Toys, Geim and Gupta

Recently I came across an editorial in Nature Physics, titled as Physics is our playground, which emphasized how playfulness has had an important role in some of the major inventions and discoveries in physics.

A particular example of this is the discovery of graphene, and how it has evolved into one of the most important topics in condensed matter science. Nowadays graphene is used as ‘Lego’ blocks to build higher order structures and the so-called ‘Van der Walls’ heterostructures are one of the most exciting applications of 2D materials. What started as a playful project in the lab has now turned out to be an important part of emerging technologies.

Two important inferences can be drawn from the playful attitude towards doing science :

First is that making modular elements and stacking them creatively can lead to emergence of new structures and function. Anyone who has used lego blocks can immediately relate to it.

Second is that toys are powerful research and teaching aids. Please note, that I emphasized research and teaching here. This is because toy-models are ubiquitous in research, and they help us create modular state of a problem in which unnecessary details are discarded and only the essential parts are retained. This way of thinking has been extremely powerful in science and technology (for example : see ball and stick models in chemistry and mega-construction models in civil engineering )

When it comes to toys and education, there is no better example than the remarkable Arvind Gupta (see his TED talk). His philosophy of using toys as thinking aids is very inspiring. Being in Pune, I have had a few opportunities to attend his talks and interact with him (as part of an event at science activity center at IISER-Pune), and I found his approach both refreshing and implementable. Importantly, it also showed me how creativity can emerge from constraints. To re-emphasize this, let me quote APS news article on Andre Geim :

“Geim has said that his predominant research strategy is to use whatever research facilities are available to him and try to do something new with the equipment at hand. He calls this his “Lego doctrine”: “You have all these different pieces and you have to build something based strictly on the pieces you’ve got.””

Now this is an effective research strategy for experiments in India !

Chomsky et al., on Chatgpt

Chomsky et al., have some very interesting linguistic and philosophical points on chatGPT/AI and their variants (see NYT link).

To quote


“The human mind is not, like ChatGPT and its ilk, a lumbering statistical engine for pattern matching, gorging on hundreds of terabytes of data and extrapolating the most likely conversational response or most probable answer to a scientific question. On the contrary, the human mind is a surprisingly efficient and even elegant system that operates with small amounts of information; it seeks not to infer brute correlations among data points but to create explanations.”

The philosophical and ethical viewpoints expressed in this article are indeed noteworthy. What probably is even more important is the linguistic viewpoint which amalgamates language with human thought process, and that is what makes this article more interesting and unique.

My own take on Chatgpt has been ambivalent because I do see tremendous potential, but also some obvious faults in it. About a couple of months ago, I did try to play around with it, especially in the context of some obvious questions I had on optical forces, and the answers I got were far from satisfactory. At that time, I assumed that the algorithm had some work to do, and it was probably in the process of learning and getting better. The situation has not changed for better, and I do see some major flaws even now. Chomsky’s article highlighted the linguistic aspects which I had not come across in any other arguments against artificial intelligence-based answer generators, and there is some more food for thought here.

This is indeed an exciting time for machine learning-based approaches to train artificial thought process, but the question remains whether that process of thought can somehow emulate the capabilities of a human mind. 

As humans, a part of us want to see this achievement, and a part of us do not want this to happen. Can an artificial intelligence system have such a dilemma?

Basic advice to undergrads: written assignments

Below is some basic advice I shared with my undergraduate class (Physics majors/Optics). This may be useful to other students here.

  • Do not copy a text verbatim, unless you are quoting the text as it is, with reference at that location.  If you use a source, then write a summary in your own words and cite the original source at the location of your text.
  • In the absence of primary data (which you generate originally), you will be using secondary sources such as research papers, books and internet content. For scholarly purposes (including assignments), it is better to use journal articles and books as references. Wikipedia is essentially a tertiary reference. Although some entries are good, wikipedia content is generally taken from a book or a research paper. Identify that source and use it for your assignment and reference. Directly citing wikipedia (which is usually not peer reviewed by experts) is not a general practice in scientific literature. 
  • When you take a figure or equation from a secondary resource (paper, book, internet), it is important that you cite the source in figure caption/equation location.
  • In an assignment, I am mainly interested in reading what you think about the topic under consideration. Feel free to put down your thoughts and compare and contrast it to the literature you use. This is where the thinking + learning happens.
  • For some general advice on referencing, especially for online communication, have a look at my blogpost.
  • To appreciate importance of written communication in learning, have a look at another blogpost.

12 Years as a faculty member in India – 12 lessons

Today I complete 12 years as a faculty member at IISER-Pune. I have attempted to put together a list of some lessons that I have learnt so far. A disclaimer to note is that this list is by no means a comprehensive one, but a text of self-reflection from my viewpoint on Indian academia. Of course, I write this in my personal capacity. So here is it..

