Dr Rajiv Desai

An Educational Blog

DERAILMENT

DERAILMENT: _______ _______ Prologue: A tremor was followed by a “loud sound like an earthquake”. The carriages began to shake and inside them, passengers began falling on each other. Some carriages telescoped into each other, others rose vertically, “almost standing upright”. In a major train derailment accident, at least 23 passengers were killed and over 60 injured when 14 coaches of the Puri-Haridwar Utkal Express jumped the rails in Khatauli, India at 5.45 pm on19 August 2017 as seen in the figure above. Indian Railways has had the most derailments in a decade in 2016-17: 78 derailments with 193 people dead. On September 14, 2017 (coincidentally my birthday) Indian Prime Minister Narendra Modi and Japanese Prime Minister Shinzo Abe laid the foundation stone for $17 billion bullet train, the Jammu Tawi-New Delhi Rajdhani Express jumped the tracks at New Delhi station, the ninth derailment in 27 days, a consequence of […]

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HEARING AID

HEARING AID: _______ _______ Prologue: I was working in Saudi Arabia as a doctor from 2001 to 2006. I was designated female medical specialist. All female medical patients used to come to me for treatment. I noticed that I cannot hear properly what they say. The language barrier and lack of lip reading (Muslim women wear burka covering their face) compounded hearing disability.  I got myself checked and found that I was suffering from otosclerosis. I started wearing hearing aid which improved my hearing significantly. Although one should remove hearing aids while sleeping at night, I used to wear hearing aid in one ear and sleep on side with ear having hearing aid on the top to attend night calls for emergency. In 2007/2008, I got operated in both ears, and after surgery my hearing improved so much that I did not need hearing aid. Hearing is one of the […]

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THE ATOM

___________ THE ATOM: ___________ The figure above is an animation of the nuclear force (or residual strong force) interaction between a proton and a neutron. The small colored double circles are gluons, which can be seen binding the proton and neutron together. These gluons also hold the quark-antiquark combination called the pion (meson) together, and thus help transmit a residual part of the strong force even between colorless hadrons. Quarks each carry a single color charge, while gluons carry both a color and an anticolor charge. The combinations of three quarks e.g. proton/neutron (or three antiquarks e.g. antiproton/antineutron) or of quark-antiquark pairs (mesons) are the only combinations that the strong force seems to allow. ________ Prologue:  Since childhood I was curious about breaking down any matter (table/chair) into smaller pieces continually till I reach a point where it cannot be broken down. What is that point? Is matter infinitely divisible?  […]

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SCIENCE OF LANGUAGE

_ SCIENCE OF LANGUAGE: _ The figure above shows English to Gujarati mappings for consonants: _________ Prologue: Human life in its present form would be impossible and inconceivable without the use of language. To the question: “Who is speaking?” Mallarme, the French poet, answered, “Language is speaking.” The traditional conception of language is that it is, in Aristotle’s phrase, sound with meaning. Everybody uses language, but nobody knows quite how to define it. Language is arguably the defining characteristic of the human species, yet the biological basis of our ability to speak, listen and comprehend remains largely mysterious; about its evolution, we know even less. The origin of language is a widely-discussed topic. Whole doctorates have been based on it, thousands of books have been written on it, and scholars continue to argue about how and why it first emerged.  Many animals can communicate effectively with one another but humans […]

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SCIENCE OF LOVE

__________________ SCIENCE OF LOVE: _______________   In a study published in the Proceedings of the Royal Society, one researcher likened love at first sight to narcissism, because it turns out what we’re most attracted to is someone who happens to be looking at us. Again, this has evolutionary roots, as we shouldn’t spend time chasing a mate who’s not interested, but it’s narcissistic because the person we tend to look at, of course, looks like us. It’s like falling in love with your own image in the mirror as shown in the figure above.   _______ Prologue:  Shruti Hassan says that she is my fan. Esha Gupta wants to frustrate me. Is this love? Well, they are playing safe. If you have a reason why you love someone, it is not love. You can’t have a reason for loving someone, it just happens and you know it…..Love is an extremely […]

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