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Groups > sci.physics.relativity > #460876
| From | Sylvia Else <sylvia@not.at.this.address> |
|---|---|
| Newsgroups | sci.physics.relativity |
| Subject | Re: To see instantaneously from the moon on Earth |
| Date | 2018-06-11 11:30 +1000 |
| Message-ID | <fo61lbFbl30U1@mid.individual.net> (permalink) |
| References | <72bf20e7-68f9-4d7c-9bd5-6a57b1d83751@googlegroups.com> <d52ab1fc-d484-469c-8703-b99759c531ea@googlegroups.com> <9b65c7c9-6669-4098-925a-58ffd5292391@googlegroups.com> |
On 3/06/2018 9:26 AM, John Gogo wrote: > On Wednesday, May 30, 2018 at 8:35:56 AM UTC-5, Edward Prochak wrote: >> On Tuesday, May 29, 2018 at 9:49:20 PM UTC-4, John Gogo wrote: >>> The LED light source on the moon would have to be the size >>> of a very large football field- even with our most powerful telescopes! >> >> What makes you think the communication will be "instantaneous"? >> >> The moon is roughly 380,000 km from the surface of the earth. >> So light traveling from the moon to the earth will take >> (380,000,000 m) / (300,000,000 m/sec) = ~1.27 sec >> to arrive at earth. >> >> Hardly instantaneous. >> >> Enjoy, >> ed > > You automatically believe that c in all forms of electromagnetic radiation, of which LIGHT is merely one identifiable description, travels at 300,000 m/s. This is what I have been trying to say- that light per se that we see of the object seen is instantaneous and does not require signaling devices which say that c always is restricted by its speed; hence, its distance. > It is abundantly clear that our eyes respond to light in the visible part of the spectrum (it's almost a tautology). We even know the chemistry involved. Provide light in a previously dark room, and suddenly you can see. Stop providing it, and you cannot. Experiments with visible light clearly show that it does not propagate instantaneously. What possible line of reasoning could lead you to believe that seeing is instantaneous? Sylvia.
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Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-06-02 16:26 -0700
Re: To see instantaneously from the moon on Earth Python <python@python.invalid> - 2018-06-03 01:49 +0200
Re: To see instantaneously from the moon on Earth Edward Prochak <edprochak@gmail.com> - 2018-06-04 09:45 -0700
Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-06-04 19:19 -0700
Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-06-07 18:29 -0700
Re: To see instantaneously from the moon on Earth Sylvia Else <sylvia@not.at.this.address> - 2018-06-11 11:30 +1000
Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-06-11 17:14 -0700
Re: To see instantaneously from the moon on Earth Sylvia Else <sylvia@not.at.this.address> - 2018-06-12 14:33 +1000
Re: To see instantaneously from the moon on Earth Tom Roberts <tjroberts137@sbcglobal.net> - 2018-06-11 23:59 -0500
Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-06-12 18:39 -0700
Re: To see instantaneously from the moon on Earth Sylvia Else <sylvia@not.at.this.address> - 2018-06-13 13:16 +1000
Re: To see instantaneously from the moon on Earth Sylvia Else <sylvia@not.at.this.address> - 2018-06-13 14:48 +1000
Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-06-13 18:59 -0700
Re: To see instantaneously from the moon on Earth Gary Harnagel <hitlong@yahoo.com> - 2018-06-13 19:19 -0700
Re: To see instantaneously from the moon on Earth Sylvia Else <sylvia@not.at.this.address> - 2018-06-14 13:13 +1000
Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-06-14 18:55 -0700
Re: To see instantaneously from the moon on Earth Sylvia Else <sylvia@not.at.this.address> - 2018-06-16 09:14 +1000
Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-06-15 19:05 -0700
Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-06-15 19:24 -0700
Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-06-15 19:39 -0700
Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-06-16 20:11 -0700
Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-06-16 20:31 -0700
Re: To see instantaneously from the moon on Earth Sylvia Else <sylvia@not.at.this.address> - 2018-06-17 14:42 +1000
Re: To see instantaneously from the moon on Earth Edward Prochak <edprochak@gmail.com> - 2018-06-17 18:23 -0700
Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-06-18 17:39 -0700
Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-06-18 19:09 -0700
Re: To see instantaneously from the moon on Earth Edward Prochak <edprochak@gmail.com> - 2018-06-19 09:55 -0700
Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-06-20 15:46 -0700
Re: To see instantaneously from the moon on Earth Edward Prochak <edprochak@gmail.com> - 2018-06-21 10:10 -0700
Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-06-25 19:14 -0700
Re: To see instantaneously from the moon on Earth mitchrae3323@gmail.com - 2018-06-25 19:23 -0700
Re: To see instantaneously from the moon on Earth pnalsing@gmail.com - 2018-06-25 22:38 -0700
Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-06-30 21:02 -0700
Re: To see instantaneously from the moon on Earth pnalsing@gmail.com - 2018-06-30 21:28 -0700
Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-06-30 22:02 -0700
Re: To see instantaneously from the moon on Earth pnalsing@gmail.com - 2018-07-01 17:04 -0700
Re: To see instantaneously from the moon on Earth Edward Prochak <edprochak@gmail.com> - 2018-07-01 18:34 -0700
Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-07-01 19:43 -0700
Re: To see instantaneously from the moon on Earth Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-07-01 12:20 +0200
Re: To see instantaneously from the moon on Earth pnalsing@gmail.com - 2018-07-01 17:04 -0700
Re: To see instantaneously from the moon on Earth Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-07-02 03:55 +0200
Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-07-01 19:39 -0700
Re: To see instantaneously from the moon on Earth Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-07-02 04:42 +0200
Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-07-01 19:51 -0700
Re: To see instantaneously from the moon on Earth Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-07-02 05:04 +0200
Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-07-01 20:58 -0700
Re: To see instantaneously from the moon on Earth pnalsing@gmail.com - 2018-07-01 20:26 -0700
Re: To see instantaneously from the moon on Earth Tom Roberts <tjroberts137@sbcglobal.net> - 2018-06-12 22:18 -0500
Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-06-13 19:23 -0700
Re: To see instantaneously from the moon on Earth Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-07-02 04:37 +0200
Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-06-16 20:20 -0700
Re: To see instantaneously from the moon on Earth Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-07-02 04:40 +0200
Re: To see instantaneously from the moon on Earth Steve BH <sbharris@gmail.com> - 2018-06-18 08:35 -0700
Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-06-18 17:33 -0700
Re: To see instantaneously from the moon on Earth Steve BH <sbharris@gmail.com> - 2018-06-19 10:26 -0700
Re: To see instantaneously from the moon on Earth Zprávn Udoucih <zpnvn@nwinst.ce> - 2018-06-19 17:32 +0000
Re: To see instantaneously from the moon on Earth John Gogo <jfgogo22@yahoo.com> - 2018-06-20 16:12 -0700
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