Groups > sci.physics.relativity > #461214

Re: To see instantaneously from the moon on Earth

From	Sylvia Else <sylvia@not.at.this.address>
Newsgroups	sci.physics.relativity
Subject	Re: To see instantaneously from the moon on Earth
Date	2018-06-14 13:13 +1000
Message-ID	<foe4qpFs17vU1@mid.individual.net> (permalink)
References	(5 earlier) <sIydnR2XEcKhzoLGnZ2dnUU7_8zNnZ2d@giganews.com> <cb611c44-51bf-4925-9730-f073cb4b37c8@googlegroups.com> <fobgkbFcq2iU1@mid.individual.net> <fobm05FdmipU1@mid.individual.net> <c7046909-3fa2-4408-b56f-e454745bf9f0@googlegroups.com>

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On 14/06/2018 11:59 AM, John Gogo wrote:
> On Tuesday, June 12, 2018 at 11:48:08 PM UTC-5, Sylvia Else wrote:
>> On 13/06/2018 1:16 PM, Sylvia Else wrote:
>>> On 13/06/2018 11:39 AM, John Gogo wrote:
>>>> On Monday, June 11, 2018 at 11:59:46 PM UTC-5, tjrob137 wrote:
>>>>> On 6/11/18 7:14 PM, John Gogo wrote:
>>>>>> Tom Roberts said that we now can produce a telescope which can see
>>>>>> the detail of the moon's surface within a few inches.
>>>>>
>>>>> I did NOT say that at all, and it is far from true. A telescope able to
>>>>> see an LED on the moon is NOT AT ALL able to "see the detail of the
>>>>> moon's surface within a few inches".
>>>>>
>>>>>      Do you understand that light-gathering power is not at all
>>>>>      the same as angular resolution? Do you even know what
>>>>>      these terms mean?
>>>>>
>>>>> Why do you just make stuff up and pretend it is true? What's the point?
>>>>> Lying about what somebody else said is downright unfriendly. And STUPID.
>>>>>
>>>>> Tom Roberts
>>>>
>>>> Tom, you also said that an ordinary LED a few millimeters in diameter,
>>>> pointed in the direction of the Keck telescope, would be significantly
>>>> brighter there than a candle. You also said it would require solar
>>>> darkness. C'mon Tom throw me a bone. Can or cannot we build a
>>>> telescope powerful and special enough to literally SEE the rovers,
>>>> mirrors, flags, and the like to be observed by any human here on Earth?
>>>>
>>>
>>>
>>> No, we cannot. It would have to be bigger than the Earth itself.
>>>
>>> Sylvia.
>>
>> Oops - lost a factor of a 1000.
>>
>> Still, an optical telescope 19km across is hardly practical.
>>
>> Sylvia.
> 
> We are so limited and short-sighted aren't we? No wonder we are not ready for instant light.
> 

Not sure what you mean by that. The required size arises from a 
fundamental aspect of optics, or, equivalently, quantum mechanics. No 
smaller telescope can have sufficient resolution.

If someone contrived to pay for and build a functional optical telescope 
that big, it would not be for the purpose of convincing moon-landing 
deniers.

Sylvia.

Thread

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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