EDDY CURRENT SLOWDOWN | Malayalam
Channel: Arvind Gupta
Date: 2016-04-15

This wonderful experiment demonstrates Eddy Currents. We need three pipes – PVC, other Aluminum and a Copper pipe. We also need a steel piece and a strong neodymium magnet. Here you can see the steel piece is attracted to the strong magnet. Then take three same length pipes – a PVC pipe used for electrical wiring. A thick walled Aluminum Pipe and a thick walled Copper Pipe – which is the most expensive.  Now hold the pipes together and drop the steel piece from each. Each time the steel piece will fall like a rock. Now take the strong neodymium magnet which will not stick to the PVC pipe. Drop the magnet from the PVC pipe and it will fall like a stone. Next drop the magnet from the thick Aluminum pipe. The magnet will fall slowly because of the Eddy currents and will take some time to come down. Lastly, drop the magnet from the thick Copper pipe. This time the Eddy currents produced will be large and they will slow the descent of the magnet and it will come down very slowly. Here in this top view you can see the magnet float down the Aluminum Pipe. Here you can see these girls performing this experiment and being enthralled by what they discover!

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

Credits:,Ashok Rupner, Manish Jain, Pradnya Pujari, Shivaji Mane, Jyoti Hiremath, Arvind Gupta, Vidula Mhaiskar

Dubbed in Malayalam by CK Biju, SNV Sanskrit HSS, Kochi 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