Geoff,
I have to strongly disagree with you.This following is a bit off the 
normal PSN discussion, but of such concern to me, that I feel I have to 
respond.
I love studying first principles of technology -- such as the problem of 
restoring technology from scratch on a desert isle.That having been 
said, today there are numerous groups doing fantastic things at an 
amateur level.Take your own example of the electron microscope.There are 
some amateurs that have made just that -- electron microscopes.Below are 
just a few additional projects that illustrate all the wealth of amateur 
exploration of technology:
1) Quality lathes that can be replicated in 3rd world countries from 
scrap and concrete.See multimachine@...............
2) Farnsworth fusion reactors
3) 3-D printers
4) CNC machines of various complexities and accuracies.
5) Radio amateurs doing earth/moon (moon bounce) radio communication and 
satellite communication through their own designed and constructed 
satellites. Others are doing laser communication over multi-kilometer 
distances
6) Seismographs of professional level sensitivity including those of 
Randall Peters that started this particular discussion.PSN has acted as 
a wonderful focus point for all sorts of projects centered around the 
problem of sensing internal earth's motions.
All of the above replicate at an amateur level things that didn't exist 
100 years ago.And then there's the problem -- what exactly is an 
amateur?It would seem your definition is he/she is incompetent.I would 
argue that an amateur is just someone who doesn't make his living in the 
area that he is exploring/playing with and even that is begging the 
question a bit.What about the person who just loves his job so much that 
he goes home and does more of it? The incredible analog electronics 
designer, Jim Williams fit this definition to a tee.Obviously the 
examples above are accomplished by very competent people -- but they're 
doing it for the fun of it with perhaps a serious end goal in mind.The 
first example of the multimachine has a serious end goal.Many of the 
amateur seismologists enjoy their "hobby", but some surely hope that the 
science progresses and leads to better instruments and understanding of 
the earth around them.Again, a serious end goal is the Dave Nelson/Angel 
collaboration on vertical instruments of "professional" quality.
Who knows when a hobby idea fertilizes a solution to a problem at work 
that leads to a change that raises the level of understanding.Einstein 
wasn't working as a physicist, but rather as a patent examiner, when he 
came up with the theory of relativity and his Nobel prize winning paper 
on photoelectricity.So by definition he was a amateur.Amateurs can 
change the world.
I'll be the first to admit that the amateur construction of many of the 
examples above is facilitated by the runoff of ideas and technology as 
the lake of high technologyrises around us.But, making use of discarded 
equipment and new ideas isn't stupid -- look at it as being "Green"!And 
in my mind, the Gutenberg press invention of the modern world is the 
World Wide Web, whereby we all can collaborate on wondrous technology in 
our own ways.So sticking to coils and magnets is OK if that is what you 
want, but decrying an amateur striking out along a new trail in a search 
for hidden treasure, is being a bit Luddite in my opinion.The 
breakthroughs come with new ideas,many of which may not lead anywhere, 
but, oh the satisfaction and glory when one pans out!And if the amateur 
is doing it for the pure sport, then the journey was enjoyable, too.
Regards,
Charles R. Patton
On 7/11/2012 7:17 AM, Geoff wrote:
> I read all your meandering thoughts on whatever
> and wonder why get lost in looking at trees
> when its the overall forest that really matters.
>
> Why not simply experiment in creating a new
> geophone or whatever and simply keep what
> is proven to work and throw away the remainder.
>
> We are amateurs here not theoretical physicist.
>
> I see a possibility you can hoover a magnetic
> whatever and if the angles and dangles are correct
> you may be able to achieve a horizontal floating
> free period of 20 seconds, even 10 would be acceptable.
> All within a very small area, yet it would require
> equipment to build beyond the abilities of most
> all amateurs.
>
> Then you need to somehow sense the relative
> motion of the hoovering mass against its
> supporting base.
>
> It all sounds so easy in the mind but to
> put it to reality will require a manhatten
> project of instrumentation to carry out.
>
> Good luck you eggheads !
>
> Has anyone ever seen an electron microscope
> which can measure the separation between
> a mass on a spring and the base ?
> But what amateur could ever afford such
> a thing who is not "Bill Gates" himself ?
>
> I think we should just stick with coils and magnets
> till the industrial peoples come up with
> a new circuit on a microchip.
>
> I have been redoing my OS the past several days
> after loosing my Amazon instant movie DRM.
> from this I have learned once you buy DRM stuff
> do not make any system wide changes in NTFS security
> settings or play with services you do not fully
> understand. catching up on PSN reading is generally
> fun after being away for awhile.
> Your attention to complex detail, can sometimes be amusing.
>
>
>
>
> Regards,
> geoff
> __________________________________________________________
>
> Public Seismic Network Mailing List (PSNLIST)
>
> To leave this list email PSNLIST-REQUEST@.............. with the body 
> of the message (first line only): unsubscribe
> See http://www.seismicnet.com/maillist.html for more information.
  
    
  
  
    
      
      
      
      
      Geoff,
      I have to strongly
          disagree with you.  This
          following is a
          bit off the normal PSN discussion, but of such concern to me,
          that I feel I
          have to respond.
       
