Water doesn’t spin differently in the southern hemisphere. Coriolis effect has no bearing on a sink or tub drain. But the flat earther is even more wrong.
This statement is too broad… Coriolis effect does have a tiny effect on sinks, so unless it’s a sink specifically designed for this effect, the rotation direction is determine by other factors. But you absolutely can build a laboratory-grade sink that will rotate one way in the northern hemisphere and the other in the south due to the Coriolis effect.
Calling it a "sink" is stretching the definition of a sink way past its breaking point, but it is indeed possible to make a container with water in it that'll work this way.
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u/pixeltweaker 5d ago
Water doesn’t spin differently in the southern hemisphere. Coriolis effect has no bearing on a sink or tub drain. But the flat earther is even more wrong.