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Sun 19 Aug, 2007 11:48 am
Hi. I have a project for my high school physics class. My teacher made a machine that he says "streaches water". Well, we all know that you can't stretch water. But he made a machine that can. He put about a water bottle size amount of water in his machine. The machine was made of a large pbcpipe with a funnel out of the top. He would pour the water into the funnel and about half way down the funnel there was a clear tube that looped out into a flask. When he was done, he had tripled the amount of water that he oirginally put in. My project is to make a machine that will atleast double the amount of water I put in. The least is double, the most is triple. I am very stuck. I don't know where or how to begin. Please help me!
Well, you can't actually double the amount of water, as you stated. It sounds like the answer has to rely on an optical illusion.
And you're taking physics, right? Not magic?
The key word here is "amount"... a term that has not been defined. If I were a physics teacher, this might be the key to a lesson that might take this form.
When you say the amount doubled... what exactly do you mean? How was this measured?
ebrown_p wrote:The key word here is "amount"... a term that has not been defined. If I were a physics teacher, this might be the key to a lesson that might take this form.
When you say the amount doubled... what exactly do you mean? How was this measured?
no.. really. he showed us. he put in .5L water and got 1L water out. he even hinted that there is more water in the machine. i think it has something to do with pressure or water displacement or something.
funnel at top. PVC pipe as body, with aquarium tubing out of a hole in the side. its the inner workings that matter, apparently...
Well, water doesn't really compress very well, and noone could ask you to do it as a student.
I agree... there must be more water hidden somewhere.
I am thinking
Siphon... but you will have to describe a bit better to confirm my suspicion.
I assume there was a place under the funnel where the extra water could be hidden.
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