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G V Pavan Kumar
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G V Pavan Kumar
@Pavan_KumarGV
Professor of Physics @IISERPune; Light-Matter Interaction, History & Philosophy of Physics; Scientist+Writer+Podcaster; Humanizing Science+Open Source On my own
Pune, India Katılım Ekim 2009
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Adding momentum to this summer:
youtube.com/shorts/N2In68t…
YouTube
G V Pavan Kumar@Pavan_KumarGV
Announcing online lectures on Optical Momentum My latest research grant from @ANRFIndia is on "Opto-Thermal Binding of Plasmonic Matter". This is a topic that is at the interface of optical momentum, thermodynamics, statistical physics, and advanced optical microscopy in the real and momentum spaces. Optical momentum and its measurement have a rich history in understanding electromagnetic waves and their interaction with matter. Over the past century, multiple applications have emerged that harness the transfer of momentum from light to matter. Interestingly, the light that is scattered off this interaction also carries relevant information not only about the interaction but also about certain parameters of light and the participating matter. These lectures will be my attempt to give an overview of the field. My main target audience is my PhD group members and senior undergraduates who are working with me. But they can be followed by anyone who is seriously interested in physics. The discussion involves theoretical optical physics (including elements of statistical and quantum optics), experimental techniques (including advanced microscopy methods) and a few computational techniques connected to the interaction. The goal of the lectures is to reveal the interesting questions in research papers, review articles, monographs and conference papers related to the field and their possible application in industries, including biophotonics and astro and space-photonics. From time to time, I will also discuss our research results from the project. The first lecture is online - linked below
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Announcing online lectures on Optical Momentum
My latest research grant from @ANRFIndia is on "Opto-Thermal Binding of Plasmonic Matter". This is a topic that is at the interface of optical momentum, thermodynamics, statistical physics, and advanced optical microscopy in the real and momentum spaces.
Optical momentum and its measurement have a rich history in understanding electromagnetic waves and their interaction with matter. Over the past century, multiple applications have emerged that harness the transfer of momentum from light to matter. Interestingly, the light that is scattered off this interaction also carries relevant information not only about the interaction but also about certain parameters of light and the participating matter.
These lectures will be my attempt to give an overview of the field. My main target audience is my PhD group members and senior undergraduates who are working with me. But they can be followed by anyone who is seriously interested in physics. The discussion involves theoretical optical physics (including elements of statistical and quantum optics), experimental techniques (including advanced microscopy methods) and a few computational techniques connected to the interaction. The goal of the lectures is to reveal the interesting questions in research papers, review articles, monographs and conference papers related to the field and their possible application in industries, including biophotonics and astro and space-photonics. From time to time, I will also discuss our research results from the project.
The first lecture is online - linked below
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Social Media Hygiene 101
My concern with historical (or contemporary) quotations, images and videos on social media is the authenticity of the source. In this day and age, showing quotations, photographs and videos from the past without reference to a source is borderline deception, especially when AI can generate any kind of content.
Never quote someone without a reference. And if the image/video is created with AI, it has to be explicitly spelt out.
If not, I do not pay attention to them.
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G V Pavan Kumar retweetledi
G V Pavan Kumar retweetledi
If this doesn’t give you goosebumps you’re not a physicist
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Today on arXiv - worth reading - has interesting comparison charts
"The survey provides a snapshot of physicists' views on issues in cosmology, black-hole physics, quantum mechanics, quantum gravity, and anthropic coincidences. A central finding is that several positions often described publicly as field-wide ``consensus'' views are, in practice, supported by much narrower majorities or by pluralities rather than majorities."
link below -
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Dear Young People,
Below is a brief lesson that I share with those who ask me for career advice. I hope it will be useful to you.
Category 1 (C1): Honesty, humility, discipline, effort and compassion
is as important as
Category 2 (C2): Irreverence, creativity, drive, communication and risk-taking.
In this era, C1 may look boring and sound cynical, but C1 can give you as much of a competitive advantage as C2, especially in the long run.
