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The Strange Reason Why Airplane Windows Are Round
(
travelandleisure.com
)
3 points
by
DoreenMichele
on June 20, 2018
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2 comments
dudul
on June 20, 2018
[–]
I think I recall reading that manholes are round for the same reason. More resistant to erosion of the ground or something than square shaped holes.
petee
on June 20, 2018
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parent
[–]
I believe they are also round so they can't fall into the hole if jostled loose - a square can just fall through on an angle.
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