Topics from November 2017 When was the first balloon flight made? Posted by Keshav Jain on Wednesday, November 1. 2017 What are Dr. S. Chandrasekhar’s contributions to astrophysics? Posted by Keshav Jain on Wednesday, November 1. 2017 What were Ramanujan’s contributions to mathematics? Posted by Keshav Jain on Wednesday, November 1. 2017 Who was Pythagorus? Posted by Keshav Jain on Wednesday, November 1. 2017 Who invented Seismograph? Posted by Keshav Jain on Wednesday, November 1. 2017 Who discovered neutrons? Posted by Keshav Jain on Wednesday, November 1. 2017