Re: Electrophonic sounds

From: Steven Rogers (srogers1@austin.rr.com)
Date: Mon Jun 05 2000 - 21:00:33 PDT

  • Next message: RocketKevin@netscape.net: "SUCCESS ON PREDICTING UARS AND OTHER SATELLITES!"

    >  > In my time as a meteor observer, I recall that some observers reported
    >  > hearing noises only a few seconds after the meteor burnup.  Obviously, it
    >  > could not be sound.  There is no definitive answer (NASA does zero
    >  > research in meteors.  It basically ignores the entire field.), but the
    >  > latest theory is an electrostatic event.
    >
    >I believe the term you mean is "electrophonic".  As you
    >mentioned, bright bolides can produce electrophonic sounds
    >that are more-or-less coincident with the meteor observation.
    >The theory is that electromagnetic waves interact with metallic
    >objects on the ground (near the observer) which then act as
    >transducers.  Thus the end result is sound, but the sound
    >waves have not had to travel very far.  --Rob
    
    Here are some links to information on meteor and auroral sounds:
    
    http://www2.hunterlink.net.au/~ddcsk/gelphonx.htm
    
    http://www.ips.gov.au/papers/richard/auroral_sound.html
    http://www.ips.gov.au/papers/richard/auroral_sound_explan.html
    http://www.ips.gov.au/papers/richard/witness_report.html
    
    
    Steve
    
    
    Steve Rogers
    @Outcome, Austin TX -- ICQ: 46340238 -- AIM: StevRocket
    
    -----------------------------------------------------------------
    Unsubscribe from SeeSat-L by sending a message with 'unsubscribe'
    in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org
    http://www2.satellite.eu.org/seesat/seesatindex.html
    



    This archive was generated by hypermail 2b29 : Mon Jun 05 2000 - 21:00:46 PDT