Is God a Mathematician - by Mario Livio - Review

As the title suggests, the main theme of the book represents the existence of various factors that describe how we should approach mathematics. The conclusion drawn has two things: formalism (claiming that Maths is invented by the human mind) and Platonism (regarding mathematics as an a priori universal language whose truths are merely discovered).
Being a senior astrophysicist at the Hubble Space Telescope Science Institute and author of a few other math books aimed at the general public, Mario Livio has written a short, accessible, and in many ways profound exploration of the nature of mathematics. He centers his book around two questions:
1. "Is mathematics ultimately invented or discovered?" and
2. "Why is mathematics so effective and productive in explaining the world around us that it even yields new knowledge?"
He frames his inquiry with what physicist Roger Penrose describes as the triple mystery. The idea is that there are three worlds that people experience: the world of physical reality, the world of our minds, and the abstract world of mathematics. Then the mysteries are as follows:
1. why would world of physical reality give rise to our minds that perceive the reality?
2. why would our minds give rise to abstract mathematics? and
3. why does mathematics so effectively describe the physical reality in which we exist?
There are several occasions whereby the author proves the existence of maths that has been 'discovered' - just like Shakespeare did not 'invent' Hamlet. There is stress on the statistical part of the Mathematics and syllogism at the beginning. Aristotle, Archimedis, Dante, Descartes, Galileo, Copernicus, Kepler, Tesla, Bernoulli's, Mendle, Gauss,....everyone's contribution has been dealt with suitably in a lucid manner.
Each chapter discusses important topics like geometry, logic, topology, statistics and probability theory, as well as major breakthroughs in adjacent fields – such as physics or astronomy. The narrations are easy to follow and the overall tone is objective. Unlike many popular science books that tend to get tedious or uninteresting after the first few chapters, it has a good structure and can keep the reader engaged.
Talking about the Natural Selection (of Darwin fame), the author argues that if there was no society and everyone was mere re-producer (of the next generation), then there would be no selection at all!
That would mean that a marriage in a society allows the genes to 'sense' the order and promote genes that is not defective for the next generation.
The next beautiful thing I liked about was the 'golden ratio' concept. There are many examples, including the human hand and the face where one part is longer than the other (in a single entity) and a mere mathematical division gives the value of 1.6xx which is abundant in nature (just like the pi).
Discussing about the relationship between Mathematics and Logic, there is good mention about the "barber paradox" by Bertrand Russel. The most excellent example is one around De Morgan, a Mathematician. When asked about his age, his reply was "I was x years old in the year x^2". It turns out that his age was 43 and 43x43 gave 1849. 1849 - 43 thus gave 1806, the year in which he was born!
George Boole, on whose adjectives we have based our Computer Science Syllabus gets his due with a brief mention about his logic using mathematics. The famous 'Gordian Knot' is used to describe the logic and perturbation of various knots. I had to explore a new science behind the knots. (Haven't we come across various knots undone by magicians? But then we never thought there is Mathematics behind it).
A mathematical model of the atom that turned out to be wrong turned into the pure mathematics of knot theory, which then yielded the key to understanding the structure of DNA. As Livio surveys the field, he exhibits a charming sense of surprise at each unexpected turn in the problems he’s describing.
Slowly, the impact of language is brought in to suggest how language is useful in making one understand the logic behind every action. "You cannot repair a Hoover Dam, using a chewing gum" - a blistering example of how easy it is for us to understand the sentence and the 'logic' behind it. Einstein thus insisted that mathematics is a creation of the human mind, abstracting from messy reality to invent a language whose implications can be unspooled in an imaginary realm of perfection.
He ends with the following quote from Bertrand Russell's "The Problems of Philosophy":
"Thus to sum up our discussion of 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 is also rendered great, and becomes capable of that union with the universe which constitutes its highest good."

