Re: The Equivalence Principle (EP)

On Sunday, March 16, 2025 at 6:28:31 PM UTC-6 Brent Meeker wrote: That was his inspiration, but it doesn't mean he couldn't later also look at it as a force. Why worry about what it's called or what Einstein thought about it. Einstein is certainly not the last word on general relativity. H

Re: The Equivalence Principle (EP)

That was his inspiration, but it doesn't mean he couldn't later also look at it as a force.  Why worry about what it's called or what Einstein thought about it.  Einstein is certainly not the last word on general relativity.  He thought black holes couldn't form, much less radiate. Brent On

Re: The Equivalence Principle (EP)

On Friday, March 14, 2025 at 11:41:45 PM UTC-6 Alan Grayson wrote: On Friday, March 14, 2025 at 11:03:37 PM UTC-6 Brent Meeker wrote: Except he didn't show any such thing and he generally did regard it as a force, although he saw merit in Minkowski's geometric interpretation. Brent Poor cho

Re: The Equivalence Principle (EP)

Maybe the EP just showed Einstein that graity is not a force, so it must be modeled differently, possibly by geometry? AG On Wednesday, March 12, 2025 at 3:37:55 PM UTC-6 Alan Grayson wrote: > As precisely as possible, can anyone describe the function and value of > the EP in the construction o

Re: The Equivalence Principle (EP)

On Friday, March 14, 2025 at 9:23:39 AM UTC-6 Cosmin Visan wrote: Of course gravity is not a force. And neither the chair in front of you is not a chair. They are all ideas in consciousness. If you were really conscious, you'd realize that your comment is worthless. You could just as well sa

Re: The Equivalence Principle (EP)

On Friday, March 14, 2025 at 11:41:45 PM UTC-6 Alan Grayson wrote: On Friday, March 14, 2025 at 11:03:37 PM UTC-6 Brent Meeker wrote: Except he didn't show any such thing and he generally did regard it as a force, although he saw merit in Minkowski's geometric interpretation. Brent Poor cho

Re: The Equivalence Principle (EP)

On Friday, March 14, 2025 at 11:03:37 PM UTC-6 Brent Meeker wrote: Except he didn't show any such thing and he generally did regard it as a force, although he saw merit in Minkowski's geometric interpretation. Brent Poor choice of a word on my part; he didn't "show" gravity wasn't a force;

Re: The Equivalence Principle (EP)

Except he didn't show any such thing and he generally did regard it as a force, although he saw merit in Minkowski's geometric interpretation. Brent On 3/14/2025 2:59 AM, Alan Grayson wrote: Maybe the EP just showed Einstein that graity is not a force, so it must be modeled differently, possib

Re: The Equivalence Principle (EP)

On Friday, March 14, 2025 at 8:31:55 AM UTC-6 Alan Grayson wrote: On Friday, March 14, 2025 at 6:46:05 AM UTC-6 Alan Grayson wrote: On Friday, March 14, 2025 at 3:59:42 AM UTC-6 Alan Grayson wrote: Maybe the EP just showed Einstein that graity is not a force, so it must be modeled differently

Re: The Equivalence Principle (EP)

Of course gravity is not a force. And neither the chair in front of you is not a chair. They are all ideas in consciousness. On Friday, 14 March 2025 at 16:31:55 UTC+2 Alan Grayson wrote: > On Friday, March 14, 2025 at 6:46:05 AM UTC-6 Alan Grayson wrote: > > On Friday, March 14, 2025 at 3:59:42

Re: The Equivalence Principle (EP)

On Friday, March 14, 2025 at 6:46:05 AM UTC-6 Alan Grayson wrote: On Friday, March 14, 2025 at 3:59:42 AM UTC-6 Alan Grayson wrote: Maybe the EP just showed Einstein that graity is not a force, so it must be modeled differently, possibly by geometry? AG No. The EP just shows that gravity is

Re: The Equivalence Principle (EP)

On Friday, March 14, 2025 at 3:59:42 AM UTC-6 Alan Grayson wrote: Maybe the EP just showed Einstein that graity is not a force, so it must be modeled differently, possibly by geometry? AG No. The EP just shows that gravity is equivalent to acceleration ignoring tidal forces, but the fact tha

The Equivalence Principle (EP)

As precisely as possible, can anyone describe the function and value of the EP in the construction of GR? Alternatively, how are the field equations implied by the EP? TY, AG -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe fr

Re: Einstein's Field Equation (EFE) and the Equivalence Principle (EP)

