Sridhar Nadiger

Dr Mokshagondam Visveswaraya gives the answer for difference between Smart work and hard work through a small assignment, The Construction of KRS Dam was going across River Kaveri in 1924. One day a labour came to visveswaraya and asked we will do so much hard work by working 10 hours a day and we will get only few pennies but you do visit the site only twice a week and you get huge amount why is so. Visveswaraya gently smiled and gave one small assignment to him. He gave two raw eggs and told him to make them  stand  one over the other. The labour took the eggs and tried so many ways to make them to stand, but he failed to make stand not even one egg then how he can make the two eggs to stand one over the other, then he said it is not possible. Then visveswaraya took one cylindrical ring and kept on the floor after that he placed the egg over it, definitely it will stand and he placed one more cylindrical ring over the first egg and he placed the second eg...

Once, during british times, visvesvaraya was traveling in a train. in half sleep, he became aware of something and jumped up and pulled the safety chain. the others in the train, mostly britishers, became irritated at him because he was perceived as one of the native nuts who did not know what the chain was for, etc. however when the guard arrived to check on who had pulled the chain, visvesvaraya explained to him that he'd pulled the chain because the tracks were broken some distance ahead. when questioned on how he would know, he explained that he had been idly doing some mental calculations on the frequency of different sounds that happened when the train was running on the tracks, and when he was doing this, he noticed a sudden alteration in the pattern, he did some quick calculations that gave a conclusion that the tracks had become discontinued some distance ahead.  of course, so when the check was done, it was discovered that the railway racks had broken down ...

Lilavati, the daughter of Bhaskaracharya, was destined to die a spinster. To avoid this fate, Bhaskaracharya predicted an auspicious moment for her wedding. To alert her at the right time, he nailed a small hole in a cup and allowed it to float in a vessel filled with water.   Curious as she was, she made her way up to thecup. As luck would have it, a pearl from her trousseau fell into the cup and upset its arrangement. The propitious moment thus passed, leaving Lilavati teary-eyed for the rest of her life. To help her come out of her grief,Bhaskaracharya granted her a second life in the form of a book in her name.Little did Lilavati know that the book would inspire generations ofmathematicians to carve a niche for themselves in the world of numbers. https://www.thebetterindia.com/72676/mathematics-lens-ancient-india-history/