Pencil Spinner |  Italian
Channel: Arvind Gupta
Date: 12/04/2017

The Pencil Spinner has quizzed scientists for over a hundred years.
You will pencil with rubber on one end, card sheet, refill and some tools.
Cut a 5-6 “V” shaped notches on the pencil.
Push a pin in a small rubber stopper.
Insert a card sheet fan in the pin. The fan should be free to rotate.
Insert the pin with the fan in the pencil rubber.
Now the spinner is ready to spin.
Take a ball pen refill and rub it hard on the notches.
The fan will surprisingly start rotating.
Replace the fan with a color disc.
As the Newton’s disc rotates all the seven colors will mix
And you will see a grayish white.

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

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

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

Dubbed in Italian by Anna Zanoli