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What Hemisphere You Are in Does Not Affect the Way Water Spins Down Your Drain

 
Stu
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07/31/2010 02:56 PM

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What Hemisphere You Are in Does Not Affect the Way Water Spins Down Your Drain
What Hemisphere You Are in Does Not Affect the Way Water Spins Down Your Drain


[link to www.todayifoundout.com]


(reprinted with permission)


Today I found out what hemisphere you are in does not affect the way water spins down your drain.

So why do some textbooks, most tour guides, and pretty much all TV shows like The Simpsons get it wrong? The myth that water in your drain will spin differently depending on what hemisphere you are in primarily stems from taking a very real physical precept, namely the Coriolis Effect, and applying it to a situation that it doesn’t make sense with.

The Coriolis Effect, named after Fustav Gaspard de Coriolis (1792-1843) who published a paper in 1835 on the subject, is basically an apparent force relative to the Earth’s surface that causes objects to appear as if they are moving in somewhat of a curved path. What’s actually happening is they are moving straight and it is the Earth turning that makes it look like they are curving. So more practically, it causes apparent deflection of moving objects to the right in the Northern Hemisphere; to the Left in the Southern Hemisphere; and no apparent deflection on the equator.

So it seems reasonable enough to think that the Coriolis Effect would affect the way the water spins down the drain. Indeed, things such as hurricanes and other large cyclonic systems are very much affected by the Coriolis Effect in terms of which way they spin. However, a hurricane might literally be 500 miles in diameter and last for many days; your sink or toilet is very small in comparison and the time the Coriolis Effect has to influence the draining water is very small as well. In fact, when we are talking draining sinks, toilets, and bathtubs, the size and time scale is so small that the Coriolis Effect force is practically non-existent in terms of effecting the water in any way, especially when compared to the other forces in play here like the shape of the sink, the way the jets are pointed in the toilet, and things of this nature.

In this case, the Coriolis Effect has about the same affect on the swirling water in your toilet as a butterfly’s wings flapping have on a Tornado.

Sources:

Which way does water spin down a drain?
Coriolis Effect
The Coriolis Force
Coriolis Effect
Coriolis
_____________________________________
There is no use removing doubts one by one. If we clear one doubt another doubt will arise and there will be no end of doubts. But, if by seeking the doubter, the doubter is found to be really non-existent, then all doubts will cease. -- Ramana Maharshi


You have to keep breaking
your heart until it opens.

~ Rumi
Anonymous Coward
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07/31/2010 03:01 PM
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Re: What Hemisphere You Are in Does Not Affect the Way Water Spins Down Your Drain
norespect
Anonymous Coward
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07/31/2010 03:06 PM
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Re: What Hemisphere You Are in Does Not Affect the Way Water Spins Down Your Drain
Yes it does.

When you are perfectly on the equator, water just falls straight down your sink or toilet. No spinning at all.
Anonymous Coward
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07/31/2010 03:14 PM
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Re: What Hemisphere You Are in Does Not Affect the Way Water Spins Down Your Drain
look at one end of a tube [paper towel etc.]

rotate the tube clockwise.

keep rotating and look at the other end.
Rex Khristos

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07/31/2010 03:20 PM
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Re: What Hemisphere You Are in Does Not Affect the Way Water Spins Down Your Drain
Yes it does.

When you are perfectly on the equator, water just falls straight down your sink or toilet. No spinning at all.
 Quoting: Anonymous Coward 1022087

Nor do some children's toys work...
"And though I believe in the ineffable glory of God, and though I might have experienced the undeniable reality of the Deity, and though I may know the secrets of the ages, these do not fulfill the Love in my heart. But to Change and Be and Do and dissolve both the subject of my person and the object of my God into the fluency of Empirical Providence. The Way, the Truth, and the Life."
Anonymous Coward
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07/31/2010 04:45 PM
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Re: What Hemisphere You Are in Does Not Affect the Way Water Spins Down Your Drain
You been talking to that dumb Canadian too much
Rex Khristos

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07/31/2010 06:30 PM
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Re: What Hemisphere You Are in Does Not Affect the Way Water Spins Down Your Drain
Casinos are also not built on the equator for this reason, the roulette table doesn't work.
"And though I believe in the ineffable glory of God, and though I might have experienced the undeniable reality of the Deity, and though I may know the secrets of the ages, these do not fulfill the Love in my heart. But to Change and Be and Do and dissolve both the subject of my person and the object of my God into the fluency of Empirical Providence. The Way, the Truth, and the Life."
Anonymous Coward
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07/31/2010 06:32 PM
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Re: What Hemisphere You Are in Does Not Affect the Way Water Spins Down Your Drain
you people are just plain stupid
Rex Khristos

