If two materials with different coefficients of expansion are held together (by rivets glue or some other means) and subjected to changing temperatures the resultant stress might cause one or the other or both to fail (break).
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No, we use expansion and contraction to tell temperature(thermometer).
Thermal expansion and contraction, specifically the different coefficients of thermal expansion (CTE) between glass and metal....AND ITS LIKE A (CLOSED SYSTEM)
The result is friction.
A similar noise can be heard coming out of the electric meters attached to ... causes expansion and contraction of the wire, producing sound.
they r called contraction joints. then every few of those then expansion joint. concrete is going to crack, so make it crack so it can't be seen,under the man made ones. concrete tends to crack symmetrically. so if ur sidewalk is 3 feet wide the contraction joints will be every 3 feet. then expansion joint, 3/4 inch with expansive material, every 4th one.