  1. People first, infrastructure next – As an experimental physicist, people and infrastructure at working place are of paramount importance. When I am forced to prioritize between them, I have chosen people over infrastructure. I am extremely fortunate to have worked with and continue to work with excellent students, faculty colleagues, and admin staff members. I think a good work place is mainly defined by the people who occupy it. I am no way neglecting the role of infrastructure in academia, especially in a country like India, but people have a greater impact in academic life than infrastructure.
  2. Create internal standards – In academia, whether you like it or not, there will be evaluations and judgments on your research and teaching. Generally, every academic ecosystem has its own standards for evaluating people. These standards are generalized principles and are not customized to an individual. Therefore, it was important for me to realize what good work meant and how to judge myself. As long as internal standards are high, and are properly met with consistency, the external evaluation becomes secondary. This attitude totally frees up the mind, and helps me to get better compared to my previous self. This also means I can appreciate others work without having to compare myself to them.
  3. Constancy and Moderation – When it comes to any work, it is important to be consistent over a long period of time. An equally important aspect is to moderate the amount of work done for a period. Most of the important work in research happens in units of months if not years. Therefore, constant effort with moderation keeps the motivation high, and makes the work enjoyable. Binge-working is attractive, but for intellectual work it is ineffective.
  4. Writing is a great tool to think – One of the most underestimated tools of thinking is writing. Not just formal writing, but the process of external articulation of thought on paper does wonders. Countless times, I have obtained, clarified and developed my thoughts only after I started writing about it. Writing is integral part of research and not just a communication tool.
  5. Importance of philosophy – Ever since I was an undergrad, I have been interested in philosophy of science. I had never taken a formal course on philosophy, but I have gradually started appreciating the role of philosophy of science. Specifically, it has catered to my question on ‘why I do what I do?’
  6. Teaching as social responsibility – In the Indian academia, scientific social responsibility is a buzz word. For me, the greatest social responsibility as an academic comes in the form of teaching. In larger scheme of things, some how we tend to neglect the impact of conventional teaching on students. Also, this impact is not easily measured. But the joy one obtains seeing a student do well is priceless. This local impact is what I value more because the feedback is there to see, right in front of you.
  7. Science, sports and arts : a trinity – I love outdoor sports including running, swimming, cricket etc. Equally, I enjoy listening to music, reading poetry and appreciating any form of art from any culture. I have found that it has not only made me a better person, but also has positively impacted my work. Taken as a trinity, these human endeavours continue to enrich our lives.
  8. Emphasis on mental and physical health – The most important policy that I have set in my research group is this: To do effective and enjoyable work, your mental and physical health should be good. There is no point in doing good work at the expense of your health. Therefore the priority will always be good health followed by good work.
  9. Social media : effective if used properly – Social media has a unique reach. If you are in India, and you want to connect to the scientific world, social media is an excellent platform. Given the size and diversity of India, social media can also reach people from various backgrounds and languages. If used responsibly, social media can have great impact on how science is communicated within India and how India connects to the scientific world.
  10. Renewed interest in applied mathematics and coding – During my BSc (Maths, Physics, Electronics) and MSc (Physics), I had excellent training and exposure in mathematics. During the lock-down period, I rejuvenated my interest in applied mathematics (especially nonlinear dynamics) and have started coding too. This has added a new impetus to my research and should reflect in the coming years.
  11. Professor as a post-doc – A research strategy I found useful in my work is to treat myself as a post-doc in the lab. Given that, in India retaining a long-term post-doc is difficult, many of the skills and thought processes cannot be effectively transferred in lab. A long term research problem needs sustained effort in the lab. As an experimental faculty it is easy to get caught up in activities outside the lab and lose touch with the (optical) bench work. Thanks to the lock-down period, I was the only one in the lab for almost 6 months,and I restarted my experimental work. I value that time and I see great benefit in this approach.
  12. Self-mentoring – A lot of academic advice is written by people working in the west. A few of them are general and applicable to Indian academia, but many of them are not. In such a situation, as an academic I try to derive inspiration by reading, especially about people who have done great work in India. I have been deeply influenced by people such as M. Visvesvaraya and Ashoke Sen. 

Scientific Philosophy and Mental Health

Many a times, we are oblivious to the impact that Science has on an individual mind. It gets drowned in the collective impact. Curiosity is probably the most natural feeling of humans. If done right, Science cultivates and elevates this feeling. It may positively impact mental well-being too.

Increasingly, in Indian academia, mental well-being of all the stakeholders (students, faculty, admin etc.,) has emerged as an urgent and important issue that needs attention. Especially in a country such as India, where a loose order emerges out of chaos in almost all aspects of life, it is important to stay connected with oneself. Scientific curiosity may cater to this vital need.

