[time-nuts] Better quartz crystals with single isotope ?

Martin VE3OAT ve3oat at storm.ca
Mon Apr 23 16:37:24 EDT 2018


I always thought crystals with dislocations were used to mark the band 
edge frequencies.
... Martin    VE3OAT

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On Sun, 22 Apr 2018 11:34:30 -0600 djl wrote :
 >
 > Darn. maybe not grain boundaries, but dislocations? or both?
 > Don
 >

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