Stick a series of small nails with wax on a hacksaw blade. Now heat one end of the hacksaw blade. As the blade heats up the wax will melt and the nails will drop in a sequence. This is a very good demonstration of simple conduction. http://www.arvindguptatoys.com/toys/simpleconduction.html 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 t