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Sunday, November 19, 2017

Tuesday, November 14, 2017

The Da Vinci Code by Dan Brown # Review



I did not wish to write a review about this book, highly belated though if the launch time is considered, but I am just willing to state a few things about this book. Quite serendipitously I happened to watch the movie the same day I finished the book. As with most, there is a lot of difference between the movie and the book - the pace, especially. To some extent the character, dialogues and editing of the episodes are nearly the same. While it took a lot of time to finish the book, the movie finished in just more than two hours.

The book or the movie is not for those who feel spiritually insecure and are not open to listening to thoughts apart from what they learn from their 'faith' when growing up.

The Priory of Sion, Opus Dei and the Holy Blood or Holy Grail were the terms new for me and the entire book revolved around this. The only grace I found was over the mention of Fibonacci Series, radio deciphering, Vinegar, Papyrus and of course, the symbology. Newton's apple finds a mention, albeit not in the right tone.

The overall write up is good, though a bit 'elastic' at places. Some phrases like "Men go to far greather lenghts to avoid what they fear than to obtain what they desire.." and "...when the question has no correct answer, there is only one honest response. The gray area between yes and no. Silence...." caught my literal attention.

The only new 'concept' I learnt was there is always some hidden or crypted meaning in a painting. Watch the movie if you cannot read the book, where the climax, though, is not impressive. Thus, too, the last pages of the book also warranted fast reading.

Overall, refreshing.

The Constants of Nature by John D Barrow #Review




The story begins with the seemingly temporal question of what we mean by a meter or a kilogram. The French Revolution facilitated the first moves towards an egalitarian standard of weights and measurements; a bar of platinum was housed in the archives of the French Republic against which a meter could be measured. As the bar was handled, it began to shrink over time so scientists were soon on the look-out for a better method. Then there is this interesting mention of the Lockheed-Martin that controlled the day-to-day operations of a Mars mission in 1998. While it was sending data in Imperial units (miles, feet, pounds), NASA was assuming them in metric (meter, kilogram etc) and the result - $125 million space craft became part of Martian dust as the mis-calculation did not eject the space craft in the right time (The spacecraft was 60 miles above the Surface - 60 KM is a different entirety)

The introductory chapter stressed on the need to have good constants for understanding the Universe, like the velocity of light, gravitational constant etc.The numerical value of the weight of an electron will vary according to the units used. If instead you ask how much heavier is a proton when compared to the weight of an electron, you get a number that is independent of units. This number, approximately 1836, is an example of one of the "constants of nature". The value is Universal and is quite similar to what we use as 'equivalence' in Chemistry and amu in Nuclear Chemistry.

A small change in the relative weights of the electron and proton would result in atoms flying apart (Read: one of the fundamental forces of nature). There would be no possibility of gluing these fundamental particles together to make atoms and ultimately life (Haven't we discovered more precisely recently). The "Superhuman standards" discusses well the constants 'c' and 'h', with a few anecdotes from Einstein and Planck. Both of these are highly essential in present day science.  The need for Quantum Region is well discussed by an illustration with some light on Heisenberg's Uncertainty 'throw'. The book is filled with some very good quotes and here is one I liked:

Here lies John Bun,
Who was killed by a gun,
His name was not Bun, but Wood,
But Wood would not rhyme with gun,
but Bun would.

And this infinite calculation of the number of protons in the Universe by Arthur Eddington was baffling:

"I believe that there are 15,747,724,136,275,002,577,605,653,961,181,555,468,044,717,914,527,116,709,366,231,425,076,185,631,031,296 protons in the universe and the same number of electrons."
This might be not a correct number because we do not know the geometry of the Universe, but if it was derived from some other constant, may be he was true.

In the last part of the book, there is certain amount of mathematics that did not go well with me, but I felt that a lot of hard work has gone into the collection of some beautiful information. The Eddington's Unfinished symphony, The Mystery of Very large numbers, Biology and stars, The Anthropic Principal, Altering Constants and re-writing History, New Dimensions and Variations on a
Constant Theme are a few chapters that carry good reference and sketches along with some useful quotes.

With description of lots of constants around the science of Physics, the author seems to throw lot of light on the construction of Universe and suggests us to observe the same and verify what happens or what would happens if constants change! The change may at be any distant digit from decimals. With the anthropic principle at the helm of the discussion, we need to listen to what these values signify.

The book fluctuates between moments that are profoundly life-affirming and others that are deeply depressing, with sentences such as: "If the constants of nature are slowly changing then we are on a one-way slide to extinction."

This isn't just extinction because the Sun will eventually swallow us up: we still have some hope of avoiding this minor event in the history of the universe by making it to another star-system. We are aware, for example, that without the Earth's natural magnetic field, our atmosphere would be stripped
away by solar winds? Such is the fate of Mars, which has no magnetic field and which is why it appears 'red'.

