[irised] Mohorovicic's instruments

[John or Jan Lahr]

If you think the AS-1 can be tricky to run and takes up quite a bit 
of space, check out the instruments that Andrija Mohorovicic 
(1857-1936) used to discover the crust-mantle discontinuity, now call 
the Mohorovicic Discontinuity, or Moho for short.

http://www.gfz.hr/sobe-en/seismographs.htm

With masses of up to 1,200 kg (2,645 lbs), these were truly gigantic 
instruments!

There is a good article on this important scientist in the 
Seismological Research Letters.  It's posted 
here:  http://www.seismosoc.org/publications/SRL/SRL_78/srl_78-6_hs.html

Happy Thanksgiving Reading,
John