CD Spectroscope | English
Channel: Arvind Gupta
Date: 2016-06-18

This simple CD spectroscope has been designed by Prof Ashworth of South Africa. You need an old CD, printout on an A-4 size card sheet, scissors and glue. The dimensions of the box are given in this diagram. Cut two squares on one end and also cut along the dotted lines. Then cut a long slit in the paper. The CD will be inserted through this slit. Also cut a small rectangular slit and a circular window for viewing. Now gently crease all the lines and then fold the card sheet to make a small rectangular box. Glue all flaps to the sides to complete the box. The rectangular slit is for the incoming light. The circular window is for viewing. Finally insert an old CD into the long slit. Ensure that the shiny part of the CD faces down. What you see is the white surface of the CD. Now the Spectroscope is ready. Place your eye on the circular window and lower and raise the box. At one point you will see a most SPECTACULAR SPECTRUM. The fine etchings on the CD, act like a Diffraction Grating and refract sunlight into a beautiful spectrum.

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 Urdu by Ishrat Shaik from Pratham's Science Learning Program 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