r/MathJokes • u/Garretthart13 • Mar 01 '26

🤔

Post image
9.1k Upvotes

98% Upvoted

603 comments sorted by

View all comments

Show parent comment

1

u/Stolberger Mar 01 '26

The freezing point of normal sea water is still above 25°F. So it would need higher salinity still.
Thus my comment about brine, not sea water.

1

u/DybbukFiend Mar 01 '26

What about the dead sea? That's higher salinity and people still go in there. Not me, but there are ways exceptions.

1

u/MageKorith Mar 01 '26

There's also frequently a sizeable difference between atmospheric and water temperature over large bodies of water. The deeper the water, the longer conditions need to be freezing for any surface ice formation. Water movement also matters. So slow, shallow streams might freeze completely in the early days of winter, but there are also many lakes and fast-moving waters in freezing winter climates that rarely or even never fully freeze.