platinum-iridium wire

Pascal_Bochet Pascal_Bochet at brown.edu
Tue Jun 3 09:08:11 EST 1997


In article <5muul2$c38$1 at pulp.ucs.ualberta.ca>, smaw at gpu4.srv.ualberta.ca 
says...
>
>A working contact for Pt-Ir wire should be A-M Systems Inc of Carlsborg,
>WA, USA.  (contact at http://www.a-msystems.com, or on e-mail at 
>sales at a-msystems.com)
>
>Sean
>
Why don't you try the "Bureau international des poids et mesures" in Sevres 
France. They have this exactly one meter long Pt-Ir rod which is no longer 
the definition of one meter. Maybe they don't need it anymore. As you know 
one meter is now the distance traveled by energy in vacuum in a time 
which is roughtly 1/3.10^8 s (I do not have the exact figure at hand).
Pascal Bochet




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