How to unscrew nut with Vibrator | English
Channel: Arvind Gupta
Date: 08/02/2015

Can you unscrew a nut without touching it? Perhaps with magical powers! An electric razor or toothbrush can help you unscrew the nut with physically touching it. 
You will need either an electric razor or a toothbrush – a machine that vibrates. Here you can see the toothbrush bristles vibrating. 
Now hold the screw at one end. Screw the nut halfway and touch the vibrating toothbrush to the screw. The nut will start to rotate. On touching the brush on the other side of the screw the nut will rotate in the opposite direction. 
This toy has similar principles to our other toy Paper Spinner. It is also called Gee-haw Whammy Diddle. Richard Feynman worked on the physics of this toy as a youngster. The science behind this toy is fairly complex. The screw starts to vibrate in a rotational manner. The friction of the screw with the nut converts these vibrations into rotational motion.
You can also unscrew the nut with the screw standing up against gravity. 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