Why is a metal spoon dipped into a glass glass before hot water is poured into it?
| October 28, 2020 | Education
Glass has low thermal conductivity, so it heats up unevenly and may crack in the place where hot water is poured. To prevent this, you can put an object with high thermal conductivity (for example, a spoon) inside the glass so that the glass is heated more evenly.
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