Anti-matter by Frank Close - Review

After reading his book "Void", I was tempted to know how he would fit "Anti-matter" to it. And it turned out to be a sequel (or rather answer) to the non-fiction writers from whom some film makers got the clue that America was developing "antimatter" weapons and made movies and documentaries that were nearly taken as true. The Antimatter is one of the strangest discoveries in physics - an opposite to the 'normal' matter which makes up the world in which we live our everyday lives, and which annihilates anything it touches in a blinding flash of energy.
Comprising Nine chapters, most of them start with questions or hypothesis or rumour. And it is too good that the answers come out explaining many things about Physics even for the lay man. The Tunguska event, where there was a blast in the sky in 1908 without any debris or crater to its credit is thought to be a fusion of matter with antimatter. Though this is the Close's view, there is no solid proof of this, I found.
Then there is this 'philosophical' approach towards the lives on Earth. Describing humans as "Nuclear Waste", the author writes "Oxygen you breath, Carbon in your skin, ink on this page etc. was made of stars about 5 billion years ago. To an extent this is a fact that one atom in our right hand might have a different parentage than those in the left. There is mention about the Nobel prize for the discovery of positron. The diagrams on waves and loops are interesting. There is also mention about LHC, but here in this book I came to know that it was earlier called as LEP (Large Electron Positron Collidor).
Dirac's famous equation "i*gamma*dow sigh= m sigh" is discussed with slight hinting that this might have been the foundation for Schrodinger's solution to the energy of the particle. The most interesting part in this is the description that a^2=1; b^2=1 and aXb is not zero, that is their sum axb+bxa =0, is dealt with solution in matrices. The matrices and determinents form the basic parts of quantum mechanics.
Anderson's experiment on positron trapping and Millikan's one on charge determination are described well with illustration. Blackett's study of about 20,000 photos of the 'waves' from 1921-24 suggests how hard work one has to do come up with one small discovery - the identification of Positron!
Annihilation is dealt with at large in one of the chapters where the author writes "We breath in oxygen , exhale carbon di oxide, grow and die, but the atoms will continue" delivers the fact of our existance on earth. There is brief description into other particles like gluon, W, Z etc.
I found Feynmann in a slightly poor light when there is mention about his reason for not publishing the famous eponymous diagrams in some leading journal. He says that it was war time when drawing experts were not available. The easy diagrams, the author claims, could have been drawn by himself easily, but for 'stealing' work he did from Stueckelberg's idea. There are many such instances in science where ideas have been stolen.
The last two chapters describe particle Physics/Chemistry, call it the way you like about these ubitquitous fermions. The Tunguska event is again brought back to prove that anti-matter weapons would be impossible on paper given the fact that 1g of antimatter can be produced per year by present set up of the advanced lab elsewhere. Close explores many of the theories surrounding the symmetries between normal matter and antimatter, as well as offering some thoughts on why we might see a universe which appears to be largely devoid of antimatter. While a small handful of antimatter particles have been created in labs around the world, as well as a few dozen antihydrogen atoms, the mysterious lack of antimatter in the universe remains one of the questions needing a great deal of further research to explain.
The appendix is very informative, especially the Dirac code and the poser to arrive at a^2=1; b^2=1 and aXb+bXa=0, whose solution can be found using Matrices. The book is good if you like particle physics and are a layperson with regard to science.
”If you want to use antimatter you must first make every antiparticle" - which is a very inefficient process.

Molecules of Emotion - The Science behind Mind-body Medicine - C B Pert - Review


Initially, with the start of the book, one would feel the socio-political pinch he/she would undergo on the pathway to a Ph.D work followed by publication of a paper in reputed journals. There are lots of places in this book that describe the ordeal of a Ph.D student in science and does not sound interesting. A few chapters, thus, could be ‘fast-read’.  However, there are a few enough new facts, metaphors and speculations in this book to astonish many readers. The field of psychoneuroimmunology, although based on exacting research, has had a hard birth. Its core idea is that the surfaces of cells are lined with many specific "receptors" to which only specific molecules can attach themselves. These molecules, in turn, are messengers through which the body and mind, as well as our neurons, glands and immune cells, are all constantly sharing information.  It is so good to read about “information flow”, that is also a severe subject among the cosmologist and quantum physicists alike.

At its best, Molecules of Emotion is a lucid explanation of new research on the way peptides work to connect all aspects of body and mind in a network of shared information. To cite only an example, Pert explains: "For decades, most people thought of the brain and its extension the central nervous system as an electrical communication system . . . resembling a telephone system with trillions of miles of intricately crisscrossing wires." But new research techniques for studying peptides and receptors show that only 2 percent of neuronal communications are electrical, across a synapse. In fact, she writes, "the brain is a bag of hormones." And those hormones affect not only the brain, but every aspect of body and mind; many memories are stored throughout the body, as changes in the structure of receptors at the cellular level. "The body," Pert concludes, "is the unconscious mind!"

A major part of the book is about publication and persuasion of the work with the top scholars. That a peptide can block the proliferation of HIV was not reproducible at many drug labs leading to rejection of the AIDS drug which actually took the toll of the author.  The last part of the book thus deals with Meditation, Energy flow, positive thoughts and Right food, which is in a sense very much essential to all the learners given the stressful life everyone is facing each day. From political lessons to science of the brain and its training for a stress-free life, this book would prove very useful to science students in particular and all learners in general.  The days can always start with positive notes instead of chorus on chalant issues such as hell, devil, jealousy, prejudice, etc.