The dimensionless constant appears to show some sanctity. Time variation of fundamental constants is subjected to theoretical and experimental research by a number of physicists such as; Arthur Eddington, Paul Dirac, George Gamow, Robert Dicke, Brendan Carter, Paul Ehrenfrest and others. The fine-structure constant was originally introduced in 1916 by Arnold Sommerfeld, as a measure
of the relativistic deviations in atomic spectral lines of the Bohr's atomic model. This constant is interpreted as a measure of electromagnetic force that holds the atoms together or the strength of the interaction between electrons and photons; the ratio of two energies, the energy needed to bring two
electrons from infinity to a distance against their electrostatic repulsion, and the energy of a single photon. It is also defined as the ratio of the strengths of the electromagnetic and gravitational interactions. This constant is a dimensionless quantity (1/137.035999679); hence its numerical value is independent of the system of units used.  It is increasingly becoming apparent to a few physicists that some fundamental constants such as the speed of light (c), fine-structure constant, proton-
electron mass ratio, and gravity (G) have changed over the last 13.7 billion light years.

What is not understandable by the humans is the 'fashion' of the Universe provided there are numbers attached to it.  The author delivers his last paragraph with a prediction that one day the numbers would prove to be some 'PIN' numbers or bar-codes that should help unlock the Secrets of the Universe. The last part of the book has abstracts which carry the gist of the all preceding chapters. You can recollect what you have read or forgotten through these pages. A baffling amount of reference has gone into the writing of this book, so that it is prudent to go after the book with a valid reason.

Monday, November 6, 2017

The Golden Ration by Mario Livio - #Review

                           
         
Spread over nine chapters, this book proved to be an excellent 'thesis' on the 'ratio' φ. What more should one expect when Livio ventures into how and why 'phi' was introduced as he takes us through History, Art, Architecture, Mathematics, Physics and Biology and correlates the values reasonably.
Euclid was supposed to have discovered this relationship that Pythagoras also endorsed : 1.6180339887, also ad infinitum. Dubbed the "Golden Ratio" or the "Golden Number," he explains the harmonious geometrical characteristics in everything from pentagrams to the petals of a rose. The 'pi', altogether a different geometrical aspect is not to be confused with this number. Here the division of a line by Euclid into two parts such that the ratio of the larger part to the smaller gives a ratio of the whole line to the larger part.
Astronomer Johannes Kepler, who saw φ as the greatest treasure of geometry and Mathematician Leonardo Fibonacci of Pisa have been quoted in the beginning of the book with ample examples which cannot be mentioned in the review. However, here is a list of few things that have been discussed alongside (satisfying φ )
The Babylonians
Binet formula
Cubism
Egyptian Monuments
Euclid's definition
Flower petal arrangemnt
Galaxy
Great Pyramid of Khufu
Islamiah Mathematics (Al-khawrithm)
Kepler's laws
Lenonardo da Vinci (and his paintings, of course)
Music
Pacioli
Parthenon
Penrose Tiling
Pentagon
Phyllotaxs
Platonic solids
Poetry!
Quadratic equations
Quasi-crystals
Spirals (ubiquotous)
Stock market analysis
Violin Construction
There is mysticism at a few places. For instance it talks about the “mystical” properties of integer like 666, the number of the beast; there is this formula relating 666 and phi. I am not sure how sin 666? + cos(6 × 6 × 6)? gives a “good approximation” of the negative of phi. Added to this is a mention that President Ronald Regan changed his address from 666 in California to some 668!
Now, if you are a Physicist, you would find solace in 'Uncertainty Principle' along with hefty paradoxes supporting your claim. However, the author gives ample reference and at times the conclusion drawn is unconvincing.
There is a lot mention about the 'Golden Rectangle'. If you do a Fibonacci google under the image tab, you would get a lot of these and could find several examples. These are amazing given the fact that the author has found so much time and curiosity to come out with these conclusions. One can then create a spiral of smaller such rectangles that converge to a point which he calls “the Eye of God”.
The Bernoulli's brief histoy also caught my attention. The family is supposed to have contributed much to science in those days that also saw rivalry among themselves. A logarithmic spiral on the tomb of another Bernoulli is quite an interesting mention.
The final chapter of this book is also another book (Is God a Mathematician). In this chapter Livio looks at the idea, in a 'soon-to-be-published' scientific book (a review I have already done, because the order of my reading is not chronological with publications). Here he mentions that all of physics could be modeled by computer programs instead of mathematical equations. Quite incidentally there are a few themes common in both books, but in IGAM, the author talks more about Physics, Universe and Gravity. He considers man-made axioms at the most basic level; however, once those basic axioms were chosen they had consequences which affected the development of the entire mathematical system we know today. For example, we say that 1 + 1 = 2 because we live in a Universe of discrete objects. But suppose we were all blobs of liquid living in a liquid world. Then one blob and another blob would merge together to form one bigger blob. In such a world we might say that 1 + 1 = 1, and our entire mathematical system would be radically different. You would appreciate such ideas if you are passing through Quantum Tunneling.
Good read, finally.

#The_Laws_of_Human_Nature by Robert Greene - Review

       This is another book that I would classify under the 'fast-read' category because of its narration about human tendencies rat...