[ame]https://www.youtube.com/watch?v=DV87i-DbNo8[/ame]
A few curiosities here I'm having trouble wrapping my head around. They start spinning the shaft in a clockwise that forces the paddles to an almost 90 degree angle which get the mass spinning rather quickly, then reverse rotation of the shaft. This flips the paddles to an almost zero degree angle and reverses the whirlpool. The zero degree angle allows them to stop the shaft without the paddles disturbing the whirlpool.
But why the initial clockwise rotation? Are the zero degree paddles given an advantage by initially rotating against a spinning mass? Seems pointless on the surface, but there's clearly a reason.
Additionally, note the stationary and seemingly purposeless paddle of similar design attached to the right side of the kettle. It flops one way during the clockwise rotation, then flips as the mass of fluid changes direction. WHY??
I've watched this video 47,000 times and can't for the life of me figure it out.
A few curiosities here I'm having trouble wrapping my head around. They start spinning the shaft in a clockwise that forces the paddles to an almost 90 degree angle which get the mass spinning rather quickly, then reverse rotation of the shaft. This flips the paddles to an almost zero degree angle and reverses the whirlpool. The zero degree angle allows them to stop the shaft without the paddles disturbing the whirlpool.
But why the initial clockwise rotation? Are the zero degree paddles given an advantage by initially rotating against a spinning mass? Seems pointless on the surface, but there's clearly a reason.
Additionally, note the stationary and seemingly purposeless paddle of similar design attached to the right side of the kettle. It flops one way during the clockwise rotation, then flips as the mass of fluid changes direction. WHY??
I've watched this video 47,000 times and can't for the life of me figure it out.