When you let this card sheet bird go off a taut thread it comes down in short funny jerks. The bird falls because of its weight but the friction between the refill and the thread slows it. So you see the short jerky movement. Add paper clips to make the bird heavier and it will descend slowly.
http://www.arvindguptatoys.com/toys/Shimmeringbird.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 t
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