Friday, August 30, 2024

My B.Tech. Gurus at IIT Bombay, 1968-1973.

My teachers during the B.Tech. Programme : 1968 to 1973, at IIT Bombay

    The following teachers are no longer at IIT Bombay. Those marked with an asterisk (*) are no longer with us. They rest in peace.

  1. Achuthan M [ME]
    - Thermodynamics.
    "Goofing up is nobody's unique birthright."

  2. Batra RL * [MA]
    - Mathematics and Numerical Analysis.

  3. Bhargava HD [CH]
    - Inorganic Chemistry.

  4. Bhattacharyya SP * [MA]
    - Mathematics.

  5. Bose MSC [ME]
    - Experimental Stress Analysis

  6. Chakraborti DK [CH]
    - Inorganic Chemistry.

  7. Chandrasekharan VS [CE]
    - Applied Mechanics (Engineering Mechanics as it was known then).
    The subject was considered a terror, not the teacher. One of the best teachers of engineering science that I had.

  8. Chatterjee A [HSS]
    - English.

  9. Chindarkar UN [ME] (aka Powle US)
    - Fluid Mechanics, Fluid Machinery.

  10. Dange YK [ME]
    - Theory of Machines, Machine Design.

  11. Desai PD [EE]
    - Instrumentation.

  12. Deshpande AS * [ME]
    - Production Engineering (Rolling).

  13. Dhariwal HC * [ME]
    - Prime Movers.

  14. Divekar MV [MA]
    - Mathematics.

  15. Ghosh Deb K [PH]
    - Physics (Mechanics). Part of Volume I of Resnick and Halliday.

  16. Gopalan MN [MA]
    - Mathematics.

  17. Iyer PR * [CH]
    - Organic Chemistry. English and Cassidy was the text.

  18. Jagadish BS * [ME]
    - Gas Turbines.
    Founder of the Heat Transfer Laboratory.

  19. Jaganmohan A * [ME]
    - Steam Turbines.
    Founder of the Steam Power Laboratory.

  20. Jagannnath Rao M * [PH]
    - Physics (Electricity and Magnestism). He completely uncovered the volume II of Resnick and Halliday (or was it Halliday and Resnick?).

  21. Jain PC [MA]
    - Mathematics.

  22. Jaiswal K [ME]
    - Workshop Technology. I later realised that he was a TTT - Technical Teacher Trainee.

  23. Jog DV * [HSS]
    - English.

  24. Kamalapurkar DB [ME]
    - Mechanical Engineering Drawing.

  25. Kamath MS * [EE]
    - Electric Machines.
    Mine was perhaps the only non-EE batch which faced MSK for three semesters!

  26. Khemchandani MV * [ME]
    - Machine Design.

  27. Krishnamurthy S [MA]
    - Mathematics.

  28. Kulkarni MD [ME]
    - Steam Power.
    Vanished in 1973. Apparently, went to the USofA. Could not be traced.

  29. Kumar RD [EE/CSE]
    - Electric Circuits.
    Provided an excellent exposition, using Heyt and Kemmerly. Also, taught us the programming language ACE for MINSK-2 (remember the CNA tapes?, and the HSP output ribbon?).

  30. Magal BS [ME]
    - Nuclear Engineering.
    Set up the lab in Room 112.

  31. Mahajan AS [PH]
    - Physics.

  32. Malvadkar CB * [ME]
    - Machine Design.

  33. Mokashi-Punekar MK [HSS]
    - English.

  34. Nagachandran A [ME]
    - Casting.

  35. Narayankhedkar KG [ME]
    - Airconditioning.

  36. Padalia BD * [PH]
    - Physics (Optics).

  37. Palekar MG [MA]
    - Mathematics.

  38. Parikh PP * [ME]
    - Combustion, IC Engines.

  39. Parulekar BB * [ME]
    - Refrigeration.
    Where is Khandu Patil?

  40. Patil SH [PH]
    - Modern Physics.

  41. Prabhu PH [HSS]
    - Industrial Phychology.

  42. Rajan R [PH]
    - Modern Physics.

  43. Raju VC [ME]
    - Instrumentation.

  44. Ramaswamy N * [ME]
    - He was my seminar guide.

  45. Ranga Rao MP [MA]
    - Mathematics.

  46. Reddy CT [ME]
    - Production Engineering.

  47. Reddy GP [ME]
    - Strength of Materials.

  48. Sanyal BS * [HSS]
    - Logic.

  49. Sethuraman TV * [HSS]
    - Economics.

  50. Shankar K * [EE]
    - Electronics.

  51. Soni RY * [CE]
    - Strength of Materials.

  52. Srivastava HN [CH]
    - Physical Chemistry.

  53. Sukhatme SP [ME]
    - Heat Transfer.
    His textbook was first used by us.
    He was also the guide for my Home Paper (as the BTP was known then).