Importantly, C1 will build your character. C1 is probably the best way to build self-confidence, and hence self-respect.
This is not to underplay C2, which is equally important. Just that C1 and C2 are not zero-sums.
C1 and C2 are incomplete lists, and you can always expand them and keep referring to them for directions in life.
Best Wishes,
from a fellow student
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G V Pavan Kumar retweetledi
Happy 30th Birthday Internet Archive!
On May 10, 1996, Brewster Kahle founded a non-profit organization called the Internet Archive.
#InternetHistory
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G V Pavan Kumar retweetledi
Do check out this interesting collection on Emerging Aspects of Extracellular Matrix in Disease and Tissue Engineering. Was much fun to put this together with @trayambakbasak link.springer.com/book/10.1007/9…
Nikos Karamanos@karamanos_nikos
Thanks to Profs @trayambakbasak & Nagaraj Balasubramanian @AdhesionLab the 17th volume: ECM in Disease and Tissue Engineering. More than 420 pages enjoy it! @IntSocMatBio @HSBMB_official @amsocmatbio link.springer.com/book/10.1007/9…
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G V Pavan Kumar retweetledi
Excellent book, the best one on Gödel’s Theorem(s) that I’ve ever come across. It still requires a lot of deep thinking to get through, and I’ve not been able to follow all the arguments in detail. However, I’m confident that this is the first book where if I DID make the effort to understand all the arguments, I could do so. One or two more detailed reading could get me there.
One overarching point that I got from reading this book is how much reasoning behind these arguments relies on “meta” mathematical thinking, and our ability to use human language to elucidate such concepts. Those who think that the ONLY way we can truly comprehend something is if we completely formulate it in code or mathematics are deluding themselves. As are those who think that “philosophical” considerations have become completely meaningless and redundant.
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Raman scattering in Feynman's way... and it's a birthday..
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I discovered one of my colleagues (@Pavan_KumarGV ) at @IISERpune does a lot of writing on history of science. I recommend others who are interested to join this sciencemeetshistory.substack.com/?r=2jilzd&utm_…
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G V Pavan Kumar retweetledi
von Neumann was a deeply influential scientist. He provided a mathematical framework for quantum mechanics in terms of operators acting on a Hilbert space. 1/n
The Scientific Lens@LensScientific
Mathematician and polymath John von Neumann could speak 8 languages by the age of 6, including Ancient Greek and Latin, while mentally dividing 8-digit numbers for fun. By 8, he was already studying calculus. At 15, he entered the University of Budapest. At 19, he earned a degree in chemical engineering. At 22, he completed a PhD in mathematics in Berlin. He later helped shape quantum mechanics, game theory, modern computing, nuclear strategy, and artificial intelligence.
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The well-known astrophysicist, S. Chandrasekhar, liked the writings of Virgina Wolff. In her words, he found a unique channel to philosophize his own work, as he did in 1957:
‘By accident, I found the following quotation from Virginia Wolff which expressed very accurately my attitude to my work of the past years. This quotation ends my Rumford Lecture.
“There is a square. There is an oblong. The players take the square and place it upon the oblong. They place it very accurately. They make a perfect dwelling place. The structure is now visible. What was inchoate is here stated. We are not so various or so mean. We have made oblongs and stood them upon squares. This is our triumph. This is our consolation.”’ (Chandrasekhar, 2010, p. 41)
Source: Chandrasekhar, S. 2010. A Scientific Autobiography: S. Chandrasekhar: With Selected Correspondence. (posthumously published)
--
text from my blog
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G V Pavan Kumar retweetledi
Newly released interview with J. Robert Oppenheimer, recorded in 1966, focusing on his recollections of Enrico Fermi:
repository.aip.org/node/151135
(American Institute of Physics)
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@modularform Can't agree more.. and badly needs to be applied
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@Pavan_KumarGV Most importantly, it is applicable to areas other than science.
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The pictures are from IISER Pune campus.. around sunrise..
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