To mark the National Science Day on February 28, Thursday, an ‘open day’ exhibition has been organised by the Science Park department at Savitribai Phule Pune University (SPPU) campus. Atleast 150 scientific models will be at display at the exhibition, including one on butterflies of the Western Ghats that I taught two girls to create. The exhibit is in the form of a Calder mobile with two arms. The biggest butterfly is the size of an A4 paper (roughly 8.5" by 11").

Exhibit Venue: First floor, Science Park department, Environmental Science department building, SPPU
Date: Thursday February 28, 2020
Time: 10:30 am to 5 pm

Recently I made a mobile whose design incorporated the very difficult art of vertical balancing.

Afterwards I reached different conclusions. First, vertical balance has no value for an average viewer. Even when it is pointed out, he does not appreciate it. So 3 out of 7 nodes of my mobile were not adding any value to the average viewer.

The balance four were just not moving relative to each other. but were rotating in a plane. Very boring movement with no re-carving of space.

I have been making various sorts of mobiles for over 35 years now.

I learnt the art of balancing forks and spoons over the edges of cups and glasses at home.

When I was living as a bachelor in Calcutta, I found a book on Calder's mobiles at one of the book fairs there. Reading that book, I got more seriously into making mobiles.

My understanding of his mobiles has increased greatly nowadays.

Previously, there was a class of mobiles that he made where the parts did not have freedom to move in relationship to each other.