Kamala Sohonie and Iravati Karve


Great to see Kamala Sohonie featured on google doodle today. She was (probably?) the 1st woman to get a science PhD in India – circa 1939.
Also featured in the book “Lilavati’s Daughters” which I mentioned in my recent podcast

Going by the timelines, Iravati Karve got PhD in 1930, in anthropology, which is generally categorized as ‘social science’. Nevertheless, all inspiring.
Iravati had deep connections with Pune, and taught Deccan College

More about her : https://www.ias.ac.in/public/Resources/Initiatives/Women_in_Science/Contributors/Iravati.pdf

More bios of inspiring scientists : https://www.ias.ac.in/Initiatives/Women_in_Science/The_Women_Scientists_of_India

Two Chandrasekhars and their students

I discuss the legacy of two important individuals Subrahmanyan Chandrasekhar and Sivaramakrishna Chandrasekhar and their students. I highlight their styles of doing research and how they inspired important schools of thought. I emphasize the role of economic privilege and gender. I discuss Bimala Buti and mention about interesting books on women in science : Lilavatis Daughters and Lab Hopping.

“Bimla Buti.” In Wikipedia, February 8, 2023. https://en.wikipedia.org/w/index.php?title=Bimla_Buti&oldid=1138208481.

“Chandra :: About Chandra :: Subrahmanyan Chandrasekhar – The Man Behind The Name.” Accessed June 14, 2023. https://chandra.harvard.edu/about/chandra.html.

“Chandrasekhar and His Limit – Google Books.” Accessed June 14, 2023. https://www.google.co.in/books/edition/Chandrasekhar_and_His_Limit/HNSdDFOJ4wkC?hl=en&gbpv=1&pg=PP1&printsec=frontcover.

Chandrasekhar, S. Liquid Crystals. Cambridge University Press, 1992.

Cladis, Patricia E., Banahalli R. Ratna, and Ranganathan Shashidar. “S. Chandrasekhar (1930–2004): Discotic Liquid Crystals.” Angewandte Chemie International Edition 43, no. 26 (2004): 3360–3360. https://doi.org/10.1002/anie.200460918.

Dunmur, David, and Tim Sluckin. Soap, Science, and Flat-Screen TVs: A History of Liquid Crystals. Oxford University Press, 2014. https://www.google.co.in/books/edition/Soap_Science_and_Flat_Screen_TVs/2iSQDwAAQBAJ?hl=en&gbpv=1&printsec=frontcover.

Goodby, John W. “Sivaramakrishna Chandrasekhar (1930–2004).” Nature 428, no. 6986 (April 2004): 906–906. https://doi.org/10.1038/428906a.

Gray, G. W., G. R. Luckhurst, and E. P. Raynes. “Sivaramakrishna Chandrasekhar. 6 August 1930 — 8 March 2004: Elected FRS 1983.” Biographical Memoirs of Fellows of the Royal Society 53 (January 2007): 127–41. https://doi.org/10.1098/rsbm.2007.0015.

Great Indians: Professor Subrahmanyan Chandrasekhar, 2014. https://www.youtube.com/watch?v=n-lJjR7pM7k.

“Imprints Collection.” Accessed June 17, 2023. https://wwws.rri.res.in/htmls/library/imprints_collection/bios/obituary_chandrasekhar.html.

“Imprints Collection – Collected Publications of Prof. Jayaraman.” Accessed June 14, 2023. https://wwws.rri.res.in/htmls/library/raman_era/Publications/sc@rri.html.

“Kameshwar C. Wali.” In Wikipedia, May 16, 2023. https://en.wikipedia.org/w/index.php?title=Kameshwar_C._Wali&oldid=1155091599.

Kumar, G. V. Pavan. “Raman’s Nephews.” Scatterings (blog), February 27, 2020. https://backscattering.wordpress.com/2020/02/28/ramans-nephews/.

“Lilavatis Daughters | Women in Science | Initiatives | Indian Academy of Sciences.” Accessed June 17, 2023. https://www.ias.ac.in/Initiatives/Women_in_Science/Lilavatis_Daughters.

NobelPrize.org. “The Nobel Prize in Physics 1983.” Accessed June 14, 2023. https://www.nobelprize.org/prizes/physics/1983/chandrasekhar/biographical/.

