PULL PLUNGERS | Bengali
Channel: Arvind Gupta
Date: 2015-11-26

This experiment demonstrates the power of vacuum. You will require two Sanitary Rubber Plungers used for cleaning drains. Place two such plungers mouth-to-mouth and press them. This will LOCK the two plungers together. If you hold the two handles and pull the plungers out, they will be locked so tightly that it will be virtually impossible to separate them. This person is trying hard to separate them without success. Here are children pulling them out but not succeeding. This is because there is vacuum inside the two cups. This demonstrates the power of vacuum. Now take two Flexi-Suction Cups which are normally affixed to a mirror or a glass pane. Place them mouth-to-mouth and then press them to remove all the air. Now try to pull them apart. No matter how hard you try it would be very difficult to separate them. This once again demonstrates the power of vacuum. Give these cups to a child and he will find it very difficult to separate the cups!

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