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Let me try this again. The entire tub is spinning at a rate of 1 revolution per day about an axis parallel to the earth`s axis. The component of that spin around the tub`s vertical axis is proportional to the cosine of the latitude.
The angular momentum of one molecule of water relative to the vertical axis of the tub is 2(pi)r m cos(lat)/t, where r is the distance of the molecule from the rotational axis, m is the mass of the water molecule, and t is the period of rotation.
For each molecule of water in the tub, this quantity must remain constant. When you pull the plug, and the water moves toward the drain, the distance r is decreased, and therefore, the time period t must also decrease to keep the entire quantity constant. In other words, the water HAS to increase it rotational speed as it moves toward the center of the tub to keep its angular momentum constant.
your country is doing well? HA! that actually cracked me up more than the article
Doesn`t say where he was born, but the page says "Paul Jury is a writer & comedy web video producer in LA." so I`m guessing he probably is american. Therefore the answers to your not-quite-questions are: They don`t, most likely not, and not really.
And I kind of like the explanation of difference in speed. That one is very pleasant, because you can understand it. Basically, it`s a fictional force which comes up when you try to convert a rotating coordinate system to a flat one. And it is rather the difference in speed which makes it happen.
Imagine standing at the north pole and throwing a rock towards the equator. Since the rock doesn`t move when you`re standing at the pole, but the earth moves quite fast at the equator, the path of the rock would appear to accelerate against the direction of the rotation of the earth for an observer standing on the ground. So it is rather strongly related to the speed difference.
Take a round tub on a stand, drill a hole in the center of the bottom, and put a stopper in the hole from the bottom. Then fill it with water, let it sit for a few hours, and pull the plug. In the northern hemisphere the water will start to spin counter-clockwise; in the southern hemisphere, it will spin clockwise. The water is already rotating due to earth`s rotation. It speeds up as it moves toward the center, just like a spinning skater. The effect is small, but it is real.
The water in a toilet spins mostly because the water from the tank is directed at an angle to cause it to spin. You can make the water spin either direction, but toilets work better if they work with, not against, the Coriolis effect.
However, I have heard the misconception that he thought it was round and everyone else thought it was flat. Untrue, but makes more sense.
Didn`t need that part. X_x
I second that.
Actually, it`s mostly nitrogen.
Take a clockwise-swirling basin from the southern hemispehere over the equator to the northern, install it in exatcly the same way, exactly upright etc, and the water will STILL swirl clockwise. Things like the Long Way Down where theye did it are tourist traps for gullible mugs.
And besides, if you actually know what the coriolis force is, you`ll realize it can`t have any significant effect on the spin of the water.
and he agrees with it too. all he said was that we didnt evolve from the apes that we have now
But other than that it was a well written and entertaining article.
more accurately, we evolved from a common ancestor shared with modern apes today. but i`m pretty sure that`s what you were getting at.
Except creationism. :D