Penguin Random House India. “Lab Hopping.” Accessed June 17, 2023. https://penguin.co.in/book/lab-hopping/.

“Prof. G S Ranganath.” Accessed June 14, 2023. https://wwws.rri.res.in/htmls/library/imprints_collection/album/Prof.%20G%20S%20Ranganath/index.html#.

“Prof G S Ranganath | Imprints Collection | Raman Research Institute.” Accessed June 14, 2023. https://wwws.rri.res.in/htmls/library/imprints_collection/bios/gsrangnath.html.

“Prof G Srinivasan.” Accessed June 14, 2023. https://wwws.rri.res.in/htmls/library/imprints_collection/album1/Prof%20G%20Srinivasan/index.html.

“Prof. G. Srinivasan | Imprints Collection | Raman Research Institute.” Accessed June 14, 2023. https://wwws.rri.res.in/htmls/library/imprints_collection/bios/srinivasan.html.

“Prof. S. Chandrasekhar | Imprints Collection | Raman Research Institute.” Accessed June 14, 2023. https://wwws.rri.res.in/htmls/library/imprints_collection/bios/chandrasekhar.html.

“Sivaramakrishna Chandrasekhar.” In Wikipedia, February 8, 2023. https://en.wikipedia.org/w/index.php?title=Sivaramakrishna_Chandrasekhar&oldid=1138214704.

“The Women Scientists of India | Women in Science | Initiatives | Indian Academy of Sciences.” Accessed June 17, 2023. https://www.ias.ac.in/Initiatives/Women_in_Science/The_Women_Scientists_of_India.

Wali, Kameshwar C. A Quest for Perspectives: Selected Works of S Chandrasekhar (With Commentary)(In 2 Volumes). IMPERIAL COLLEGE PRESS, 2001. https://doi.org/10.1142/p175.

———. A Scientific Autobiography: S Chandrasekhar. WORLD SCIENTIFIC, 2011. https://doi.org/10.1142/7686.

Wali, Kameshwar C. Chandra: A Biography of S. Chandrasekhar. Centennial Publications of the University of Chicago Press. Chicago, IL: University of Chicago Press, 1992. https://press.uchicago.edu/ucp/books/book/chicago/C/bo3774392.html.

Wali, Kameshwar C. S Chandrasekhar: The Man Behind the Legend. PUBLISHED BY IMPERIAL COLLEGE PRESS AND DISTRIBUTED BY WORLD SCIENTIFIC PUBLISHING CO., 1997. https://doi.org/10.1142/p030.

Michelson’s legend in a poem

Albert A Michelson. Image credit : Nobel Prize webpage

Albert Abraham Michelson was a celebrated American experimental physicist. He was associated with one of the most famous experiments in physics : Michelson-Morley Experiment, which formed an important input for Einstein’s special theory of relativity.

Recently, I discussed about this experiment in one of my podcasts.

Michelson’s ability to design and develop optical instruments including the interferometer named after him, was one of vital elements in his legendary pursuit to measure velocity of light. He continued to refine this measurement over a period of 40 years or so.

He was also the first American to win a Nobel prize in science (physics, 1907). Americans adored him, and he shot up to fame with his ingenious experiments and became a folklore of United States.

There is a very nice historical account of the Michelson-Morley-Miller experiment in the book titled : The Ethereal Aether; a History of the Michelson-Morley-Miller Aether-Drift Experiments, 1880-1930. by Swenson, Loyd S. published in 1972.

(Yes, you read it right, there was another guy called Dayton Miller who played a critical role in refining the experiment initiated by Michelson and Morley )

In Swenson’s book, there are two stanzas from a poem by Edwin Herbert Lewis that highlights Michelson’s legend. Below I reproduce the same :

But in Kyerson rainbows murmur the music of heavenly things.
Is not this stranger than heaven that a man should hear around
The whole of earth and the half of heaven and see the shadow of sound?
He gathereth up the iris from the plunging of planet’s rim
With bright precision of fingers that Uriel envies him.
But when from the plunging planet he spread out a hand to feel
How fast the ether drifted back through flesh or stone or steel
The fine fiducial fingers felt no ethereal breath. They penciled the night in a cross of light and found it still as death.
Have the stars conspired against him? Do measurements only seem?
Are time and space but shadows enmeshed in a private dream?

