[ATM] Impact of stressed glas- primary/secondary

[jgmoreau at cablevision.qc.ca (Jean-Guy Moreau)]

Thanks Rick for the precision about M.Halem,
some of his schedules may be off,
nevertheless i think his explanation of the annealing
mechanism is correct.

Jean-Guy










***************************************************************************** 
> > Hello Rick, a good explanation of the annealing
> > process can be found in :
> > 
> > Glass Notes: a reference for the glass artist
> > by Prof. Henry Halem
> > Director of Glass Studies
> > Kent State University, Kent, Ohio
> 
> I'd take anything Halem says with a bit of caution.He
> had an annealing equation on his site a while back
> that was really screwed up.I found the correct
> formulae in a University text book on pyrex glass
> manufacturing and had to send it to him.He deleted my
> credit on finding the correct one a while back aswell.
> 
> People in the art's field seem to do their annealing
> from just experimenting or hearing a schedule from
> someone who heard someone who heard it from someone
> else etc,etc.The pyrex annealing equations I gave him
> came from a book printed in the 40's!
> 
> Ric
> 
> 
> 
> 
> 
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