Low Friction Spinners | Punjabi
Channel: Arvind Gupta
Date: 2015-05-31

To make these low-friction spinners you will need a concave mirror, steel balls, a straw and some glue. Stick two steel balls with a strong adhesive. Let the glue dry and after placing them on the concave mirror give them a spin. Because of the very low friction between glass and steel this top will keep spinning for a very long time. Spin this top again and now blow from the side with a straw. This will make the top spin for a very-very long time. For more dramatic effect shine a laser beam from the top. It will be a visual treat. 
Instead of 2 balls you can stick four steel balls in the shape of a tetrahedron. On spinning the tetrahedron after a while it upturns and starts spinning on a single ball. Instead of steel balls you can make a tetrahedron by sticking four marbles. They spin well and upturn too. And if you shine a laser beam from top then the marbles glow like a light bulb. 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