Here is what the chapters have to say:
Cell receptors are the interface between emotions and tissue. The cell’s brain is the receptors that float on its membrane. A neuron (nerve cell) may have millions of receptors. Candace Pert has spent her life as a scientist researching the receptors that sit on the cells. She explains how they work in the first chapter of her book. A receptor is a single molecule made up of strings of amino acids, like beads on a necklace, perhaps the most complicated molecule there is. (The 20 known amino acids make up protein and are manufactured in the ribosomes found in every cell.) A receptor vibrates and hums as it changes shape, waiting to pick up messages that diffuse through the fluids surrounding the cells. A ligand is the chemical key that fits in the receptor, in a process called binding, “sex on a molecular level.” About 95 percent of ligands are peptides, smaller strings of amino acids. Examples of peptides are insulin and hormones— excluding the steroid sex hormones. The second type are neurotransmitters such as serotonin, usually made in the brain to carry information across the gap (synapse) between neurons. The third type are steroids including testosterone, progesterone, and estrogen. The chemical exchange of information molecules is a second nervous system, and the most ancient. It allows the different systems to communicate with each other (i.e., the endocrine, neurological, and immune).

Paul MacLean first described the brain as having three layers which represent evolution; first, the brainstem or reptilian brain (responsible for autonomic functions such as breathing and body
temperature). The limbic system encircles the top of the brainstem, the source of emotions and where trauma gets stuck. The cerebral cortex in the forebrain is the place we think and reason. Chimps have 99 percent of the same DNA as we do, but they don’t have a developed frontal cortex. It doesn’t fully develop in humans until the early twenties, useful to know when relating to teenagers. The brain’s food is glucose, carried in the blood, which fuels the neurons to secrete messenger chemicals neurotransmitters and neuropeptides) and the glial cells to work on the nerve endings in an “ongoing sculpting of connections.”199 Pert coined the phrase “molecules of emotion” in response to her finding that 85 to 95 percent of the neuropeptide receptors are found in the emotion centers (limbic structures). They include the amygdala (almond-shaped structures on either side of the forebrain, about an inch into your brain from your earlobes), hippocampus, and limbic cortex. Since the 1920s, researchers were able to stimulate strong emotions by electrically stimulating the limbic cortex over the amygdala. Pert’s group of scientists discovered that high concentrations of neuropeptides exist in most locations (“nodal points”) where information from the five senses enters the nervous system. 

Receptors are also found on immune cells for almost every peptide found in the brain. Thus the immune system can send and receive information from the brain via the peptides, and the brain is another nodal point in the network. “Using neuropeptides as the cue, our body-mind retrieves or represses emotions and behaviors,” since change at the receptor level is the molecular basis of memory.200 Memories are stored in the body, as well as the brain, especially in the receptors between nerves and cell bodies called ganglia. We pay attention to some information and ignore the rest, as otherwise we would be overwhelmed. Pert deduces this means memory processes are emotion-driven and that emotions are peptide ligands. “Peptides are the sheet music containing the notes, phrases, and rhythms that allow the orchestra—your body—to play as an integrated entity.” 

Memory and performance are, therefore, influenced by mood. “Emotional states or moods are produced by the various neuropeptide ligands, and what we experience as an emotion or a feeling is also a mechanism for activating a particular neuronal circuit— simultaneously throughout the brain and body—which generates a behavior.”201 Pert believes there is one kind of peptide for each emotion, just as endorphins are the mechanisms for bliss and bonding. We can consciously influence what goes on in the body, as by visualizing increased blood flow into a body part to increase oxygen and nutrients to nourish the cells. Pert believes “repressed emotions are stored in the body—the unconscious mind—via the release of neuropeptide ligands, and that memories are held in their receptors.”202 Emotions, then, “are at the nexus between matter and mind, going back and forth between the two and influencing both.”203 The immune system is composed of the spleen (the brain of the immune system), the bone marrow, the lymph nodes, and various white blood cells. Pert speculates that meridians may be the pathways followed by immune cells. Some of the immune system cells create antibody molecules to engulf bacteria, virus or tumor cells. Scavenger cells (macrophages which begin in the bone marrow as monocytes) clean up the debris after invaders are killed.

