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Air pressure changes when the hot water generates warmer air, thus like the weather, wind (or in this case a small draft upwards) is generated. Air pressure and current causes the shower curtain to move as cooler air is sucked under and around the curtain.

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Q: When water is turned on in a shower the water curtain moves toward the water because?
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What happens to a shower curtain when a shower is turned on?

Many people have tried to figure out exactly how and why this happens but no one has ever proven their theories conclusively. There are 4 leading theories. The first is the Buoyancy theory. Which says that as the hot air rises, and replaces the cold air, it creates a Coandă effect which is similar to a small vortex of air which sucks the curtain inwards. The second is the Bernoulli effect. This states that the air matches the velocity of the water coming out of the shower-head and lowers the air pressure inside the shower and against the inside of the shower curtain. This results in the shower curtain being pulled inward. The third is a combination of the first two. It's called the Horizontal vortex theory. A computer model showed that the water coming out of the shower-head can create a horizontal vortex (sideways tornado) which causes a pressure drop and pulls in the shower curtain. The fourth and final is simple condensation. A hot shower produces steam that will condenses on the shower side of the curtain and lowering the pressure there. The condensation will be continually replaced causing a temperature fluctuation which results in times where net steam production is negative. So there you have it. Who would have thought such a simple thing still remains partially unproven.


Why is it that things feel hot but are really cold?

because they are like an curling iron that is turned off. you look at it and your mind is like "this is going to be hot." because of mind over matter, it MUST be hot. but, you touch it and (because its turned off) its cold. so that's how things feel hot but are really cold.


Why are the lights turned off in making a photographic film?

That's because photographic plates are sensitive to light.


Why water evaporates very slowly in a fridge?

because the reason water evaporates is because it is heated up and is turned into a gas, the fridge is cold so it will go slower.


Why is your house warm on a cold day even if you haven't turned on the heat?

because the heat that is already in your house has been stored right

Related questions

What happens to a shower curtain when a shower is turned on?

Many people have tried to figure out exactly how and why this happens but no one has ever proven their theories conclusively. There are 4 leading theories. The first is the Buoyancy theory. Which says that as the hot air rises, and replaces the cold air, it creates a Coandă effect which is similar to a small vortex of air which sucks the curtain inwards. The second is the Bernoulli effect. This states that the air matches the velocity of the water coming out of the shower-head and lowers the air pressure inside the shower and against the inside of the shower curtain. This results in the shower curtain being pulled inward. The third is a combination of the first two. It's called the Horizontal vortex theory. A computer model showed that the water coming out of the shower-head can create a horizontal vortex (sideways tornado) which causes a pressure drop and pulls in the shower curtain. The fourth and final is simple condensation. A hot shower produces steam that will condenses on the shower side of the curtain and lowering the pressure there. The condensation will be continually replaced causing a temperature fluctuation which results in times where net steam production is negative. So there you have it. Who would have thought such a simple thing still remains partially unproven.


Why can't your sim take a shower?

the shower might be turned the wrong way so they can't use it or something could be blocking the shower the path to the shower.


At her bridal shower why do you think Angela turned the gold box containing the bomb to herself?

because she knew what was in the gold box because she had put the bomb in the gold box.


What could be wrong if when you are showering and another faucet is turned on the shower water cools?

Its a loss in water pressure to the shower.


Why do guys take a cold shower?

once a guy gets..."HOT" and turned on if hes not going to get some, either wack at it or take a cold shower, because when cold water is hitting him getting some will be the last thing on his mind


Is there anything you can do to correct the problem of shower water changeing when kitchen water is turned on?

Yes, remove your old shower valve and fit a new Moen anti-scald valve. This will not change when other items are turned on.


Do women get turned on when they pee on their man in the shower?

Some might, but most wouldn't.


Why is there no water coming out of the shower head when it is turned on and there is water to the rest of the house?

the tap assebly could be cross connected if older shower set


Why is the water still running in the tub when the shower stem is turned fully in shower setting?

The valve is not be diverting all the water. This valve may need to be replaced.


Why do you see the sun 24 hours a day in the arctic?

Because the Earth is tilted so that the North Pole is turned toward the sun during the summer season.


What are the causes of seassons?

the way the axis is turned toward the sun determines the season


What is the elevation of land where de Soto turned toward the gulf of Mexico?

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