[ARC5] [Glowbugs] "Using Defective Crystals" 1937

[Kenneth G. Gordon]

On 21 Jun 2020 at 22:59, Roy Morgan wrote:

> Hue,
> 
> This is an interesting article.  I have had one of the round crystal holders shown, but never took it apart.
> 
> The business about 
> 
> "If it (the crystal) has been cracked ... possible to get several good
> crystals from an inch square plate ... all of which will oscillate on
> the original frequency."  
> 
> is pure baloney, based on all I have learned about quartz crystals and
> how they operate. 
> 
> It is possible of course - I never tried it.  I suspect they never
> tried it either! 

You are probably correct, BUT, the frequency at which some cuts of crystal oscillates is 
primarily determined by its THICKNESS.

Ken W7EKB