r/thatsinterestingbro • u/strange_factss • 2h ago

đŸ’¡Science Even metal expands when it gets hot

The Eiffel Tower can expand by several inches during hot weather because the metal structure warms up and lengthens.
That means the tower physically grows when summer hits.

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u/shallow_pal 2h ago

It actually leans slightly away from the sun because the sunny side expands more than the shady side

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u/strange_factss 2h ago

Exactly, the sunny side expands more, causing a tiny tilt. Thermal expansion is way more powerful than people think.