Macrophages also repair and heal tissue. Interferons, similar to antibodies, fight invaders, but they’re peptides made by white blood cells called lymphocytes. (Some are B cells, others are T cells). Ed Blalock found they sometimes secrete endorphin (a mood-altering brain peptide) and a stress hormone, which means the immune system acts like tiny pituitary glands.204 Pert and her team found receptors on immune cells for almost every peptide or drug found in the brain. Immune cells make and secrete neuropeptides, the same brain chemicals that control mood. The immune system can send information to the brain with immunopeptides and receive it through neuropeptides which hook up on receptors, the basis for the new study of psychoneuroimmunology. The brain, glands, and immune system are linked in an intelligent information network of neuropeptides and receptors which create emotions. This means “emotion-affecting peptides, then, actually appear to control routing and migration of monocytes, which are very pivotal to the overall health of the organism.”205 For example, in cancer, neuropeptides (which affect mood and behavior) signal the cancer cell receptors and cause them to grow and travel. Thus, cancer can be fought with peptides to block receptors, as when taxofilen is used against estrogen-dependent breast cancers. Viruses use the same receptors as neuropeptides to enter a cell.

Even if we don’t understand the details of the interaction between emotions and cell receptors, it’s important for healers to know the connection exists and that it can be influenced consciously. Here’s the quantum physics perspective from Deepok Chopra, MD, based on a talk he gave on November 4, 2006 in Chico. Further information is available in his recent books Book of Secrets and Life After Death, his website chopra.com, and his blog choprablog.com. He started an organization to global peace called Alliance for a New Humanity, ANHglobal.org. Chopra contrasts the new science, based on quantum physics, with the old mechanistic, reductionist, deterministic science which believes the development of life and its evolution over eight billion years was an accident, a product of matter. The new science believes there are no accidents because a consciousness pervades the universe which is not basically matter. Sub-atomic particles are fluctuations of energy, not matter. Our senses fool us into thinking what we experience is solid, predictable, and unchanging. What we perceive as matter is mostly empty with fluctuations of energy, information and intelligence.

In fact, we continually rebuild our bodies as atoms flow in and out, including atoms right now that used to be in the body of Jesus, Buddha, Hitler, etc. We make new skin every month, a new skeleton every three months, new DNA every six weeks, so that by the end of next year we will have replaced 98% of the atoms in our bodies. Everything changes although consciousness or soul outlives the death of molecules. Just as a movie or TV picture and reality itself appears to be continuous, it’s actually flashes of off and on at the speed of light. Without the off we wouldn’t perceive. In the quantum world of the off, there is no energy, information, or space and time, no objects. This is called quantum non-locality, as theorized by Bell’s Theorem and proved to be true in 1998. What exists is waves of infinite possibility where everything is connected and synchronized. This explains how events can happen simultaneously, as in the communication between the 100 trillion cells in the body which perform hundreds of thousands of activities each second. However, in this world of probability nothing is certain (Heisenberg’s Uncertainty Principle). Einstein rejected this notion when Heisenberg presented it to him, saying God doesn’t play dice with the universe. Stephen Hawkins recently said that God does throws dice and, furthermore, places them where we won’t find them. 

Quantum leaps without going through linear space and time provides the basis for creativity in evolution, as when reptiles evolved into birds and chimp ancestors into humans. Einstein’s student John Wheeler said the universe doesn’t exist unless there’s an observer; quantum physics studies the “observer effect” on whether a potential state becomes a wave or a particle. It’s like electricity needs a positive and negative pole to activate. As the observers, we’re thus co-creators with God the creator. The world functions according to these five principles and so does our consciousness or soul, which is non-local or material. We create through uncertainties in a field of infinite possibilities where the space between thoughts is reality, not the sensations. We create our own reality with our thoughts, intention, awareness, what we focus on, and meditative exploration of the inner world.