  54. Sundararajan A [PH]
    - Physics (Thermodynamics and Waves). Part of Volume I of Resnick and Halliday.

  55. Swaminathan N [HSS]
    - Ethics.

  56. Tembe RG [CE]
    - Geometric Drawing, Civil Engineering Drawing.

  57. Vartak MN * [MA]
    - Industrial Statistics and SQC, Operational Research.
    What a teacher!

  58. Vasudevan P * [ME]
    - Machine Design, Theory of Elasticity.

  59. Venkataraman G [MT]
    - Physical Metallurgy.

  60. Viladkar BG * [PH]
    - Thermodynamics.

  61. Vyas BD * [ME]
    - Fluid Mechanics.

Wednesday, August 14, 2024

The Manchester Bee

2022 January 25, Tuesday: The Manchester Bee


One item one may or may not notice in Manchester is one of its common symbols: the worker bee. 

The formal coat of arms for Manchester is:


At the top is a globe with a map and seven bees in a geometric honeycomb pattern.


The worker bee is the common symbol of Manchester. 

It represents a worker in a mill from the time of the Industrial Revolution.


If one is observant, one will notice the bee almost everywhere.

Here you see the bee on a litter bin and on a bollard.


And on one of my caps.




Here it is on a keychain/pendant and on the entry passage of a shop.


And on the windows of shops - from the high-end to the DMart types.


The bees also ride the Stagecoach Green Electric Buses.  I see three on this side of this bus.



Search Google for ‘Manchester Bee’.  


Does Mumbai have such a symbol? 

If so, what is it?




Thursday, September 8, 2022

Manchester Berries

Manchester (UK) is full of berries.  You see them on trees, shrubs, everywhere.   Nobody gives them a second thought.  See for yourself:

 

 

 

 

  

 

 

 

And what do you do with all these berries?  

Household remedy for cold.  Harvest them, clean them, crush them, then a secret sauce of lemon and cranberry juice is used to soak them, and then a bit of heating and filtering.  Finally, you get ‘Fire-water’, which is a remedy for flu!

 

A friend prepared a bottle of this potion for me.  And it works! Photograph below.  

The potion tastes somewhat like the ginger-lemon drink of old Bombay but is more astringent.   

Manchester, UK, 2021Nov27

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Sunday, January 31, 2021

Some Stuff I Did Not Know This Time Yesterday!

2022 11 03

https://www.bbc.com/future/article/20221103-how-language-warps-the-way-you-perceive-time-and-space

The weird way language affects our sense of time and space

2022 10 26

https://www.dangermouse.net/esoteric/piet.html

Piet is a programming language.  Each programme looks like a piece of abstract art.

2022 10 18

https://aeon.co/essays/will-brains-or-algorithms-rule-the-kingdom-of-science

Understanding is not well understood.

2022 10 14

https://www.theatlantic.com/ideas/archive/2022/10/against-algebra/671643/

Why complain about algebra?  Perhaps the problem is the way algebra is taught and is expected to be understood and learnt.  

2022 09 30

The Second Elizabeth a Life Appreciated

2022 09 13

Was Richard Feynman a great teacher?

2022 07 13

The capacity of the seven lakes that supply water to Mumbai is 14.47 lakh million litres.  That is 1.447E+12 litres = 1.447E+9 cu.m = 1.447 cu.km.

2022 07 04

Rosetta Stone is like Duolingo - helps you learn languages.

https://www.rosettastone.com/
Duolingo

Learnico is a software package created by MKCL - teaching tools creation.

https://learnico.mkcl.org/

2022 06 07

https://www.vox.com/23130613/fewer-friends-how-many

Fewer the better - quality stumps quantity.

https://www.newyorker.com/magazine/2022/06/13/the-strange-and-secret-ways-that-animals-perceive-the-world-ed-yong-immense-world-tom-mustill-how-to-speak-whale

How animals sense and communicate.

https://www.newyorker.com/video/watch/obsessions-dogs-are-people-too

Dogs are people, too!