But dreaming or not, he measured. He made him a rainbow bar,
And first he measured the measures of man, and then he measured a star.
Now tell us how long is the metre, lest fire should steal it away?
Ye shall fashion it new, immortal, of the crimson cadmium ray.
Now tell us how big is Antares, a spear-point in the night?
Four hundred million miles across a single point of light.
He has taught a world to measure. They read the furnace and gauge
By lines of the fringe of glory that knows nor aging nor age.
Now this is the law of Ryerson and this is the price of peace-
That men shall learn to measure or ever their strife shall cease.

E.H. Lewis

Indeed humans shall learn to measure or ever their strife shall cease…

New episode on podcast

How does science approach failure and ignorance? What is an experiment? What can we learn from a failed experiment? How ignorance plays a relevant role in science and technology? I discuss these and related issues in this episode.

  1. Chalmers, Alan Francis. What Is This Thing Called Science? Hackett Publishing Company, Incorporated, 2013. https://www.google.co.in/books/edition/What_is_this_Thing_Called_Science/WQh5wDlE8cwC?hl=en&gbpv=1&printsec=frontcover.
  2. “Experimental Determination of the Velocity of Light, by Albert A. Michelson.” Accessed June 8, 2023. https://www.gutenberg.org/files/11753/11753-h/11753-h.htm.
  3. “History of Scientific Method.” In Wikipedia, May 8, 2023. https://en.wikipedia.org/w/index.php?title=History_of_scientific_method&oldid=1153802180
  4. “Edward W. Morley.” In Wikipedia, April 15, 2023. https://en.wikipedia.org/w/index.php?title=Edward_W._Morley&oldid=1149891428.
  5. “Dayton Miller.” In Wikipedia, November 12, 2022. https://en.wikipedia.org/w/index.php?title=Dayton_Miller&oldid=1121492015.
  6. Kumar, G. V. Pavan. “Importance of a Failed Experiment.” Scatterings (blog), September 8, 2019. https://backscattering.wordpress.com/2019/09/08/importance-of-a-failed-experiment/.
  7. NobelPrize.org. “The Nobel Prize in Physics 1907.” Accessed June 7, 2023. https://www.nobelprize.org/prizes/physics/1907/michelson/facts/.
  8. “Scientific Method.” In Wikipedia, June 9, 2023. https://en.wikipedia.org/w/index.php?title=Scientific_method&oldid=1159248399.
  9. Swenson, Loyd S. The Ethereal Aether; a History of the Michelson-Morley-Miller Aether-Drift Experiments, 1880-1930. Austin: University of Texas Press, 1972. http://archive.org/details/etherealaetherhi0000swen.
  10. Firestein, Stuart. Ignorance: How It Drives Science. Oxford University Press, 2012. https://www.google.co.in/books/edition/Ignorance/GbD052_PH0cC?hl=en&gbpv=1&printsec=frontcover.

New Episode : Ashkin’s Story – no prize to Nobel prize

References :

  1. “The Idea Factory: Bell Labs and the Great Age of Americ….” Accessed May 31, 2023. ⁠https://www.goodreads.com/book/show/11797471-the-idea-factory⁠.
  2. Ashkin, Arthur. Optical Trapping And Manipulation Of Neutral Particles Using Lasers: A Reprint Volume With Commentaries. World Scientific, 2006.
  3. NobelPrize.org. “The Nobel Prize in Physics 2018.” Accessed June 2, 2023. ⁠https://www.nobelprize.org/prizes/physics/2018/ashkin/biographical/⁠.
  4. Kumar, G. V. Pavan. “Trapping Questions and Evolving Answers.” Scatterings (blog), August 12, 2018. ⁠https://backscattering.wordpress.com/2018/08/12/trapping-questions-and-evolving-answers/⁠.
  5. “Bell Labs (18 Books).” Accessed May 31, 2023. ⁠https://www.goodreads.com/list/show/136522.Bell_Labs⁠.
  6. “Understanding Comets.” Accessed June 2, 2023. ⁠http://www.ianridpath.com/halley/halley2.html⁠.
  7. IUCAA Science Day Events Webcast, 2019. ⁠https://www.youtube.com/watch?v=W4tIbxTwasM⁠.
  8. NobelPrize.org. “The Nobel Prize in Physics 1997.” Accessed May 31, 2023. ⁠https://www.nobelprize.org/prizes/physics/1997/summary/⁠.
  9. “Steven Chu – Nobel Lecture: The Manipulation of Neutral Particles.” Accessed June 3, 2023. ⁠https://www.nobelprize.org/prizes/physics/1997/chu/lecture/⁠.
  10. NobelPrize.org. “The Nobel Prize in Physics 2018.” Accessed May 31, 2023. ⁠https://www.nobelprize.org/prizes/physics/2018/summary/⁠.
  11. Nokia Bell Labs. “Nokia Bell Labs Awards,” July 3, 2020. ⁠https://www.bell-labs.com/about/awards/⁠.

