Straw Bottle Siphon | Kannada
Channel: Arvind Gupta
Date: 2015-02-18

This is an amazing magical trick and feels like lifting the water against the gravity. Straw Bottle Siphon and to make this you need a plastic bottle, bendable straws, glue, scissors and tape.  First make a small hole at the bottom and top of the bottle. Now insert the bent straw at the bottom of the bottle. Bend the straw along the length of the bottle and secure it with a tape. Siphons basically work on the principle of conservation of energy. They can lift the liquid above the reservoir. Our reservoir is a glass full of water. It will lift the water from this glass up inside the bottle and then out to the ground. Insert another straw in the lid f the bottle and seal both the holes with glue. And the siphon is ready. We just need a glass full of colored water. Pour a little water in the bottle close the lid and invert the bottle so that side straw goes inside the glass. Now you can see the colored water from the glass is flowing up inside the bottle and then out in the ground. Net flow of the water is from the glass which is at a higher level to the ground. If you close the straw the water stops. As soon as you open the fountain starts again and if you notice closely water starts flowing down to ground as soon as the water from the straw above comes out. It does not wait for the water to dome down completely in the bottle. 
Hope you will enjoy making and playing with this amazing siphon. This work was supported by IUCAA and Tata Trust. This film was made by Ashok Rupner TATA Trust: Education is one of the key focus areas for Tata Trusts, aiming towards enabling access of quality education to the underprivileged population in India. To facilitate quality in teaching and learning of Science education through workshops, capacity building and resource creation, Tata Trusts have been supporting Muktangan Vigyan Shodhika (MVS), IUCAA's Children’s Science Centre, since inception. To know more about other initiatives of Tata Trusts, please visit www.tatatrusts.org