‘What’s it all about, Grandpa? Why do you think it does that?’
‘I don’t know, Billy; maybe some scientist could explain it; I can’t. What interests me is it’s the opposite of the Coriolis effect in our sink. Come on, now I’ll show you one more thing.’
He leads me into his greenhouse. In there, he’s rigged a little hose from his watering system so it runs into a funnel and the funnel is fitted into an old bucket. He has a small plug in the funnel with a string on it. First he turns on water till the funnel is full. Then he puts the tip of the notched stick on the edge of his funnel and begins rubbing back and forth till the water in the funnel is vibrating, quivering on the surface.
‘Now, Billy, pull the plug and watch what happens.’
I pull and watch the water pour out through his funnel into the bowl while he rubs away on his stick. The water goes down counter-clockwise, anti-Coriolis!
‘What do you think of that, Billy?’
‘What made it go backwards, Grandpa? Vibrations?’
‘That’s another question for the scientists, Bill. But if they don’t even believe water goes down the drain clockwise, how can they know about “twirly sticks”?’
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