019-04-09 Thread 'Brent Meeker' via Everything List
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 wrot

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

2019-04-09 Thread agrayson2000
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

2019-04-09 Thread 'Brent Meeker' via Everything List
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

2019-04-09 Thread agrayson2000
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? AG??

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

2019-04-09 Thread 'Brent Meeker' via Everything List
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 l

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

2019-04-09 Thread agrayson2000
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 syst

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

2019-04-08 Thread agrayson2000
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 everything-list+unsubsc

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

2019-03-27 Thread 'Brent Meeker' via Everything List
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* arX

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

2019-03-27 Thread agrayson2000
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

2019-03-27 Thread agrayson2000
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

2019-03-26 Thread 'Brent Meeker' via Everything List
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 th

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

2019-03-26 Thread 'Brent Meeker' via Everything List
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 absolute

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

2019-03-26 Thread smitra
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 ch

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

2019-03-26 Thread agrayson2000
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 examp

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

2019-03-26 Thread John Clark
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

2019-03-26 Thread agrayson2000
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

2019-03-26 Thread agrayson2000
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. Phy

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

2019-03-26 Thread John Clark
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

2019-03-26 Thread John Clark
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 determ

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

2019-03-26 Thread agrayson2000
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 resolve

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

2019-03-26 Thread John Clark
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 f

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

2019-03-26 Thread agrayson2000
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

2019-03-24 Thread agrayson2000
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

2019-03-23 Thread 'Brent Meeker' via Everything List
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, agrays...@gmail.co

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

2019-03-23 Thread agrayson2000
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 i

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

2019-03-23 Thread agrayson2000
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 P

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

2019-03-20 Thread smitra
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 4:5

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