The Hidden Reality - Brian Greene - Review


In his earlier book "The Elegant Universe" he was after the multi-dimensions of the Universe, stressing upon the unseen factors responsible for several unaccounted observations, including speed of light. A staunch approver of strings theory, he starts with the Theory of Relativity and the Quantum aspects of the observations a Physicist would do to make the educated understand the Universe.
He suggests proof for Multiverse, both Mathematically and logically. For instance using Planck's units he estimates about 10^124 Universes!!! Suggesting, therefore, that we are not alone in the Universe. By the same measurements he estimates the amount of information contained in a region of space stored in any object of any design as always less than the area of the surface that surrounds the region. An example quoted is a hard disk with about 10^70 bits equivalent to about a billion, Trillion, Trillion, Trillion, Trillion Tera bytes!
There is also a similar calculation on the number of operations a brain can (out)perform - 10^14 to 10^17 operations/second, while the fastest Super computer presently can do about 10^12 of them.
Occasional mention about Schrodinger, Bohr, Einstein and Heisenberg adds to the credibility of the book. Bohr, always over Schrodinger, would talk about wave collapse the moment you see it (making it disappear), only to be counter viewed by the famous thought experiment of Schrodinger.
Spread over 11 chapters he describes about Nine type of Universes errr...Multiverse viz:
1. Quilted Multiverse: Conditions in an infinite universe necessarily repeat across space, yielding parallel worlds.
2. Inflationary Multiverse: Eternal cosmological inflation yields an enormous network of bubble universes, of which our universe would be one.
3. Brane Multiverse: In string/M-theory's braneworld scenario, our universe exists on one 3D-brane, which floats in a higher-dimensional expanse potentially populated by other branes - other parallel universes.
4. Cyclic Multiverse: Collisions between braneworlds can manifest as big bang-like beginnings, yielding universes that are parallel in time.
5. Landscape Multiverse: By combing inflationary cosmology and string theory, the many different shapes for string theory's extra dimensions give rise to many different bubble universes.
6. Quantum Multiverse: Quantum mechanics suggests that every possibility embodied in its probability waves is realized in one of a vast ensemble of parallel universes.
7. Holographic Multiverse: The holographic principle asserts that our universe is exactly mirrored by phenomena taking place on a distant bounding surface, a physically equivalent parallel universe.
8. Simulated Multiverse: Technological leaps suggest that simulated universes may one day be possible.
9. Ultimate Multiverse: The principle of fecundity asserts that every possible universe is a real universe, thereby obviating the question of why one possibility - ours - is special. These universes instantiate all possible mathematical equations.
With lots of theoretical information from books and a few movies on science (fiction), this book would make an interesting reading with flying thoughts around the 'Multiverse'.

Survival of the sickest‬ - Sharon Moalem - Review


Running into 8 chapters, the first 3 were very attractive. This should make a good reading both for the beginners and non-science readers. Written in a very simple language the book lacks references or foot notes then and there. A few notes are given at the end of the book, but if that was provided in-situ, the readability would have been enhanced.
Some chapters in the end describe what we call "junk science". The junk science is the 'projected-out' views during the course of a research and at times it would mark serendipity as well. Those events that come in the 'context' of a topic cannot be taken to describe the whole. For instance, diabetes that describes increased incidence of sugar in a human is marked 'favourable' for persons living in cold regions for obvious reasons. A person in cold regions needs to burn more sugar to keep himself warm. But this cannot be substituted as 'evolution' phenomenon in the present context where many in tropical region have acquired this as a result of life-style.
Likewise, the author predicts flaw in evolution, which is not agreeable scientifically. The Evolution theory is still debatable and science has not concretely proved it. That warrants no discussion on a topic related to it. The author attributes 'gender' based on evolution and not on more obvious reasons like 'natural selection' and hormones.
On microbes, the writings are interesting, but I felt a negative approach in describing their existance and functionality. Here is what one can summarize on the book:
Ch.1. Ironing it out
Hemochromatosis is an inherited disease in which the body continues to load up on iron because the mechanism regulating iron has broken down. The suggestion is that natural selection is maintaining this genetic defect because it had conferred some benefit in the past.
The long held tradition of bloodletting to fight disease may therefore have had a good basis in fact after all. Starving infectious bacteria of iron by reducing the amount of blood is the surprising benefit that might explain why people believed in the value of bloodletting for so long.
Ch. 2. A spoonful of sugar helps the temperature go down
Diabetes is a disease where the body fails to remove excess sugar from the bloodstream. Dr. Moalem suggests that excess sugar in the blood could have been selected for in the past because sugar could act like antifreeze in times of extreme cold. Now this is not justifiable in the present day scenario.
Ch. 3. The cholesterol also rises
This chapter mentions about Vitamin D and its tremendous benefit in preventing many diseases, not just rickets. There is enough Vitamin D added to milk to prevent rickets. Those living in northern latitudes are at a disadvantage because several minutes of directly overhead sunshine is what is needed to convert cholesterol in our bodies into enough Vitamin D to have an effect. Taking Vitamin D supplements is also an option, as is an ultraviolet B tanning salon or eating fatty fish as the Inuit do.
While the sun makes Vitamin D, it unfortunately destroys folic acid. Skin colour is the adaptation that balances out the effect of the sun. People with dark skin can protect themselves from folic acid depletion, but they need to carry higher amounts of cholesterol to maximize whatever sunlight gets through the skin.
Surprisingly the author asks us to avoid sunglasses while sunbathing. The pituitary gland is involved in helping produce melanin, which darkens the skin. If the pituitary gland does not get signal from the optic nerve (while wearing sunglasses) then the body will not get the right signal about the direct sunlight.
Ch. 4. Hey, bud, can you do me a fava?
Many plants produce toxins to protect themselves from predators. People with favism cannot clear out the free radicals produced by fava beans because of a genetic deficiency. The free radicals attack red blood cells. It turns out that people with this genetic deficiency end up being more resistant to malaria. Does not sound well with the present day scenario on this disease.
Ch. 5. Of microbes and men
The rod of Asclepius — a symbol depicting removal of the Guinea worm parasite is mentioned here. The chapter makes an interesting reading with microbes such as T.Gondii in cats, D. dentriticum in sheep, H. argyraphaga in spider and common sneezing virus bringing out some spine chilling facts. This section has no references for all the incidents mentioned.
Ch. 6. Jump into the gene pool
Large portions of our junk DNA (DNA that does not code for proteins) are made of jumping genes. Empty space? Retroviruses are made of RNA, and can be written into DNA. HIV is a retrovirus, and the drug “cocktail” therapy used to combat HIV
is aimed at stopping the enzyme that helps the retroviruses become part of DNA.
Ch. 7. Methyl madness : road to the final phenotype
Epigenetics is a whole new field in genetics that is concerned with the study of how children can inherit and express new traits derived from their parents without changes in the underlying DNA. This chapter has more of author's views than science and hence one can lose interest given the way exaggerations are made out of the mutations and telomers.
Ch. 8. That’s life : why you and your iPod must die
Again I would disagree with the author on the theory that is put forth in this chapter. That every cell is programmed for a certain number of multiplications (Hayflack limit) and hence death should come only when this limit is reached, does not hold good in a 'thermodynamic' world where everything is dependent on one's life style, environment and food. That would mean every person should live at least 60 years compulsorily!
Points in favour of the aquatic ape theory that are not strong enough:
– humans are the only land animals with fat attached to our skin (like hippos, sea lions, and whales)
– the ability to survive in both land and water environments has tremendous survival benefits against predators
– walking upright helps in venturing into deeper water and so this is how bipedalism may have come about
– we may have lost our fur so as to become more streamlined in the water
– we have downward-facing nostrils, which allowed us to dive
– the extra fat in babies help keeps them afloat
– newborns don’t start breathing until they feel air on their face, which makes birthing in water very safe, and actually easier on
the mother
– newborns reflexively hold their breath, but they also make rhythmic movements that propel them through the water (a behaviour which lasts about four months)–this makes more sense in the aquatic ape theory than in the Savannah theory