On Thu, Nov 7, 2024 at 6:05 AM Alan Grayson wrote: * > **SR can be adapted to accelerating reference frames.* *That is true UNLESS the acceleration is caused by a gravitational field. If you place an object next to a large concentration of mass Special Relativity can't explain or predict what t

Re: Einstein's Field Equation (EFE) and the Equivalence Principle (EP)

On 11/6/2024 11:10 PM, Alan Grayson wrote: On Monday, October 7, 2024 at 12:33:58 AM UTC-6 Alan Grayson wrote: On Sunday, October 6, 2024 at 2:27:40 PM UTC-6 John Clark wrote: On Sun, Oct 6, 2024 at 11:46 AM Alan Grayson wrote: /> The problem I am identify

Re: Einstein's Field Equation (EFE) and the Equivalence Principle (EP)

On Thursday, November 7, 2024 at 12:10:02 AM UTC-7 Alan Grayson wrote: On Monday, October 7, 2024 at 12:33:58 AM UTC-6 Alan Grayson wrote: On Sunday, October 6, 2024 at 2:27:40 PM UTC-6 John Clark wrote: On Sun, Oct 6, 2024 at 11:46 AM Alan Grayson wrote: *> The problem I am identifying here

Re: Einstein's Field Equation (EFE) and the Equivalence Principle (EP)

On Monday, October 7, 2024 at 12:33:58 AM UTC-6 Alan Grayson wrote: On Sunday, October 6, 2024 at 2:27:40 PM UTC-6 John Clark wrote: On Sun, Oct 6, 2024 at 11:46 AM Alan Grayson wrote: *> The problem I am identifying here, and likely best resolved by an historian of physics, is that the prin

Re: Einstein's Field Equation (EFE) and the Equivalence Principle (EP)

On Monday, October 7, 2024 at 12:33:58 AM UTC-6 Alan Grayson wrote: On Sunday, October 6, 2024 at 2:27:40 PM UTC-6 John Clark wrote: On Sun, Oct 6, 2024 at 11:46 AM Alan Grayson wrote: *> The problem I am identifying here, and likely best resolved by an historian of physics, is that the prin

Re: Einstein's Field Equation (EFE) and the Equivalence Principle (EP)

On Sunday, October 6, 2024 at 2:27:40 PM UTC-6 John Clark wrote: On Sun, Oct 6, 2024 at 11:46 AM Alan Grayson wrote: *> The problem I am identifying here, and likely best resolved by an historian of physics, is that the principles allegedly guiding Einstein to develop GR. namely that gravity

Re: Einstein's Field Equation (EFE) and the Equivalence Principle (EP)

On Sun, Oct 6, 2024 at 11:46 AM Alan Grayson wrote: *> The problem I am identifying here, and likely best resolved by an > historian of physics, is that the principles allegedly guiding Einstein to > develop GR. namely that gravity and acceleration are equivalent if tidal > forces are ignored, an

Re: Einstein's Field Equation (EFE) and the Equivalence Principle (EP)

On Saturday, October 5, 2024 at 6:07:05 PM UTC-6 Alan Grayson wrote: Presumably, we all know how the EP is demonstrated in an accelerating elevator, and the story of Einstein's thought experiment about a person in free fall who doesn't experience any gravitational force. But how can we trace

Einstein's Field Equation (EFE) and the Equivalence Principle (EP)

Presumably, we all know how the EP is demonstrated in an accelerating elevator, and the story of Einstein's thought experiment about a person in free fall who doesn't experience any gravitational force. But how can we trace these conclusions to EFE? If they're really guiding principles to GR, h

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 e

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 at

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, agrays...@gmail.com

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 24

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 8:

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 w

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 Susski

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 functi

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 wr

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, Apr

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 Apr

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, April

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 Thurs

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 rememb

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

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 j

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 help

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) https://www.youtube.com/watch?v=foRPKA

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 A

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 wro

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 don

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: >>> >>> S

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 establishe

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 Ei

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 insisted

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 at

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 exper

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 intende

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 same

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 techn

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 determ

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 w

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, agrays...@gmail.c

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, agrays...@gmail.com

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 6:3

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, 2019

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: >>> >>> >>> >>> O

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 9:26:5

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: >>> >>> >>> >>> O

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 wro

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, 201

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 5:48:23

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: >>> >>> >>> >>> On

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 5:48:2

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, 2019

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 4

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 4

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, 201

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 4

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 4

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 t

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 diagon

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 z

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 he

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 P

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 wrote:

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 P

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 wrote

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 12:05:11

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 wrot

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? AG??

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 l

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