Why does a glass tumbler sometimes crack on pouring very hot tea?
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glasses are not good conducters of heat
when hot tea is poured, on the surface where it is poured it expands
where as the heat is not passed throughout hence there will be stress created n causes breakage of the tumbler
when hot tea is poured, on the surface where it is poured it expands
where as the heat is not passed throughout hence there will be stress created n causes breakage of the tumbler
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