An Inconvenient Truth

[Jun aka Pekto]

Actually, walang kinalaman pwesto mo sa mundo sa ikot ng tubig sa drain. Myth lang yun, and it has all to do with the design and orientation of the sink/toilet/bathtub/etc.

The Coroilis effect only affect the "big" things (typhoons, tornados, sea currents, etc.).

That's partially true especially with a toilet. But, when you let water drain from a directionally neutral source like a sink or a tub which drains via gravity, the Coriolis Effect does apply. A friend from Ecuador verified it for me several years ago when I was really curious about it.

Add: Actually back then, I was wondering how water drained at the Equator.