Is it poosible a beer glass could be exploded naturally in just 93F degree of room temperature in Arizona?

A beer glass of two coffee-cup size was burst in to pieces with sharp bang suddenly in my kictchen of mobile home on last year in Mesa, Arizona. Room temperature was only about 93F. How could it be happening ? Nothing touched it at all. Only what I could suspect is that I had been using two Black%26amp; Decker ultrasonic pest repellants on the opposite side in the electric outlet of kitchen. Does it affect even to break a sturdy beer glass to peices like an explosion in only 93F degree of hot weather in the room of Arizona? This is still shocking and a mystery to me. In the physics, is there some theory in this kind of case of combination?

I don't think it is a work of ghost or spirit at all as someone might say that way. There may be some natural reason to explain it.

Students in physics or any scientific-minded persons who have experienced this sort of stuff once in a lifetime! Your rationale or scientific theory would be very appreciated. No guessing, please.Is it poosible a beer glass could be exploded naturally in just 93F degree of room temperature in Arizona?
Glasses are under a lot of internal stresses, specially low cost ones. A small scratch could start these internal stresses to release, and the glass could easily shatter.



The ultrasonic sources could have played a part, don't know.



.Is it poosible a beer glass could be exploded naturally in just 93F degree of room temperature in Arizona?
I used to work at a restaurant that had tempered glass lamp shields and beer glasses. Tempered glass has a weird habit of surviving shocks that would shatter ordinary glass only to disintegrate days later at the slightest vibration.

If the glass broke up into thousands of pea-sized pieces with dull edges this is likely what happened.



The explanation is this: The tempering process prestresses the glass, putting the skin under tensile stress and the inside under compressive stress. These are normally in balance. Now the initial shock puts a microscopic crack that does not quite penetrate the skin so it holds together. Then the vibration works the crack back and forth until finally the stresses are no longer in balanced opposition and the unbalanced stresses rip the glass into pieces faster than the speed of sound, and the remaining stresses warp the edges into dullness.Is it poosible a beer glass could be exploded naturally in just 93F degree of room temperature in Arizona?
Yes, it is possible. It happens in a microwave often, when the glass is heated unevenly. This is common in thick glass, because it's heated from the inside - out, with the interior expanding against in outer portion and it shatters explosively.

The ultra-sonic repellant MAY have caused the same thing to happen.