2022 06 04

https://www.atlasobscura.com/articles/maria-sibylla-merian-artist-insects-flowers.amp

What a scientist - in the 17th century.

2022 05 11

https://edition.cnn.com/2022/05/10/health/dog-sleep-dreams-wellness/index.html

The sleeping pattern of dogs (and other pets).

2022 05 03

Feynman's 1955 address at a meeting of the NAS is available in text and video form.

https://calteches.library.caltech.edu/1575/1/Science.pdf
https://www.youtube.com/watch?v=kbh_6tQ6nm8
https://thejeshgn.com/wiki/great-speeches/the-value-of-science-richard-feynman/
https://faa.unm.edu/P302.041.SU17/Resources/Reflections/feynman.pdf

2022 04 30

https://kk.org/thetechnium/103-bits-of-advice-i-wish-i-had-known/

Excellent list.  One can spend hours studying it.

https://www.theatlantic.com/science/archive/2022/04/dog-breed-personality-characteristics/629707/?position=10&utm_source=pocket_mylist

Dog breeds are not that different.  

https://www.popsci.com/technology/f-22-agcas-save-alaska/

Properly working hardware and software does save lives.

2022 04 29

https://www.newstatesman.com/politics/uk-politics/2022/04/letter-of-the-week-the-law-of-thermodynamics

A very blunt letter related to energy, environment, and consumption.

2022 04 15

https://www.technologyreview.com/2020/01/02/102309/a-virtual-version-of-da-vincis-mystery-glass-orb-has-helped-explain-its-weirdness/

One needs optics, ray-tracing, computer science, etc. etc. to appreciate the genius of Leonardo da Vinci.

2022 04 03

https://www.poetryfoundation.org/poems/44266/mending-wall

Good fences make good neighbours.  

2022 03 30

https://timesofindia.indiatimes.com/india/maths-not-must-for-1/3rd-of-engineering-courses/articleshow/90527825.cms

This is nonsense.  When a reputed organisation states that some study is necessary for engineering, it is almost certainly right.  When it states that some study is unnecessary, it is definitely wrong. [After: Clarke's First Law]

2022 03 27

https://aeon.co/videos/a-rare-glimpse-inside-a-samurai-sword-workshop-where-ritual-meets-mastery

Classical engineering.  Metalworking - forging - heat treatment - surface treatment.

2022 03 26

https://photogallery.indiatimes.com/etimestrendsetters-rare-pictures-of-nutan-the-legendary-actress-whose-simplicity-was-the-ultimate-sophistication/articleshow/90414375.cms

There are/were actresses and there was Nutan.

2022 03 22

https://www.vice.com/en/article/4awqz3/why-are-letters-shaped-the-way-they-are

On the shape of letters.

2022 03 18

https://www.math.columbia.edu/~thaddeus/ranking/investigation.html

Long article, but well-researched.  Read through at least the first part, if you are interested in the ranking process of edu institutes.  Numbers-chasing.

2022 03 14

https://edition.cnn.com/2022/03/09/health/therapy-dogs-hospitals-wellness/index.html
https://www.npr.org/2022/03/12/1085971965/power-of-the-dog-ukraine-war-pets-russia

Re: Dogs!

https://www.nationalgeographic.org/media/wolves-yellowstone/
https://www.youtube.com/watch?v=gc52l5ZcAJ0
https://www.youtube.com/watch?v=fTPt70vA39k

How wolves changed Yellowstone

2021 12 31

https://www.newscientist.com/article/2302655-dogs-notice-when-computer-animations-violate-newtons-laws-of-physics

Dog news.  Intelligence of canines.  

2021 12 29

https://www.newslaundry.com/2017/01/19/the-importance-of-taking-initiative

This article which linked me to A Message to Garcia.  Hubbard, 1899.

I think it is standard fare in the army, etc..  At least in the Royal Navy, it is.

