Today, Prof. S.P. Gupta gave a talk along with power-point presentation to the students of class 11 (Sci) students.
The topic  ‘Balloon and Rocket borne experiments for space researches’. 
The main topics of discussion were
1) Time of launching of balloons
2) Electrical properties of different regions of atmosphere – precisely ionosphere
3) Different techniques
4) Balloon borne techniques
5) Integration and launching of balloons and rocket payloads

After the talk there was a question-answer session where the professor answered students' queries.