How chameleons change their colour?


With a little help from Raman spectroscopy, Swiss scientists have found the answer to an endlessly intriguing evolutionary poser. 

It turns out that chameleons have a mobile “lattice” of#nanocrystals on the surface of their skin, which come together, change shape and disperse thereby shifting the wavelength of light reflected by the reptile.

Scientists studied the panther chameleon Furcifer pardalis from Madagascar, known for its particularly dynamic colour changing abilities — going from green to red within minutes — especially during social interactions such as courtship or male-male combat. These #nanocrystals — of different shapes, sizes and organizations — are distributed in two layers of skin cells called #iridophores (iridescent light-reflecting cells). While the upper layer of iridophores is responsible for rapid colour change achieved by a shift in spacing of nanocrystals in a triangular lattice, the deeper layer of cells broadly reflects light, especially in the near-infrared range, the scientists report in Nature Communications.

The distance between crystals is on average 30 per cent less in the resting state (blue or green skin) than it is in the excited state (yellow or white). With an increase in distance between nanocrystals in excited male panther chameleons, iridophores shift their selective reflectivity from short (blue) to long (red or infrared) wavelengths, causing the corresponding shift from green to yellow/orange skin, says the paper.

Chameleons originated in post-Gondwanan Africa around 90 million years ago. The way these iridophores are organised allows some species “to combine efficient camouflage with spectacular display,” while also potentially providing passive thermal protection.

Read more about this here: http://www.nature.com/ncomms/2015/150302/ncomms7368/full/ncomms7368.html