I think it should be recommended for IIT Profs as well.  There are a majority who will need the dose.  Even in IITB, the trend over the years is from the directive style to the detailed style.  One just has to browse through the meetings of the Senate of IITB.

I remember the good old days where the contents of a course were prescribe in no more than 150 words.  Often, within 100 words.

Compare this with the prescription of a course in a typical Indian university (or autonomous college).  At least 400 words.  Split into units, weeks, lectures.  I used to think that only robots can do justice to these.

In IITB, among colleagues and administrators, I was either popular or unpopular.  Now I realise that the reason was my directive style.  ("Do it the way you think best.  I will back you up and sign a reasonable number of papers.  But I do not want any complaints from Stores, Accounts, and Audit.")

I dug further.  It seems many things re: Rowan (the hero of the essay by Hunnard) are fiction or folklore.  Please see, e.g., 

https://en.wikipedia.org/wiki/Andrew_Summers_Rowan

2021 09 26

Vivien Leigh was born in Darjeeling, India.  On November 5, 1913.

2021 04 14

Dr B. R. Ambedkar was born on today's date, 130 years ago.  His original surname was Ambavadekar.  It was related to the place named Ambavade or Ambadave in Maharashtra (then Bombay Province).  A school teacher renamed him as Ambedkar.  [Sunil Khilnani, Incarnations]

2021 03 30

By the end of the 1800s, human labour made up 94% of all industrial work in the US. Today, it constitutes just 8%.

2021 02 27

Many touristy places and things really look beautiful when empty.  Thank the virus!

2021 02 11 Thu

The entire coronavirus would fit in a can of cola.

We should provide such examples to our schoolkids.

2021 01 31 Sun

There is a museum in Seattle (WA-USA) which has working computers from my student days!

Here is a nice video about it.  Here is another.

Sunday, December 27, 2020

Some of my favourite quotes.

Here are some of my favourite quotes, etc..
(Moved here from my IITB-ME Webpage)

Achuthan, M. (1939- )

Goofing up is nobody's unique birthright!

Intelligence can be nicely put on a scale of 0 to 10.
For example,
10 : divine,
9 : superhuman,
8 : genius (e.g. Leonardo da Vinci),
7 : human (like you and me),
6 : animal,
5 : machine,
4 : artificial,
3 : military.
I am yet to find any illustrations of levels 2, 1, and 0, and hence have not named those levels.

Do not accept any statement without questioning it, not even this statement.

One telephone connection is a necessity.
Two ... is utility.
Three ... luxury!
Four ... opulence!!
And
None is paradise!!!


Amarnath, C. (1947- )

If we cannot make a given thing on our own, we perhaps do not need it either.


Belasco, David (1853-1931)

If you can't write your idea on the back of my calling card, you don't have a clear idea.


Ben, Henry Albert

Hell must be isothermal; for otherwise the resident engineers and physical chemists (of which there must be some) could set up a heat engine to run a refrigerator to cool off a portion of their surroundings to any desired temperature.

[‘The Second Law’]


Churchill, Winston (1874-1965)

From now on, ending a sentence with a preposition is something up with which I will not put.


Clarke, Arthur C. (1917-2008)

This is the first age that's paid much attention to the future, which is a little ironic since we may not have one.

When a distinguished but elderly scientist states that something is possible, he is almost certainly right.  When he states that something is impossible, he is very probably wrong. [Clarke's First Law]

The only way to discover the limits of the possible is to go beyond them into the impossible. [Clarke's Second Law]

Any sufficiently advanced technology is indistinguishable from magic. [Clarke's Third Law]


Clark, J. M. (1884-1963)

Knowledge is the only instrument of production that is not subject to diminishing returns.


Clarkson, Jeremy

It was Sheikh Yamani, the former boss of OPEC, who pointed out that the Stone Age didn't end because the world ran out of stone.  Nor did the Iron Age end because we ran out of iron.  And you can be fairly sure the Oil Age won't end because we run out of oil.  ["Volkswagen Golf R32"]

The last truly great piece of automotive ingenuity came from Toyota who, in the late 1960s, showed the world that cars didn't have to break down all the time."  ["Fiat Multipla 1.9JTD"]

In two million years (ending about 1820) man managed to discover only three important things: fire, the fact that wood floats, and the horse.  ["Fiat Multipla 1.9JTD"]


Einstein, Albert (1879-1955)

I never think of the future.  It comes soon enough.


