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???
10/04/09 14:10
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#169392 - Why ?
Responding to: ???'s previous message
Jecksons Ben said:
It used also accellerometer from analog.


Why did it use the AD chip ? Like I said, not well suited to long period seismic detection. The Lehmann is really easy to build.

There was an optical force feedback seismometer featured in an old "amateur scientist" column in Scientific American 10 years or so ago.

Steve

List of 22 messages in thread
TopicAuthorDate
Earthquake sensors with X-Y accelerator            01/01/70 00:00      
   Sorry - was there a question?            01/01/70 00:00      
   Seismograph            01/01/70 00:00      
      Why is that?            01/01/70 00:00      
         Oddly            01/01/70 00:00      
            Phew!            01/01/70 00:00      
            Noooo            01/01/70 00:00      
      with accellerometer            01/01/70 00:00      
         Why ?            01/01/70 00:00      
            With Accellerometer below 100US            01/01/70 00:00      
               Cheap - but useless?            01/01/70 00:00      
                  thinking of it            01/01/70 00:00      
                     on second thought            01/01/70 00:00      
                  Did I said networked accellerometer?            01/01/70 00:00      
                     Sensing            01/01/70 00:00      
                        laptop/notebook            01/01/70 00:00      
                           fundamental flaw?            01/01/70 00:00      
                              SEEK and ye shall find            01/01/70 00:00      
                                 have seen before            01/01/70 00:00      
                                    What's the point            01/01/70 00:00      
                                       what's the point?            01/01/70 00:00      
               Read ?            01/01/70 00:00      

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