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Re: MIT Lunar reflector experiment

From moroney@world.std.spaamtrap.com (Michael Moroney)
Newsgroups sci.physics.relativity
Subject Re: MIT Lunar reflector experiment
Date 2016-09-10 14:48 +0000
Organization The World : www.TheWorld.com : Since 1989
Message-ID <nr16go$u0c$3@pcls7.std.com> (permalink)
References <9e656124-6c1f-4c64-a5e1-e08c53e579c2@googlegroups.com> <ff4934a3-0a13-4a9e-8020-18a749a9447b@googlegroups.com>

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numbernumber1964@gmail.com writes:


>>Another nocturnal dreamer. A single photon (per second) is not going to
>>set off the photomultiplier.


>Sure it can.  With the old kind of photomultiplier, the photoelectric
>effect means one photon produces one electron.  The "multiplier" part of
>the photomultiplier means that the electron cascades into a pulse of
>electrons over several steps. Michael Moroney


>_________________________________________________________


>Are you being seriously stupid or What! A photomultiplier is based on the
>photoelectric effect which is reliant on a threshold intensity which is 
>the reason solar cell do not function at night unless of course you are 
stupid or having another nocturnal dream.

Wrong.  Read Einstein's work on the photoelectric effect.  He explicitly
disproved of your threshold idea.  A single photon (of sufficient energy) 
produces exactly one electron.  The multiplier effect is that there is
a positively charged plate in the photomultiplier tube where that 
electron, being accelerated, slams into a different type of substance
which releases more electrons.  There may be further stages of this.
But the net result is a pulse of current (electrons) from a single
photon.

As to solar cells, I don't know the physics behind them, but I suspect
that at the fundamental level it is still one photon == one electron
of current.  It may be that there are internal losses such that all
current below a point gets lost internally.  Or maybe not, solar cells
do work via starlight but produce so little current it is not at all
useful.

I also don't know the physics of a CCD device in the Hubble imager.

