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A Story of Persistent Village Lad

Haunted pavement of Ulsan National Institute of Technology during COVID-19  A short story, taken from the web source. I have expressed it in my own way. O nce upon a time,   Indra ( the God of heaven) got angry with the villagers. So he cursed the villagers and stated that - there will be no rain for another 12 years in their land.  Interestingly, he also mentioned that the curse can be removed if Lord Shiva plays his damru . So all the villagers went to Kailash and tried to convince Lord Shiva, but he didn’t listen to the villagers, as Lord Shiva was already informed by the Indra . Then all the villagers lost hope and returned to their home. They started facing the harsh situation of starvation. But there was one in the village named Aarav who was ploughing land, seeing him other people from the village started laughing. The villagers started mocking him, they say him stupid because he was working despite of being aware that his efforts will be futile without th...

Depinning of Evaporating Sessile Droplet

Schematic of drying sessile droplet of comprising particles In this article, the derivation for the depinning time associated with the sessile drop evaporating on a substrate and maintained at different temperatures is illustrated. The derivation goes below -     The droplet evaporating at dissimilar rates are observed to depin nearly at the same scaled time $t/t_f$ (where $t_f$ is the time for complete evaporation). The argument can be supported by a rudimentary mathematical framework illustrated below: \begin{equation}    \frac{dV}{dt}|_{\Delta T} = -V_E|_{\Delta T} \end{equation} where, $V$ is the instantaneous volume of water in the droplet, $V_E$ is the evaporation rate which is a constant at the particular $\Delta T $ (difference of substrate and environment temperature), the negative sign at r.h.s indicates the reduction in volume with time. Now by integrating Eq(1), \begin{equation}   V(t)|_{\Delta T} = -t\,V_E|_{\Delta T}...

Dare to do Mistakes

As the title suggests, the subject is bit philosophical, but still, I thought to pen it down in my blog. For me, every day is a new day with a new experience in all aspects either be personal or professional.  At the end of the day, before I sleep, I always have many unanswered questions that keep my mind very much engaged. A novel profession like that of scientists gives me the opportunity to think, discuss and debate. Although I find this profession too challenging and lively but very often I do get into a very difficult state, which is a state of confusion and fear. The question that I have to face on a regular basis are, 1. What and Why should I do something today? 2.  Is this the right way to do it? 3. What will happen if I fail? Are there any alternative? Do I have any backup? and many more... Although I am not very qualified to write a blog on such a topic but still believe myself as a novice researcher eligible for sharing the experience. At the moment, I believ...

Are We Active Matter?

The very first thing that we learn in biology is about the Cell. So what is Cell?   Here is the definition that is given in Wikipedia. "The cell (from Latin cella , meaning "small room" [1] ) is the basic structural, functional, and biological unit of all known organisms" Now, the next question that comes in our mind is what makes it?  The cell consists of cytoplasm and comprises several subcellular organelles such as mitochondria,  Golgi body, vacuoles and many more.  Now next,  what makes cytoplasm or these organelles? Well, again the answer is known. They are made of biological molecules such as proteins and nucleic acids (Wikipedia).  We can further move on and ask, what biological molecules comprise of?  Again here is the answer from web source - the biological molecules comprise several elements mostly carbon and its derivative.  Like this, we can go on and we will certainly reach the atom and then down to the ...