‪‎Physics of the Impossible by Michio Kaku - ‪Review


The "impossibilities" in Physical Life have been narrated well with skirmishing incidents of the Bohr-Einstein-Schrodinger era debates that are found written in many books. But Michio Kaku takes the reader beautifully into some impossibilities predicted by Physics which could become possible in the years to come (I am yet to read his book "Physics of the Future"). Occasionally a few pages are very
interesting, nevertheless, the reader is never distracted. Quotes from Bohr, Pauli, Sagan and others are very interesting. The analysis about symmetry on which physics is now based and the nature's laws connected with predators and preys are very reasonable. The prey is always faster than the predator!
A few classifications are significant:
"Class 1 Impossibilities: These are technologies that are impossible today but that do not violate the known laws of physics. So they might be possible in this century, or perhaps the next. They include teleportation, anti-matter engines, certain forms of telepathy, psycho kinesis, and invisibility.
“Class 2 Impossibilities: These are technologies that sit at the very edge of our understanding of the physical world. If they are possible at all, they might be realized on a scale of millennia to millions of years. They include time machines, the possibility of hyperspace travel, and travel through wormholes.”
“Class 3 impossibilities: These are technologies that violate the known laws of
physics. Surprisingly, there are vary few such technologies. If they do turn
out to be possible they would represent a fundamental shift in our understanding of physics.”
And the Civilizations that would bother these:
Type 1 civilization: Those that harvest planetary power, utilizing all the sunlight that strikes their planet. They can, perhaps, harness the power of volcanoes, manipulate the weather, control earthquakes, and build cities on the oceans. All planetary power is with in their control.
Type 2 civilization: Those that can utilize the total power of their sun, making them 10 billion times more powerful then a type 1 civilization. A type 2 civilization in a sense, is immortal; nothing known to science, such as ice ages, meteor impacts, or even supernovae, can destroy it.
Type 3 civilization: Those that can utilize the power of an entire galaxy. They are 10 billion times more powerful then a type 2 civilization. The Borg in Star Trek, the Empire in Star Wars, and the galactic civilization in Asimov’s Foundation series correspond to a type 3 civilization. They have colonized entire star systems and can exploit the black hole at the center of their galaxy. They freely roam the galaxy.
This apart, his views on Ramjet, Telepathy, Force Fields,Invisibility, Energy Weapons, Teleportation, Psychokinesis, Robots, UFOs & Aliens,Space Travel (including Faster Than Light travel & Particle) Parallel & Alternate Universes, Time Travel, Perpetual Motion Machines, Precognition, Parallel Universe and perpetual motion, make the book very interesting one.
The ‪#‎Quantum‬ era incidents including the Dirac's ignorance to patent his equation on ‪#‎Relativity‬ theory, because of which gadgets exist in our hands, truly refresh our sense of inclination towards Physics, in particular and Science, in general.
That the entire Universe/Multiverse has dark energy to about 73%, with the energy by humans amounting to only about 0.03% is truly astonishing (while computing zero point energy) and shows the long way one has to cover to understand the Creator.

Valences of the Elements

Chemistry of the Periodic Table
Many people believe that the valences of the elements are those which can be derived by looking at the Groups (columns) of the Periodic Table. It is true that these are the most common valences, but the real behavior of electrons is less simple. Here is a listing of element valences. Remember that an element's electron cloud will become more stable by filling, emptying, or half-filling the shell. Also, shells don't stack neatly one on top of another, so don't always assume an element's valence is determined by the number of electrons in its outer shell.
NumberElementValence
1Hydrogen(-1), +1
2Helium0
3Lithium+1
4Beryllium+2
5Boron-3, +3
6Carbon(+2), +4
7Nitrogen-3, -2, -1, (+1), +2, +3, +4, +5
8Oxygen-2
9Fluorine-1, (+1)
10Neon0
11Sodium+1
12Magnesium+2
13Aluminum+3
14Silicon-4, (+2), +4
15Phosphorus-3, +1, +3, +5
16Sulfur-2, +2, +4, +6
17Chlorine-1, +1, (+2), +3, (+4), +5, +7
18Argon0
19Potassium+1
20Calcium+2
21Scandium+3
22Titanium+2, +3, +4
23Vanadium+2, +3, +4, +5
24Chromium+2, +3, +6
25Manganese+2, (+3), +4, (+6), +7
26Iron+2, +3, (+4), (+6)
27Cobalt+2, +3, (+4)
28Nickel(+1), +2, (+3), (+4)
29Copper+1, +2, (+3)
30Zinc+2
31Gallium(+2). +3
32Germanium-4, +2, +4
33Arsenic-3, (+2), +3, +5
34Selenium-2, (+2), +4, +6
35Bromine-1, +1, (+3), (+4), +5
36Krypton0
37Rubidium+1
38Strontium+2
39Yttrium+3
40Zirconium(+2), (+3), +4
41Niobium(+2), +3, (+4), +5
42Molybdenum(+2), +3, (+4), (+5), +6
43Technetium+6
44Ruthenium(+2), +3, +4, (+6), (+7), +8
45Rhodium(+2), (+3), +4, (+6)
46Palladium+2, +4, (+6)
47Silver+1, (+2), (+3)
48Cadmium(+1), +2
49Indium(+1), (+2), +3
50Tin+2, +4
51Antimony-3, +3, (+4), +5
52Tellurium-2, (+2), +4, +6
53Iodine-1, +1, (+3), (+4), +5, +7
54Xenon0
55Cesium+1
56Barium+2
57Lanthanum+3
58Cerium+3, +4
59Praseodymium+3
60Neodymium+3, +4
61Promethium+3
62Samarium(+2), +3
63Europium(+2), +3
64Gadolinium+3
65Terbium+3, +4
66Dysprosium+3
67Holmium+3
68Erbium+3
69Thulium(+2), +3
70Ytterbium(+2), +3
71Lutetium+3
72Hafnium+4
73Tantalum(+3), (+4), +5
74Tungsten(+2), (+3), (+4), (+5), +6
75Rhenium(-1), (+1), +2, (+3), +4, (+5), +6, +7
76Osmium(+2), +3, +4, +6, +8
77Iridium(+1), (+2), +3, +4, +6
78Platinum(+1), +2, (+3), +4, +6
79Gold+1, (+2), +3
80Mercury+1, +2
81Thallium+1, (+2), +3
82Lead+2, +4
83Bismuth(-3), (+2), +3, (+4), (+5)
84Polonium(-2), +2, +4, (+6)
85Astatine?
86Radon0
87Francium?
88Radium+2
89Actinium+3
90Thorium+4
91Protactinium+5
92Uranium(+2), +3, +4, (+5), +6