New Episode : Science, Rationality and Compassion

Watson, Peter. “Ideas: A History from Fire to Freud.” Accessed May 26, 2023. https://peterwatsonauthor.com/books/ideas-a-history-from-fire-to-freud/.

Pinker, Steven. “Rationality.” Accessed May 26, 2023. https://www.google.co.in/books/edition/Rationality/HT0NEAAAQBAJ?hl=en&gbpv=1&printsec=frontcover.

“Tarka Sastra.” In Wikipedia, July 8, 2022. https://en.wikipedia.org/w/index.php?title=Tarka_sastra&oldid=1097005247.

Adam Grant [@AdamMGrant]. “Compassion Is Kinder and Healthier than Empathy. Evidence: When We Feel Others’ Pain, We Often Get Overwhelmed and Withdraw. When We Feel Concern for Their Pain, We Reach out and Help. The Point of Compassion Isn’t to Share Their Feelings. It’s to Care about Their Feelings. Https://T.Co/EHDwUxHUJd.” Tweet. Twitter, May 24, 2023. https://twitter.com/AdamMGrant/status/1661377095736389640.

In Defense of Science & Scientific Method, 2023. https://www.youtube.com/watch?v=ng9ifSod7_k.

Kumar, G. V. Pavan. “51. A Case for Science + Philosophy.” Scatterings (blog), October 13, 2021. https://backscattering.wordpress.com/2021/10/13/51-a-case-for-science-philosophy/.

Kumar, G. V. Pavan. “Connection between Science and Empathy.” Scatterings (blog), March 5, 2022. https://backscattering.wordpress.com/2022/03/05/connection-between-science-and-empathy/.

New episode : Six Jugalbandis of Scientific Research

Namaste, Hola, Welcome!

I am G.V. Pavan Kumar, the author of this blog.

My research interests are :

  • Optics and  Soft Matter Physics
  • History of Science

In my research group, we study the interaction of light with soft-matter from a photonics viewpoint.

Until now, I have supervised 11 PhD theses, 11 MS theses, a few post-docs and several undergraduate students at IISER Pune (see my group members – past and present). I continue to learn a lot from them.

See our publications sorted by : topics / chronology.

Another strand of my research is the history of science. I am interested in the historical evolution of ideas in physical sciences and technology. I research the life and work of past scientists, innovators, and people driven by curiosity, and I write about them from an Indian and Asian perspective. My motivation is to humanize science.

Writing has been an integral part of my life since my childhood (1980s), and I have been in the process since the ‘pre-internet’ era. I have been blogging since 2008 or so. You can access my old blog site here.

Also connected to my blog are:

YouTube channel – Science meets History, 

podcast – Pratidhvani: Humanizing Science

My blog integrates all of the above.

official profile

lab webpage

twitter feed

You can access and listen to my audio podcast – Pratidhvani – Humanizing Science, on -Spotify, YouTube (audio), Google Podcast or Apple podcast (all links below).

Youtube channel

Podcast Pratidhvani – Spotify

Podcast Pratidhvani -Google podcast

Podcast Pratidhvani -Apple podcast

You can give your feedback here.

Note: My blogs/podcasts/videos are motivated by my research, teaching and learning. I create them in my personal capacity.