18.08.2025
  3

Riddle: If boiling water is poured into a thick drinking glass as well as a very thin wine glass. Which of the two is more likely to crack?

Answer: The thick glass is more likely to crack since glass is a poor conductor of heat. In a thin glass, the heat passes more quickly from the glass into the surrounding air, causing the glass to expand equally. When hot water is poured into a thick glass, the inner surface expands, but the outer surface does not. It is this extreme stress on the glass that causes it to crack.

  Water glass

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