BOTTLE and COIN PUMP | Bengali
Channel: Arvind Gupta
Date: 2015-12-01

This is an amazing Squeeze Pump. You will need a 200-ml plastic bottle, a coin, tape and a scissors. Make a hole in the bottle lid with the help of the scissors. Place a small coin in the lid to cover the hole. Make a hole near the base of the bottle. Take a length of sticky tape. The silver side is sticky and the blue side is non-sticky. Stick part of the tape on itself. Stick the tape to the bottle such that the non-sticky part covers the hole. The sticky-tape flap can OPEN and CLOSE like a VALVE. If you blow-in the bottle the flap will LIFT up. On sucking the flap will shut. Finally screw the lid to the bottle along with the coin. Now the pump is ready for operation. 
Place the bottle in a mug of color water and squeeze the bottle a couple of times. Slowly the pump will be primed-up. Once the bottle is filled with water, on squeezing the bottle the water will eject out with great force. Large quantities of water will come out of this simple Squeeze Pump.

This work is supported by IUCAA (www.iucaa.ernet.in) and TATA Trust (www.tata.com/aboutus/sub_index/Tata-trusts)

Credits:,Ashok Rupner, Shivaji Mane, Jyoti Hiremath, Arvind Gupta, Vidula Mhaiskar, Pratham, Krishnanjan Mondal 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