water rotation as it leaves your bathtub and wash basin?
407244
The idea that the water rotates one way in one hemisphere and the other way in the other hemisphere is a myth.
53482
warm salt-water flush
319097
water will get deeper
549271
Only if you wash it down with some holy water
240419
It should flow counterclockwise because of the Coriolis effect.\n\nHowever:\n\n>> But, the Coriolis force is very small, indeed. \n \nCompared to the rotations that one usually sees (tires on a travelling automobile, a compact disc playing music, or a draining sink), the rotation of the Earth is very small: only one rotation per day. The water in a sink might make a rotation in a few seconds and so have a rotation rate ten thousand times higher than that of the Earth. It should not be surprising, therefore, to learn that the Coriolis force is orders of magnitude smaller than any of the forces involved in these everyday spinning things. The Coriolis force is so small, that it plays no role in determining the direction of rotation of a draining sink anymore than it does the direction of a spinning CD. \n\nThe direction of rotation of a draining sink is determined by the way it was filled, or by vortices introduced while washing. The magnitude of these rotations may be small, but they are nevertheless gargantuan by comparison to the rotation of the Earth. I decided to include a picture of a draining sink, and the first one I tried in my house was found to drain clockwise (the opposite of what the silly assertions would have it do here in the northern hemisphere). This direction was determined entirely by the way the tap filled the sink. The direction of rotation of a draining toilet is determined by the way the water just under the rim is squirted into the bowl when it is flushed.<<\n\nI guess you'll just have to observe - I have made the water in kitchen sinks swirl the "wrong" way just for the heck of it, and it doesn't begin to immediately go the "right" way unless I act on it.
49342
Some will say the Coriolis force (one of the fictitious forces that we observe because we live in a noninertial rotating frame), and predict that it will swirl clockwise in the southern hemisphere. However, these forces are overcome by all kinds of other geometric effects and residual motion etc. \n\nFor example, fill a sink with a few inches of water, and swirl it with your hand, either clockwise or anticlockwise. Wait for a few minutes until you are sure that the water is still. Then carefully drop in a drop or two of food coloring and watch. The water will remain in motion for hours from your stirring. When you remove the stopper, you can create a bias towards an anticlockwise or clockwise drain vortex. The shape of the drain can also influence the direction of this fluid motion. \n\nThe flushing of a toilet is a very vigorous event, and so it will have a large effect on the direction of fluid motion, along with many other factors.
1062282
To Save The Water Bath Together...:-)
292737
Water will spin in water ever way it is induced to spin.\nThe coriolis is effect is real, but it is extreamly weak and does not play a role in the way that water will flow down a drain or out of a toilet.  Water will spin whatever was it is induced to by the toilet nozzles pushing it.\nIt is not true that all toilets in the norther hemisphere spin one way and toilets in the southern hemisphere spin the other direction.
528357
because of the gravitational pull on the water, it comes down, not straight
69149
well, as you know australia is in the southern hemisphere, "down under".  this means that they are on the underside of the earth, so instead of gravity pulling things downward, it pulls things upwards.  when australians flush a toilet, it opens a valve in the toilet and the gravity sucks sewage out of the pipes and it sprays all over the bathroom.  this is actually how we get rid of our sewage here in the northern hemisphere.  this is possibly also why the australian tourism economy has been struggling lately.  poor guys.\n\njust kidding.  (:\n\ni believe you are talking about the "direction" of the flush - how in the norther hemisphere the water circulates clockwise, but in the southern hemisphere the water circulates counterclockwise.\n\nwell, it turns out this is a total urban legend.  it's not true, and you can go to australia to check it yourself.  toilets in both the northern and southern hemisphere circulate both ways, totally regardless of where you are.  read more about it here:\nhttp://www.snopes.com/science/coriolis.htm\nhttp://www.ems.psu.edu/~fraser/Bad/BadCoriolis.html\n\npeople often chalk this up to the "coriolis effect" which says that moving objects experience a "twisting" force that depends on your distance from the equator.  the coriolis effect IS real, but it is very weak, and only has measurable effect over long distances and very small particles.  it DOES cause storms to rotate in different directions, for example, but your sink is simply too small and too fast for it to make a difference.\n\nso what DOES cause your toilet to rotate in one direction or the other?  it all has to do with small details of how your toilet is built, and the biggest effect has to do with how the water runs into the bowl.  \n\nmost toilets squirt the water into the bowl at an angle, to set up this spinning effect, which gives you a better flush.  however which direction this angle points is totally arbitrary, and if you change the direction the water runs the other way.\n\nso, sorry if this comes as bad news, but what you've been told just isn't true.
709507
get a stirle jar and have a crap in the bathtub and wash the rest down the drain. and wash yourself clean after as well and clean any mess up so no one else has to deal with it
481396
clockwise it doesnt go counter like so many people think if you know the laws of the coriolis effect you would know that the water below the equator flows counter clockwise however the water in the toilet is not large enough to be considered for the coriolis effect...sooo clockwise
686922
The water from the bottom is being transformed from liquid to gas and the gas bubbles to the top.  Kinda like when you're in the bathtub and fart.
1103399
The water will evaporate so there you go.
300739
I always thought that the water fell down the drain different directions in the world.  When I was watching Dr. Know the other night, he said that this myth was not true and it really doesn't matter where you are located in the world, it depends on how the drain is made.
295379
Ok, look at it like this. What would happen if ever fawcet handle in your house popped off from ever sink and bathtub? \nWater would fill the sinks and bathtubs, then over flow. Before you know it your house is flooded and the structure becomes unstable and eventually breaks down. The water are imigrants. The fawcets and handles are imigration quotas and the house that breaks apart at the foundations would be this country. Ever hear of the saying, "Too much of anything isn't good"?
924997
If you don't, some of the water will evaporate into the air, so it will seem like you "lost" some water.