Farouk I (1911-1965), King of Egypt

In a few years there will be only five kings and queens in the world — the King and Queen of England and the four kings and queens in a pack of cards.


Fitzgerald, Fracis Scott (1896-1940)

The test of first-rate intelligence is the ability to hold two opposite ideas in the mind at the same time, and still retain the ability to function.


Fry, Stephen (1957- )

The goal is not to make humans computer-literate, it is to make computers human-literate.


Golding, William (1911-1993)

I think women are foolish to pretend they are equal to men; they are far superior and always have been.


Gray, Erich S.

Whatever you give a woman, she will make greater.
If you give her sperm, she'll give you a baby.
If you give her a house, she'll give you a home.
If you give her groceries, she'll give you a meal.
If you give her a smile, she'll give you her heart.
She multiplies and enlarges what is given to her.
So, if you give her any crap, be ready to receive a ton of shit!


Johnson, Samuel (1709-1784)

Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.

Knowledge is of two kinds.  We know a subject ourselves; or, we know where we can find information upon it.


Kettering, C. F. (1876-1958)

My interest is in the future because I am going to spend the rest of my life there.


Krutch, J. W. (1893-1970)

As machines get to be more like men, men will come to be more like machines.

Logic is the art of going wrong with confidence.


Mark Twain (1835-1920)

Heaven goes by favour.  If it went by merit, you would stay out and your dog would go in.

If you pick up a starving dog and make him prosperous, he will not bite you.  This is the principal difference between a dog and a man.


McLuhan, Marshall (1911-1980)

Computers can do better than ever what needn't be done at all.  Making sense is still a human monopoly.  [ Take Today : The Executive as Dropout (1972) ]


Michelangelo Buonarroti (1475-1564)

Trifles go to make perfection,
And perfection is no trifle.


Moffat, Steven (1961- )

As you come into this world, something else is also born.
You begin your life, and it begins a journey towards you.
It moves slowly, but it never stops.
Wherever you go, whatever path you take, it will follow - never faster, never slower, always coming.
You will run, it will walk.
You will rest, it will not.
One day, you will linger in the same place too long - you will sit too still, or sleep too deep.
And when, too late, you rise to go, you will notice a second shadow next to yours.
Your life will then be over.
[‘Doctor Who : Heaven Sent’ (Series 9)]

Stories are where memories go when they are forgotten.
[‘Doctor Who : Hell Bent’ (Series 9)]


Naisbitt, John (1929- )

We are drowning in information but starved for knowledge.


Planck, M. (1858-1947)

A new scientific truth does not triumph by convincing its opponents and making them to see the light, but rather because its opponents eventually die, and a new generation grows up that is familiar with it.
[‘The Philosophy of Physics’; Norton, New York, 1936]


Rowling, J. K. (1965- )

Some failure in life is inevitable.  It is impossible to live without failing at something, unless you live so cautiously that you might as well not have lived at all : in which case, you fail by default.
[ Commencement Address, 'The Fringe Benefits of Failure, and the Importance of Imagination' at the Annual Meeting of the Harvard Alumni Association. 05 June 2008 ]


Russell, Bertrand (1872-1970)

Our own planet, in which philosophers are apt to take a parochial and excessive interest, was once too hot to support life, and will in time be too cold.  After ages during which the earth produced harmless trilobites and butterflies, evolution progressed to the point at which it generated Neros, Genghis Khans, and Hitlers.  This, however, is a passing nightmare; in time the earth will become again incapable of supporting life, and peace will return.
[‘Unpopular Essays’, Simon & Schuster, 1950]


Sagan, Carl (1934-1996)

A blade of grass is a commonplace on Earth; it would be a miracle on Mars. Our descendants on Mars will know the value of a patch of green. And if a blade of grass is priceless, what is the value of a human being?

['Pale Blue Dot: A Vision of the Human Future in Space', Random House, 1994] 




Sunday, July 19, 2020

On Online Classes

2020 05 26, Tuesday

A friend and I were discussing this:

After Weeks Of Online Classes At IIT, Here's The Truth - NDTV https://www.ndtv.com/opinion/online-classes-sound-cute-on-paper-heres-the-reality-2237464

WhatsApp turned out to be an unsuitable medium for this, so I wrote my comments out separately.