The connection with oneself via science, or broadly speaking with any form of curiosity (arts/sports), is something we must harness. A major part of human development is to connect with oneself AND with the society. In this age of social media, sometimes, we may forget the former and focus only on the later. We will have to remind ourselves that being curious about anything is not being ‘childish’ but being human. Scientific curiosity and questioning is fundamental to our living, and this affects everything we do in our life.

To conclude let me quote from Bertrand Russell’s The Value of Philosophy :

Philosophy is to be studied, not for the sake of any definite answers to its questions, since no definite answers can, as a rule, be known to be true, but rather for the sake of the questions themselves; because these questions enlarge our conception of what is possible, enrich our intellectual imagination, and diminish the dogmatic assurance which closes the mind against speculation; but above all because, through the greatness of the universe which philosophy contemplates, the mind also is rendered great, and becomes capable of that union with the universe which constitutes its highest good.”

Science as in philosophy, does cater to the highest good of humanity. What we under-appreciate is that it goes beyond the call, and impacts an individual’s mind. Academia should be a place to foster such an impact at various levels: individual, local and global. Perhaps that is the meaning of an “University”.

Talks on C.V. Raman – YouTube links

Below are the YouTube links to the 2 talks I gave on C.V. Raman on the occasion of India’s Science Day

The first talk is about : C.V. Raman: A brief History

Organized by IISER Pune Science Activity Centre
Age group 6 to 100: Students, Teachers, Science Enthusiasts and all Members of the Public

The second talk is about : C. V. Raman : History of Ideas

Organized by Science Club IISER Pune

Target audience: Science students and researchers

Connection between science and empathy

Apart from ideas, and the utilitarian, materialistic benefits,what can science offer to the society? This is a question I repeatedly ask myself in understanding a related question: ‘why I do what I do?’. This question, in my opinion, is also at the heart of social relevance of the pursuit of science.

A vital aspect which scientific research can indirectly teach and train its practitioners and its beneficiaries is the ability to empathize.

Empathy towards a fellow living creature, and not just human beings, requires oneself to suspend ones ego and understand something from a different perspective. This act needs patience, and the result is almost always enriching.

A quote (mis?)attributed to Plato puts it succinctly:

The highest form of knowledge is empathy, for it requires us to suspend our egos and live in another’s world. It requires profound purpose larger than the self.”

One of the interesting aspects of scientific research is to study an idea or an object of interest from various different viewpoints. This ability to look at a particular thing from various conceptual angles enriches the understanding, and concomitantly clarifies the purpose.

Many a times one would be able to obtain an unexpected insight by looking at something from a different viewpoint.

The pursuit and the spirit of scientific enquiry essentially requires the same attributes as empathy, and hence the connection.

It is astonishing fact that we are witnessing a war among human beings in this day and age. Human beings are the most dominant creatures of our planet. This domination has already caused a severe problem in the form of climate change, and has drastically affected our own well being. War is the last thing you want at any circumstance.

If we have to overcome these problems,  we cannot ignore science or empathy. In an essense, ignoring them is like reversing the benefits of human intellectual evolution.

We humans can do far better than this…

Raman and Science Day



Raman was an extraordinary scientist, great communicator of science, and a very interesting human being with strong opinions and independent thought…. his scientific journey is an ‘audacity of hope’. His human endeavour.. from Bowbazar to Bengaluru..is what makes Raman what he is…and what he will be remembered for..

Raman’s work was deeply influenced by many great classical thinkers, and Euclid was one of them. To quote Raman

“Not until many years later did I appreciate the central position of geometry to all natural knowledge. I can give a thousand examples. Every mineral found in Nature, every crystal made by man, every leaf, flower or fruit that we see growing, every living thing from the smallest to the largest that walks on earth, flies in the air or swims in the waters or lives deep down on the ocean floor, speaks aloud of the fundamental role of geometry in Nature. The pages of Euclid are like the opening bars in the Grand Opera of Nature’s great drama. They lift the veil and show to our vision a glimpse of the vast world of natural knowledge awaiting study.”

To know more, you may want to attend the announced talks..

Happy Science Day !

Announcement: my webinars on Science Day

This year, on India’s Science Day – 28th Feb, I will be giving 2 webinars

1)9:45 AM to 10:15 AM:
C.V. Raman: A brief History

This is a pre-recorded talk

Organized by IISER Pune outreach.
IISER Pune Science Activity Centre
Age group 6 to 100: Students, Teachers, Science Enthusiasts and all Members of the Public
https://www.iiserpune.ac.in/events/3430/national-science-day-2022

2) 6pm – live talk
C. V. Raman : History of Ideas

Organized by Science Club IISER Pune

Target audience: Science students and researchers

Zoom Link: https://zoom.us/j/91706756774?pwd=Q3lLOXB3ODVnZHd0ZVJaTWc4QjFoUT09

Probably, these talks will be put on YouTube too. I shall post the links when available