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07/31/2010 06:34 PM
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Re: What Hemisphere You Are in Does Not Affect the Way Water Spins Down Your Drain
you people are just plain stupid
 Quoting: Anonymous Coward 1050263

cruise
"And though I believe in the ineffable glory of God, and though I might have experienced the undeniable reality of the Deity, and though I may know the secrets of the ages, these do not fulfill the Love in my heart. But to Change and Be and Do and dissolve both the subject of my person and the object of my God into the fluency of Empirical Providence. The Way, the Truth, and the Life."
Anonymous Coward
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07/31/2010 06:35 PM
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Re: What Hemisphere You Are in Does Not Affect the Way Water Spins Down Your Drain
Nope it doesn't it depends on how the water is put into the drain for example toilets it comes out of the same place in all toilets.
So the water spins the same way counter clockwise.
p00p
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07/31/2010 06:47 PM
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Re: What Hemisphere You Are in Does Not Affect the Way Water Spins Down Your Drain
I poop straight down on the equator.
Stu (OP)

User ID: 838921
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07/31/2010 06:54 PM

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Re: What Hemisphere You Are in Does Not Affect the Way Water Spins Down Your Drain
Yes it does.

When you are perfectly on the equator, water just falls straight down your sink or toilet. No spinning at all.
 Quoting: Anonymous Coward 1022087






explain why the water in my toilet goes straight down


I live in So Calif
_____________________________________
There is no use removing doubts one by one. If we clear one doubt another doubt will arise and there will be no end of doubts. But, if by seeking the doubter, the doubter is found to be really non-existent, then all doubts will cease. -- Ramana Maharshi


You have to keep breaking
your heart until it opens.

~ Rumi
AWhereness

User ID: 908143
United States
07/31/2010 06:56 PM
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Re: What Hemisphere You Are in Does Not Affect the Way Water Spins Down Your Drain
This equates to a spin on poo spiraling down the drain...except where someone just drops one....
When we remember we are all mad, the mysteries disappear and life stands explained.

Mark Twain
Rex Khristos

User ID: 908143
United States
07/31/2010 06:57 PM
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Re: What Hemisphere You Are in Does Not Affect the Way Water Spins Down Your Drain
explain why the water in my toilet goes straight down


I live in So Calif
 Quoting: Stu

You have stupid water.

Google it!

Last Edited by Apotheosis Rex Khristos on 07/31/2010 07:00 PM
"And though I believe in the ineffable glory of God, and though I might have experienced the undeniable reality of the Deity, and though I may know the secrets of the ages, these do not fulfill the Love in my heart. But to Change and Be and Do and dissolve both the subject of my person and the object of my God into the fluency of Empirical Providence. The Way, the Truth, and the Life."
Anonymous Coward
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07/31/2010 07:03 PM
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Re: What Hemisphere You Are in Does Not Affect the Way Water Spins Down Your Drain
design of said toilet,sink,drain determines how the water drains.
/thread
Anonymous Coward
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07/31/2010 07:08 PM
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Re: What Hemisphere You Are in Does Not Affect the Way Water Spins Down Your Drain
Find a dvd copy of " long way down" the motorcycle adventure trip documentary where Ewen Mcgregor and Charlie Boorman travel from john o'groats Scotland south to Capetown south Africa.

They stop while crossing the equator and demonstrate: 100 feet north of the equator line; water falling through a hole punched in a simple soup bowl; spins a piece of floating debris(blade of GRASS) CCW. MOVE up to the equator: it doesn't spin at all. cross it and go south a bit and it spins clockwise.

Why do we see these ridiculous threads pop up??? s226
AWhereness

User ID: 908143
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07/31/2010 07:12 PM
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Re: What Hemisphere You Are in Does Not Affect the Way Water Spins Down Your Drain
They stop while crossing the equator and demonstrate: 100 feet north of the equator line; water falling through a hole punched in a simple soup bowl; spins a piece of floating debris(blade of GRASS) CCW. MOVE up to the equator: it doesn't spin at all. cross it and go south a bit and it spins clockwise.

Why do we see these ridiculous threads pop up??? s226
 Quoting: Anonymous Coward 1049828

In dire hope that some fragment of truth might surface. In this case, though, it's flushing ridiculous.
When we remember we are all mad, the mysteries disappear and life stands explained.

Mark Twain

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