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Is there a way to stop the flow of water on this water clock?

by Moedangel
Tags: clock, flow, stop, water
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Moedangel
#1
Jul7-14, 06:43 PM
P: 2
The one in question: https://www.youtube.com/watch?v=0T2uYgreTR0

Hello, I currently have to build a timer for my high school physics class. I plan on using a very similar design structure as shown in the video. However, I would like to know if there is a mechanism/modification I can do to this so that I can stop/greatly reduce the flow of water by pulling/twisting/switching something. My goal is to make this device acts more like a stopwatch than a timer.

Currently, I'm thinking the best way to do it is to somehow block the flow of air from one of the tubes so that the water slows down to a drip. I'm having a hard time figuring out how to do it though.

Any help/advice would be greatly appreciated. And sorry if this is the wrong category to post in, I'm new to this forum and this category seemed to fit best. Thanks again!
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elegysix
#2
Jul8-14, 09:43 PM
P: 316
I think the easiest way to do that would be to leave space between the bottle caps, so that the straw/tube is exposed. Then you can pinch it with something like a clothespin to make it stop.


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