My father used to say that no comparison is fair.  This can be extended to ... .

I believe that any new scheme in publishing, education, learning, etc.does not replace the earlier schemes.  It only adds to it.

Old proverb:

The old order changeth, yielding place to the new.

New version:

The old order endures; it looks a bit different, since the new one has a place in it.

Example: In the old old days, people had to travel to a Gurukul, stay as a member of a Guru’s (extended) family, and study and learn.  Almost a 1-to-1 ratio.  OK, not exactly, but maybe 1 to N, when N was a single digit (usually).  [Disadvantage: the topper had to marry the daughter of the Guru!]

Then came the technique of writing (however crude it was).  And people thought that one can learn from the writings of the Guru and his shishyas.  That was possible, but the Guru was not replaced, only his students increased, and they had to meet and discuss their ideas and difficulties with the Guru.

Then came the printed book (Johannes Gutenberg).  The book did not replace the Guru, nor writing, nor discussions and interactions with a Guru.

Then came photography.  It added to the books, etc..  But people still did go out to look at stuff, samples, trees, hills, rivers, waterfalls, birds, dogs, ... .

Then came cinematography.  Another addition, note: NOT a replacement.  People watch the movie, and read the book, often do both.  Ditto for TV.  All that it did was to bring the cinema into homes.  Nothing of the old was replaced.  The order did change, but by addition, not by replacement.

Remember The Ascent of Man, by Jacob Bronowski (BBC, 1973)?  He created the BBC TV Series, and then wrote the book (a must-read for any mature human).  His comparison of television and book is here (screenshots from Google Books):





I have not seen a neater comparison between television and the book.  But note: they both add to each other, the book (which came earlier) is not replaced by TV.  

After TV, we had on-demand TV, videotapes and discs, and then the internet.  Each item added to our ‘order’, it did not replace it.

We cannot hear the views of Dr Bronowski on the current order!  He died in 1974.

When I created the MOOC: ME209x Thermodynamics, I realised that it does not and will not replace any course, any series of lectures, or any book.  It may be considered as another book in a library.  Some ‘students’ will browse through it, some will taste it, some will swallow it, and a few will chew it and digest it (after Francis Bacon:Of Studies).  We have done that with so many books (of all kinds).

The current situation: we are trying to replace real classes with online ones.  The idea of replacement is not correct.  Online lectures, video-recorded lectures, etc.will only add to our repertoire, it will not replace it or even change it significantly.  Ditto for evaluation, examination, ... .



Tuesday, May 5, 2020

Arrangement of Books in a Library

A few days ago, there was an item the BBC website:

Coronavirus: Library books rearranged in size order by cleaner

The title says it all, but one has to look at the photo to appreciate the result.

During the lockdown, a team of cleaners went through the shelves and re-arranged all books in the order of their heights!

This may be shocking for regular users of the library.
But that set me thinking:

When books are arranged in topic-order (typical for a scientific/technical library, which uses a coding, e.g. the UDC), the result is an arrangement with random heights.   However, this is very convenient for people (students/teachers/readers) to find books on a particular subject, field, or topic.

However, this means that the vertical spacing between shelves is dictated by the tallest book, and hence lots of empty space is also 'stored'.  This may be considered a waste of space - a scarce resource in many places.

Suppose the whole library arranges books by height.  That means, jumbled up w.r.t. subject, etc..
But on a given shelf, there will be books of almost the same height.  That means, we can adjust the empty space above them to the minimum, and thus store more books!  The library will now need less overall space.  Or, in a given space, we can store more books.

There is another advantage of this.  Serendipity and happiness will increase.

Consider the scene: I visit a library, I go through the indices (necessary now), and find that the book on Thermodynamics that I want to access is on Shelf 23B4.  I go there, and find the book I need.  However, there is a good probability that surrounding that I find a novel that I wanted to read (say Jules Verne's Around the World in Eighty Days).  I am happier, and my life is richer.

As a result of this, engineers may look at fiction, they may also read some sociology!  You can extend this and imagine yourself in such a library.  Communication between scientists, engineers, sociologists, economists, and laypeople will improve.

Does any small library want to try this out?  I will help out.  And, the reduction in space will be nicely quantifiable!