posted on Dec, 19 2016 @ 09:17 PM
a reply to:
Cloudbuster
i see no reason why putting glass jars in a domestic freezer will make them crack
thermal cracking of glass is caused by stress - when the inside and outside surfaces of a jar expand or contract at vastly different rates
the thicker a jar walls - the more likley it is to crack
glass is not particularly thermally conductive - so when you fill a cold bottle with boiling water - the inside espands - but as heat is only slowly
conducted through the glass - the outside remains at the origional temerature
this - stresses are created - and CRACK the bottle breaks
does that make sense ??????????????????
a domestic freezer will not cool the outside fast enough for stresses to build up 0 the entire jjar and contents - will cool at a relativly uniform
rate