Coriolis effect and water experiment

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Discussion Overview

The discussion centers around the Uganda water experiment, which is purported to demonstrate the Coriolis effect on water drainage. Participants explore whether this experiment qualifies as a scientific experiment and debate the validity of the claims surrounding it, with a focus on the Coriolis effect's influence near the equator.

Discussion Character

  • Debate/contested
  • Exploratory
  • Technical explanation

Main Points Raised

  • Some participants question whether the Uganda water experiment is a legitimate scientific experiment, noting the lack of a definitive answer and the presence of opposing opinions.
  • One participant references the Shapiro experiment to highlight that the Coriolis force is not a binary effect, being approximately zero near the equator, which could affect the experiment's outcomes.
  • Another participant suggests that the Uganda water experiment may be more of a tourist attraction than a scientifically valid demonstration.
  • A participant discusses the Coriolis effect's maximum influence at the poles and its negligible effect near the equator, proposing a mathematical consideration of the effect's magnitude.
  • One participant recounts an anecdote about an engineer claiming to have witnessed the Coriolis effect at the equator, expressing skepticism about the validity of such observations.
  • Another participant asserts that Coriolis effects can occur anywhere on Earth, depending on the angular rotation vector and relative velocity vector, but may not be apparent in certain experiments near the equator.

Areas of Agreement / Disagreement

Participants do not reach a consensus on whether the Uganda water experiment is a valid scientific experiment. Multiple competing views exist regarding the nature of the Coriolis effect and its implications for the experiment.

Contextual Notes

Participants express uncertainty regarding the Coriolis effect's visibility in experiments conducted near the equator and the conditions under which it can be measured. There are also unresolved assumptions about the nature of the Uganda water experiment and its scientific validity.

Rzbs
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Is the Uganda water experiment (that shows corilios effect on water drain) a scientific experiment or not?
I searched but I couldn't find a final answer to this question. There are two opposite opinions, which one is correct?
Or this argument is an open issue yet?
Thanks for your replies...
 
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Rzbs said:
Summary:: Is the Uganda water experiment a scientific experiment or not?

Is the Uganda water experiment (that shows corilios effect on water drain) a scientific experiment or not?
I searched but I couldn't find a final answer to this question. There are two opposite opinions, which one is correct?
Or this argument is an open issue yet?
Thanks for your replies...
https://thepointsguy.com/2017/07/travel-myths-backwards-water/
 
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Thanks, so the Uganda water experiment is only a trick and a show for absorbing tourists, yes?
 
Rzbs said:
Thanks, so the Uganda water experiment is only a trick and a show for absorbing tourists, yes?
I guess so!
 
On th back of an envelope: the Coriolis effect is maximum at the poles, zero at the equator. So take the sine of the longitude (=sin(44,9... degrees) of the amazed tourists, and multiply this with the ratio of the angular velocity w of the water (w=O(1)) turning w.r.t. the Earth's rotation (w=2pi/86400).

I'd guess that's one heck of a small number.
 
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During the world year of physics in 2005 I was assisting at a Foucault's pendulum hanging at our city's church, where Shell held a conference one day. An engineer told me he witnessed the Coriolis effect at the equator. I tried to convinced him he was scammed. He was reluctant.

That was the moment I started to doubt whether it would be a good idea to let Shell search for and suck up oil near the North Pole.
 
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haushofer said:
Shell
They paid dowsers to locate buried drainage tiles (so they would not be damaged by exploration activities).
 
There are Coriolis effects any time the angular rotation vector and the relative velocity vector relative to the rotating reference frame has a non-zero cross product. That can happen anywhere on earth. The position is not in the equation. It just may not be very apparent at the equator in certain experiments. It depends on the direction of the relative velocity vector.
 
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