Adventures of a Physics Nerd

 ১. ব্যাক্তির অপরাধের দায় কখনোই সংগঠন নিবে না কারণ আমাদের আইনি প্রক্রিয়া এভাবে চলে না। কিন্তু যদি একটা সংগঠন এর অনেক সদস্য কোন নির্দিষ্ট অপরাধে যুক্ত থাকে তাহলে এটা নিয়ে আলোচনা উঠতে বাধ্য। তবে এই আলোচনা কে থামিয়ে দিয়ে উক্ত সংগঠন এর প্রতি অযৌক্তিক সমর্থন দেওয়াটা গ্রহণযোগ্য নয়। আর এটা যারা করছেন তাদের উদ্দেশ্য যে খুব সৎ নয়, সেটাও বলাই বাহুল্য  ২. এই পূজার ছুটিতে Condensed Matter Physics নিয়ে পড়াশোনা আরেক্টূ আগিয়ে নিয়েছি। এখন যেই বই/আর্টিকেল গুলো পড়ছি সেগুলা হলঃ    Why More Is Different ( Philosophical Issues in Condensed Matter Physics and Complex Systems) বইটাতে emergence এবং reductionism এর মত বিষয় গুলো নিয়ে সমসাময়িক আলোচনা করা হয়েছে Quantum Noise by Zoller and Gardiner এই বইটা আমি কিছুদিন আগে Quantum Thermodynamics এর উপর যে স্কুল এ অংশগ্রহন করেছিলাম সেটাতে সাজেসটেড ছিল। এখন বইটা থেকে Quantum Langevin equation নিয়ে পড়াশোনা করছি।  ৩. গত পরশু থেকে Community of Physics এর একটা ওয়ার্কশপ শুরু হইছে। ওয়ারকশপ এ অংশগ্রহন করতে প্রচুর মানুষ এপ্লাই করলেও নিয়মিত ক্লাস ৩০ জ...

This past week has been hectic. My sophomore year has brought up a lot of academic pressure on me. I am still trying to maintain a proper balance. But, still I am doing a number of stuff alongside my academic studies.  On the first class of our Stat-201 course, my fellow Omar asked an interesting question. It's something like this: Suppose, you have a population of 1000 individuals and then you take samples of 100 for some statistical enquiry; how would the results differ if you take 2 samples of 100 individuals first replacing and then not replacing? I think if the population has a symmetric Gaussian distribution, then maybe two sampling methods would hardly show any difference. But, what about skewed distributions? I am trying to write a C++ code to conduct the experiment in this case. But, I am stuck in a part. I will try again later. Last Friday night, I was solving HW problem of CP's classical mechanics course. And for this I had to study the beaded stri...

Newton was right, as I know it from experience. A few incidents have changed my mindset radically. One of them happened in BDPhO 2016 Dhaka regional.   I found interest in math and physics since my secondary school days. Actually, may be I was fond of these subjects because it took a lot less effort to score good in them. And, maybe because once any topic was understood, I didn't forget it. But, there was one problem. I was a passive learner. I only wandered in a limited region of the vast sea of knowledge. If I could understand a certain portion of the theory, it was OK for me. I never wanted to find out what's beyond the horizon of my comfort zone. I considered the ability of developing a scientific thought as a divine skill, then. Most of secondary school days were in a small town high school. So, there was no sign of math or physics Olympiad anywhere around. So, I was a frog living in a well, delighted under the illusion that I had good cover over phy...

As an undergrad student of physics, I have been studying mathematics rigorously from the first days of my freshman year. Here is a list of books that I have been studying lately to develop my mathematical background: Vector Calculus by Susan Jane Colley Vector calculus is a mathematical tool that a physicist uses on a daily basis. The branches of physics where vector calculus is used are a lot in number; classical mechanics, classical electromagnetism, fluid mechanics, classical field theory- to name a few. And it’s an prerequisite to learn differential geometry. I have been studying vector calculus for some time. And Susan Jane Colley’s has been quite a nice guide to learning vector calculus. What I love about the book is that it’s emphasis on rigorous development of the subject while still not very dry to study. And it contains lots of nice problems to test one mathematical understanding; especially the miscellaneous problems at the end of the chapter amalgamat...

I started learning differential geometry without a sound base on calculus. Here's what happened afterwards. I was solving a problem on vector calculus from Lovett's  Differential Geometry of Curves and Surfaces . It involved solving a first order ODE but at first there was a square of the first derivative. All I had to do is take the square root of both sides and solve a very easy first order ODE. But, what I did was both funny and nonsense. I treated the square of the first derivative as a 2nd derivative and started solving a 2nd order ODE. To add more to the irony I sent the solution to a graduate student for feedback. Thus, the quote on the picture of the heading was born. And then he sent me a long reply on why should I study calculus with great rigor and details for a long time. I became agitated as I took it as an insult. I didn't think there was anything left for me to learn in "elementary" calculus and/or analysis. All the high sch...

How my mother died I remember how I lied about the cause of my mother’s death during my teenage. Every time someone had asked about it, I would say “ Brain Stroke ” or “ Stroke ” or something else. I contradicted myself several times while doing it. My father had forbidden me to tell anyone the real cause. So, I lied again and again. I knew no one was going to take it in a human way- or at least past experiences suggested so. Maybe it is the time, I opened up about it as I know I am just helping a taboo by not doing so. My mother suffered from a mental condition called Schizophrenia. Many times I saw her talking with herself. I couldn’t understand then, but now I understand how she suffered from hallucination, loneliness and depression. Life was hard for her, and I hardly could understand that. All the obsessions, the pressure of handling a family was killing her inside. So, in 2005 she decided to hang herself. I still remember that day. I was wa...