      I love studying first
          principles of technology -- such as the problem of restoring
          technology from
          scratch on a desert isle.  That
          having
          been said, today there are numerous groups doing fantastic
          things at an amateur
          level.  Take your own
          example of the
          electron microscope.  There
          are some
          amateurs that have made just that -- electron microscopes.  Below are just a few
          additional projects
          that illustrate all the wealth of amateur exploration of
          technology:
      1) Quality lathes
          that can be replicated in 3rd world countries from scrap and
          concrete.  See
          multimachine@...............
      2) Farnsworth fusion
          reactors
      3) 3-D printers
      4) CNC machines of
          various complexities and accuracies.
      5) Radio amateurs
          doing earth/moon (moon bounce) radio communication and
          satellite communication
          through their own designed and constructed satellites. Others
          are doing laser
          communication over multi-kilometer distances
      6) Seismographs of
          professional level sensitivity including those of Randall
          Peters that started
          this particular discussion.  PSN
          has
          acted as a wonderful focus point for all sorts of projects
          centered around the problem
          of sensing internal earth's motions.  
       
      All of the above
          replicate at an amateur level things that didn't exist 100
          years ago.  And then
          there's the problem -- what exactly
          is an amateur?  It
          would seem your
          definition is he/she is incompetent.  I would
          argue that an amateur is just someone who doesn't make his
          living in the area
          that he is exploring/playing with and even that is begging the
          question a
          bit.  What about the
          person who just
          loves his job so much that he goes home and does more of it?  The incredible analog
          electronics designer,
          Jim Williams fit this definition to a tee.  
          Obviously the examples above are accomplished by very
          competent people
          -- but they're doing it for the fun of it with perhaps a
          serious end goal in
          mind.  The first
          example of the
          multimachine has a serious end goal. 
          Many of the amateur seismologists enjoy their "hobby",
          but
          some surely hope that the science progresses and leads to
          better instruments
          and understanding of the earth around them. 
          Again, a serious end goal is the Dave Nelson/Angel
          collaboration on
          vertical instruments of "professional" quality.  
       
      Who knows when a
          hobby idea fertilizes a solution to a problem at work that
          leads to a change
          that raises the level of understanding. 
          Einstein wasn't working as a physicist, but rather as a
          patent examiner,
          when he came up with the theory of relativity and his Nobel
          prize winning paper
          on photoelectricity.   So
          by definition
          he was a amateur.  Amateurs
          can change
          the world.
       
      I'll be the first to
          admit that the amateur construction of many of the examples
          above is
          facilitated by the runoff of ideas and technology as the lake
          of high
          technology  rises
          around us.   But,
          making use of discarded equipment and
          new ideas isn't stupid -- look at it as being "Green"!  And in my mind, the
          Gutenberg press
          invention of the modern world is the World Wide Web, whereby
          we all can
          collaborate on wondrous technology in our own ways.  So sticking to coils and magnets is OK if
          that is what you want,
          but decrying an amateur striking out along a new trail in a
          search for hidden
          treasure, is being a bit Luddite in my opinion.  The breakthroughs come with new ideas,  many of which may not lead anywhere, but, oh
          the satisfaction and
          glory when one pans out!  And
          if the
          amateur is doing it for the pure sport, then the journey was
          enjoyable, too.
       
      Regards,
      Charles R. Patton
       
      
      
      
      
      
      On 7/11/2012 7:17 AM, Geoff wrote:
    
    I read
      all your meandering thoughts on whatever
      
      and wonder why get lost in looking at trees
      
      when its the overall forest that really matters.
      
      
      Why not simply experiment in creating a new
      
      geophone or whatever and simply keep what
      
      is proven to work and throw away the remainder.
      
      
      We are amateurs here not theoretical physicist.
      
      
      I see a possibility you can hoover a magnetic
      
      whatever and if the angles and dangles are correct
      
      you may be able to achieve a horizontal floating
      
      free period of 20 seconds, even 10 would be acceptable.
      
      All within a very small area, yet it would require
      
      equipment to build beyond the abilities of most
      
      all amateurs.
      
      
      Then you need to somehow sense the relative
      
      motion of the hoovering mass against its
      
      supporting base.
      
      
      It all sounds so easy in the mind but to
      
      put it to reality will require a manhatten
      
      project of instrumentation to carry out.
      
      
      Good luck you eggheads !
      
      
      Has anyone ever seen an electron microscope
      
      which can measure the separation between
      
      a mass on a spring and the base ?
      
      But what amateur could ever afford such
      
      a thing who is not "Bill Gates" himself ?
      
      
      I think we should just stick with coils and magnets
      
      till the industrial peoples come up with
      
      a new circuit on a microchip.
      
      
      I have been redoing my OS the past several days
      
      after loosing my Amazon instant movie DRM.
      
      from this I have learned once you buy DRM stuff
      
      do not make any system wide changes in NTFS security
      
      settings or play with services you do not fully
      
      understand. catching up on PSN reading is generally
      
      fun after being away for awhile.
      
      Your attention to complex detail, can sometimes be amusing.
      
      
      
      
      
      Regards,
      
      geoff
      
      __________________________________________________________
      
      
      Public Seismic Network Mailing List (PSNLIST)
      
      
      To leave this list email PSNLIST-REQUEST@.............. with the
      body of the message (first line only): unsubscribe
      
      See http://www.seismicnet.com/maillist.html for more information.