Dr. Nabil Iqbal, me and SUST to learn Galileo and space time curve
In 2016, when I was just a student of sophomore year at Shahjalal University of Science & Technology (SUST), Dr. Nabil Iqbal and Dr. Yeshim Iqbal both visited to SUST. They are the off-springs of veteran profilic teacher Dr. Muhammed Zafar Iqbal and Dr. Yasmeen Haque. The reason I am introducing both them to here because recently I talked on forum named Trisduction about gravity where I shared my experience on Dr. Nabil intriguing talk.
The most amazing part of the talk was how Dr. Nabil made a relation of free fall bodies with the space time curve. I am going to discuss here that part. Now lets start with a 10th grade physics example, what would happen if someone let fall a ball freely from a roof-top of a tall building? Basic answer will be it will fall freely, and will follow a straight path, like the following.
In 10th grade physics, students has learnt about what will be relation between time and distance. One most important phenomena of the event is that it will follow a straight line if the axis are both “y” and “x”. Basically the trajectory that defines the relation between x and y axis will be straight line. But if we want to convert the x axis into time and y axis into space then what will be the graph? Actually answer is lied into Galileo Free Fall’s equations.
So when someone wants to draw the the free falling bodies equation then he will find a curvature basically it’s a quadratic equation.
After getting such explanation from Dr. Nabil, I was just amazed. What a talk it was. Btw I forgot to mention about Dr. Yeshim Iqbal had a talk about psychiatry effect of genocide on 71. Before visiting SUST, she arranged a survey to raise awareness about the tribunal and prosecution of 1971 war criminals. I took part in that survey in exchange of 100 tk (basically I was in bare hand, that 100 taka helped to take my lunch and dinner for two days). From that speech delivered by Yeshim, I realized how much sufferings had undergone through our liberators.
