MadSci Network: Engineering
Query:

Subject: Are my glass Christmas ornaments shattering from cold or heat?

Date: Tue Jan 23 01:05:37 2001
Posted by norm smythe
Grade level: nonaligned School: none
City: minneapolis State/Province: mn Country: us
Area of science: Engineering
ID: 980229937.Eg
Message:

We store our Christmas ornaments in our garage attic here in Minneapolis, 
Minnesota. Some years when we take down the boxes to decorate our tree, 
many of the thin glass bulbs are broken inside their boxes. There is no 
sign of box crushing. These are standard 3" bulbs with non-airtight tops. 
To settle a bet, are these bulbs more likely breaking from the -20 degree 
F temps, or from the +110 degree F temps in our attic?
Thank You


Re: Are my glass Christmas ornaments shattering from cold or heat?

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