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MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-08 22:25 -0700
  Re: MIT Lunar reflector experiment moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-09-09 13:53 +0000
    Re: MIT Lunar reflector experiment dlzc <dlzc1@cox.net> - 2016-09-09 10:03 -0700
      Re: MIT Lunar reflector experiment jaymoseley@hotmail.com - 2016-09-09 10:31 -0700
        Re: MIT Lunar reflector experiment dlzc <dlzc1@cox.net> - 2016-09-09 11:43 -0700
          Re: MIT Lunar reflector experiment Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-09-09 12:06 -0700
        Re: MIT Lunar reflector experiment "Paul B. Andersen" <relativity@paulba.no> - 2016-09-10 11:46 +0200
          Re: MIT Lunar reflector experiment jaymoseley@hotmail.com - 2016-09-10 06:53 -0700
            Re: MIT Lunar reflector experiment "Paul B. Andersen" <relativity@paulba.no> - 2016-09-11 09:03 +0200
              Re: MIT Lunar reflector experiment jaymoseley@hotmail.com - 2016-09-11 05:57 -0700
                Re: MIT Lunar reflector experiment Tom Roberts <tjroberts137@sbcglobal.net> - 2016-09-11 10:04 -0500
                Re: MIT Lunar reflector experiment jaymoseley@hotmail.com - 2016-09-11 10:32 -0700
                Re: MIT Lunar reflector experiment Tom Roberts <tjroberts137@sbcglobal.net> - 2016-09-12 11:52 -0500
                Re: MIT Lunar reflector experiment jaymoseley@hotmail.com - 2016-09-13 01:23 -0700
                Re: MIT Lunar reflector experiment Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-09-13 04:51 -0700
                Re: MIT Lunar reflector experiment jaymoseley@hotmail.com - 2016-09-13 10:39 -0700
                Re: MIT Lunar reflector experiment Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-09-13 16:10 -0700
                Re: MIT Lunar reflector experiment jaymoseley@hotmail.com - 2016-09-14 06:05 -0700
                Re: MIT Lunar reflector experiment Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-09-14 06:22 -0700
                Re: MIT Lunar reflector experiment jaymoseley@hotmail.com - 2016-09-15 00:14 -0700
                Re: MIT Lunar reflector experiment Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-09-15 02:52 -0700
                Re: MIT Lunar reflector experiment jaymoseley@hotmail.com - 2016-09-15 05:48 -0700
                Re: MIT Lunar reflector experiment Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-09-15 06:29 -0700
                Re: MIT Lunar reflector experiment jaymoseley@hotmail.com - 2016-09-15 13:42 -0700
                Re: MIT Lunar reflector experiment Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-09-15 14:57 -0700
                Re: MIT Lunar reflector experiment jaymoseley@hotmail.com - 2016-09-16 10:34 -0700
                Re: MIT Lunar reflector experiment Odd Bodkin <bodkinodd@gmail.com> - 2016-09-16 14:53 -0500
                Re: MIT Lunar reflector experiment jaymoseley@hotmail.com - 2016-09-17 02:21 -0700
                Re: MIT Lunar reflector experiment Tom Roberts <tjroberts137@sbcglobal.net> - 2016-09-17 10:37 -0500
                Re: MIT Lunar reflector experiment Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-09-17 10:21 -0700
                Re: MIT Lunar reflector experiment jaymoseley@hotmail.com - 2016-09-17 15:36 -0700
                Re: MIT Lunar reflector experiment Odd Bodkin <bodkinodd@gmail.com> - 2016-09-19 09:37 -0500
                Re: MIT Lunar reflector experiment Tom Roberts <tjroberts137@sbcglobal.net> - 2016-09-21 23:18 -0500
                Re: MIT Lunar reflector experiment dsr@mail.lns.cornell.edu (Daniel S. Riley) - 2016-09-25 16:01 -0400
                Re: MIT Lunar reflector experiment jaymoseley@hotmail.com - 2016-09-17 15:47 -0700
                What does "classical" mean? Tom Roberts <tjroberts137@sbcglobal.net> - 2016-09-16 22:35 -0500
                Re: What does "classical" mean? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-09-17 05:13 +0000
                Re: What does "classical" mean? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-09-17 08:31 +0000
                Re: MIT Lunar reflector experiment Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-09-15 03:04 -0700
      Re: MIT Lunar reflector experiment moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-09-10 02:33 +0000
      Re: MIT Lunar reflector experiment Sylvia Else <sylvia@not.at.this.address> - 2016-09-11 22:32 +1000
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-09 16:36 -0700
    Re: MIT Lunar reflector experiment Tom Roberts <tjroberts137@sbcglobal.net> - 2016-09-09 20:20 -0500
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-09 16:37 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-09 16:40 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-09 16:43 -0700
    Re: MIT Lunar reflector experiment moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-09-10 02:38 +0000
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-09 19:46 -0700
    Re: MIT Lunar reflector experiment Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-09-10 03:41 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-09 19:52 -0700
    Re: MIT Lunar reflector experiment moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-09-10 14:48 +0000
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-10 14:35 -0700
    Re: MIT Lunar reflector experiment Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-09-10 20:48 -0700
    Re: MIT Lunar reflector experiment Tom Roberts <tjroberts137@sbcglobal.net> - 2016-09-12 11:55 -0500
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-10 14:38 -0700
    Re: MIT Lunar reflector experiment Gary Harnagel <hitlong@yahoo.com> - 2016-09-10 16:43 -0700
    Re: MIT Lunar reflector experiment moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-09-11 00:05 +0000
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-10 17:41 -0700
    Re: MIT Lunar reflector experiment Gary Harnagel <hitlong@yahoo.com> - 2016-09-10 19:08 -0700
    Re: MIT Lunar reflector experiment Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-09-10 20:56 -0700
    Re: MIT Lunar reflector experiment moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-09-11 04:35 +0000
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-10 17:58 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-11 13:24 -0700
    Re: MIT Lunar reflector experiment Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-09-11 13:54 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-11 15:21 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-11 15:21 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-14 11:35 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-14 16:56 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-15 14:38 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-15 15:18 -0700
    Re: MIT Lunar reflector experiment moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-09-16 16:34 +0000
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-16 17:50 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-17 11:51 -0700
    Re: MIT Lunar reflector experiment moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-09-18 02:50 +0000
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-17 16:22 -0700
    Re: MIT Lunar reflector experiment Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-09-17 21:22 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-18 12:26 -0700
    Re: MIT Lunar reflector experiment Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-09-18 12:40 -0700
    Re: MIT Lunar reflector experiment moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-09-19 00:53 +0000
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-18 12:41 -0700
    Re: MIT Lunar reflector experiment moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-09-19 01:02 +0000
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-18 19:33 -0700
    Re: MIT Lunar reflector experiment moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-09-19 14:21 +0000
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-19 15:18 -0700
    Re: MIT Lunar reflector experiment moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-09-20 02:53 +0000
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-20 09:15 -0700
    Re: MIT Lunar reflector experiment Gary Harnagel <hitlong@yahoo.com> - 2016-09-20 12:24 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-20 13:08 -0700
    Re: MIT Lunar reflector experiment moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-09-20 21:36 +0000
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-20 14:17 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-20 15:22 -0700
    Re: MIT Lunar reflector experiment Gary Harnagel <hitlong@yahoo.com> - 2016-09-21 14:57 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-21 11:35 -0700
  Re: MIT Lunar reflector experiment akashaheights@gmail.com - 2016-09-22 12:27 -0700
  Re: MIT Lunar reflector experiment akashaheights@gmail.com - 2016-09-22 12:33 -0700
  Re: MIT Lunar reflector experiment akashaheights@gmail.com - 2016-09-22 12:34 -0700
  Re: MIT Lunar reflector experiment akashaheights@gmail.com - 2016-09-22 12:36 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-23 14:18 -0700
    Re: MIT Lunar reflector experiment moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-09-24 15:24 +0000
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-23 14:22 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-24 12:06 -0700
    Re: MIT Lunar reflector experiment moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-09-25 01:19 +0000
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-26 11:13 -0700
    Re: MIT Lunar reflector experiment Gary Harnagel <hitlong@yahoo.com> - 2016-09-26 19:04 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-26 15:48 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-27 10:07 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-09-28 12:15 -0700
  Re: MIT Lunar reflector experiment Jan2 - 2016-09-30 11:20 +0200
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-10-01 14:13 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-10-01 14:51 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-10-03 16:00 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-10-07 11:05 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-10-08 15:21 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-10-08 16:03 -0700
  Re: MIT Lunar reflector experiment numbernumber1964@gmail.com - 2016-10-09 11:41 -0700

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