SCIENCE LECTURE SERIES 17 – 20 APRIL
17th April - Dr. Manisha Khaladkar & her student Mihir Paranjape (The journey of COEP’s Nanosatellite Swayam)
Dr. Manisha Khaladkar & her student Mihir Paranjape (The journey of COEP’s Nanosatellite Swayam) lecture was organized. Dr. Khaladkar through PPT explained in details how the nano satellite swayam was developed. The idea was initiated at COEP in 2008 to build this satellite. 176 students worked over eight years to build this 990 gm satellite. She explained the extreme time bound programs, challenges that had to be undergone to ultimately build this nano satellite. She described the formal organizational structure built to accomplish this goal. She spoke on her role in mentoring the various category students, who worked tirelessly to achieve this goal. She talked about how students learnt team work as well how to inter-act with different governmental organizations, scientists, technologists etc. in the process of building up this satellite. She spoke about ISRO’s crucial role in launching this satellite, how the ISRO standards were met with in fabricating this satellite. She elaborated the various stages of launching this satellite by ISRO through the rocket PSLV C 34 in 515 km orbit on 22nd June 2016, the passive stability of the satellite, the post launch contact with the satellite through ground stations developed by COEP. She explained the role of HAM radio beacon which is the mode of establishing contact with this satellite. The satellite is successfully functioning and is tracked by various ground stations throughout the globe like US, Brazil, Japan etc..
Dr Khaladkar’s student Mihir Paranjape also gave his PPT on this subject. He talked on the technical points of this nano satellite. He described the various systems like sub-systems, structure, altitude control, on board computers, beacon monitoring, power systems, orbit maneuvering, solar sails etc.. of this satellite. He also outlined the next project of building 2nd nano - satellite on which the team is working. This satellite is proposed to be launched in 800 -1500 kms using thrusters. He also explained how he learnt the intricacies of building of this successful satellite.
Dr. Khaladkar concluded the lecture by explaining the different aspects, constraints, opportunities that a mentor comes across in guiding the students towards their goal of satellite building.
18th April - Amateur Ham Radio (Celebrating World Ham Radio Day)
Shri Vilas Rabde delivered his lecture on topic Amateur Ham Radio. He explained how Ham Radio is very useful in the event of any natural calamities like earthquake, floods, which cause total disruption in the normal communication channels. He traced the historical growth of HAM Radio dating back to 1895, where J C Bose was first to develop Ham Radio frequency communication. The other three pioneers in Ham radio were Hertz, Armstrong, Marconi after whom was coined the word HAM. He described total number of licensed HAM radio operators to be only 18000 in India as compared to Japan – 15 lac, USA – 7 lacs. He elaborated on how Ham Shack is developed at each Ham operators place. He talked about Morse code beacons, which is the heart of Ham radio communication. He also encouraged the young students, people at large to pursue learning and use of Ham Radio. He through PPT explained the detailed aspects, terminology used, phonetics, call signs, list of equipments of HAM Radio. Etc.. There was good response to his lecture. The students also practically communicated with other people through Ham radio in this lecture.
19th April – Robotic Surgery by Dr. Shailesh Puntambekar
Dr. Shailesh renowned Robotic surgeon delivered his lecture on Robotic surgery. Through PPT he unfolded the fascinating aspects of robotic surgery. He traced the history of robotic surgery to 14 Century A.D. where Da Vinci had predicted that surgery would be carried in future by robot. Robot literally meaning slave. The first robot through whom surgery was performed in 1997 on humans was named Da Vinci robot. Dr Puntambekar described the different types of surgeries that are done through Robot surgery, except child delivery, all surgeries can be undertaken through robotic surgery. He enumerated the benefits of robotic surgery like there is least loss of blood, there is higher precision, less painful and quick recovery for the patients. Robotic surgery can be performed crossing national borders. E.g. robotic surgeon can sit in India and perform robotic surgery of patient in US hospital. A surgeon can also perform multiple operations simultaneously. He described in brief how robotic surgery is performed by robotic surgeon. 3 – D imaging is done of patients’ organ on which surgery is to be performed. The surgeon uses his finger movements with help of computer technology, remotely guiding the robot to insert his arms in the organ and perform surgery as per directions of the robotic surgeon. The sister helps in inserting robot arms in the organs to be operated. Dr Puntambekar also explained the future role of robot surgery. In spite of the various technology breakthroughs in medical field, he emphasized the indispensible role of teacher in imparting knowledge in medical profession also.
20th April – Science in Music – Dr. Prakash Jog and Jal Tarang performance by Shri Milind Tulankar
Dr. Prakash Jog through PPT explained the science behind music- vocal, instrumental. He spoke about the intricacies of sound – sound as form of energy, sine wave, frequency, longitudinal characteristics of sound waves, the pitch, intensity, tonal quality, octaves of sound in different musical instruments like harmonium, guitar, tabla, how the tone of sound differs in each instrument, from person to person etc.. He further explained the additional harmonics generated, the micro tonal aspects of sounds, how raga is evolved. He thus gave a very deep and meaningful insight into the various aspects of science in music.
The lecture was followed by enthralling performance of Jal Tarang by Shri Milind Tulankar. Shri Tulankar gave brief historical review of the evolution of Jal Tarang musical instrument. The instrument was built in 10th Century in China. Currently the bowls used in Jal Tarang are made of china ceramic material. Shri Tulankar played some songs, raga Puriya Dhanashri, folk songs, tunes etc.. The audience was spell bound hearing this performance. It was a brilliant musical experience for the participants.
There was very good response to the four day science lecture series, the ground was seated to capacity. The entire science lecture series turned out to be very memorable for all participants.