Reference: Lange's Handbook of Chemistry, 8th Ed., Norbert A. Lange (Ed.), Handbook Publishers, Inc. 1952.

I can never forget this great man

While I was struggling to find out a method related to spectroscopic technique in Computational Chemistry, many Indian Scientists deliberately delayed disclosing the same for reasons better known to them. Quite reluctantly I just shot a mail to PvR Schleyer (on whose references I built up my PhD thesis) and wanted to forget the whole episode of requesting with our fellows. And to my surprise, I got a reply from him in minutes!!! He did not know me, but for the sake of 'humanity', perhaps, he elaborated the technique with an example!

He has died a few days back, on 21st November, at his home in Ila, Georgia, US.

He has published 1271 papers and is the third most cited Chemist in the world of Modern day chemistry. Paul von Ragué Schleyer, 84, a towering figure in physical organic chemistry and a chemistry professor at the University of Georgia, in Athens is no more.

Delving into a broad range of physical organic, organo-metallic, inorganic, and theoretical chemistry topics, Schleyer made vast contributions, including discovering ways of synthesizing adamantane and other cage molecules by rearrangement. He also identified new types of hydrogen bonding, elucidated solvolysis mechanisms, and expounded on the nature of reactive intermediates.

Schleyer discovered new molecular structures, particularly those involving lithium and electron-deficient systems. Most recently, he focused on nuclear magnetic resonance, aromaticity, and planar hypercoordination of carbon and other elements.

His home page: http://schleyer.chem.uga.edu/ 

You are here - Chris Hadfield - Review



Around the world in 92 Minutes!

We have read "Around the world in 80 days", and at first this title appeared a sequel to that. But it is not so. The vintage book is about sea voyage and has many fictitious characters and incidents.

This one is real. Hadfield has done extensive research after taking about 45000 pictures from the ISS and has chosen only the best and intriguing ones. The book is very simple and dwells on the nature of the Earth's structure and has many historical references as well.

The book shows our home, our city, country, continent, our whole planet - from a unique perspective. It was actually Chris's Twitter feed from the ISS. This photo documentary shows us we didn't really understand what we saw from his tweets. We caught the beauty but missed the meaning. Curated from images never before shared, Chris's big picture reveals why our planet looks the way it does and why we live where we do. Chris sees more in these images than we do, not just because he's spent months in space but because his in-depth knowledge of geology, geography and meteorology allows him to read the mysteries the photos reveal.  His most beautiful explanation I liked was over the eye of the Sahara Desert - The Richat Structure in Mauritiana.

Present tweets from Alexander Gerst and Reid Wiseman (returned 10th Nov, 2014) also conform to this fact, but Hadfield has made a mark.

If you want to see how the world really looks like from a height of about 450 Km, and appreciate the art work of our Creator, then this book is for you. Enjoyed every photo and the fascinating commentary.

You Are Here: Around the World in 92 Minutes: Chris Hadfield, Random House Canada

#The_Singularity_is_Nearer: When we merge with AI - Ray_Kurzweil - #Review

    The book starts with “where we stand” in terms of epochs with the present one being a merger of bio-science with technology. The idea th...