Archives de la catégorie: Topique

Comprend messages sur la physique, philosophie, sciences, finance quantitative, économie, environnement etc.

When Your Child is as Big as You

My mom used to say that when your child is as big as you, you have to treat them with respect. What she actually said was that you had to address them using a respectful form of “tu,” which doesn’t make any sense in English, but may work in Hindi or French. It worked poetically well in Malayalam. I was reminded of this maternal pearl of wisdom recently when I was watching a movie with my son.

contradictions,,en,La vie est pleine de contradictions,,en,Je participe à une retraite de recherche sur les pratiques de pleine conscience et contemplatives à la belle,,en,Institut Garrison,,en,J'apprends beaucoup de choses intéressantes,,en,et rencontrer beaucoup de,,en,comme d'esprit et d'excellentes personnes,,en,le genre de personnes avec qui je pouvais avoir une conversation profonde sur la nature irréelle de la réalité,,en,contrairement à la plupart des gens d'autres horizons de la vie serait poliment et avec tact s'excuser quand je suis un peu irréel,,en,Une expérience pédagogique,,en,Je viens de terminer mon premier mandat en tant que professeur à l'Université de gestion de Singapour,,en,J'ai enseigné un cours de premier cycle appelé ordinateur comme un outil d'analyse,,en,qui est sur la modélisation des entreprises et aide à la décision axée sur les données,,en,J'avais sur,,en,élèves,,en,en trois sections de trois heures de cours par semaine chacun,,en

I am attending a research retreat on mindfulness and contemplative practices at the beautiful Garrison Institute. I am learning a lot of interesting things, and meeting a lot of like-minded and excellent people – the kind of people with whom I could have deep conversation about the unreal nature of reality, unlike most people from other walks of life would politely and tactfully excuse themselves when I get a bit unreal.

Twilight Years

At some point in our life, we come to accept the fact we are closer to death than life. What lies ahead is definitely less significant than what is left behind. These are the twilight years, and I have come to accept them. With darkness descending over the horizons, and the long shadows of misspent years and evaded human conditions slithering all around me, I peer into the void, into an eternity of silence and dreamlessness. Il est almost time.

Recap of Modern Physics

Depuis la série de post sur des particules et des interactions est devenu un peu plus longtemps que je voulais, Je pensais le briser. Commençons par un résumé de la physique moderne que vous aurez besoin de comprendre la structure de la matière.

Interpretation of Special Relativity

When we looked at Quantum Mechanics, we talked about its various interpretations. The reason we have such interpretations, Je l'ai dit, is that QM deals with a reality that we have no access to, through our sensory and perceptual apparatuses. D'autre part, Special Relativity is about macro objects in motion, and we have no problem imagining such things. So why would we need to have an interpretation? The answer is a subtle one.
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Speed of Light

The speed of light being a constant sounds like a simple statement. But there is more to it, quite a bit more. Let’s look at what this constancy really means. À première vue, it says that if you are standing somewhere, and there is a ray of light going from your right to left, it has a speed c. And another ray of light going from left to right also has a speed c. So far, so good. Now let’s say you are in a rocket ship, comme représenté sur la figure ci-dessous, moving from right to left.

Théorie de la relativité restreinte

Quand nous entendons parler d'Einstein et de la relativité restreinte (ou la théorie de la relativité, d'utiliser le nom réel), nous pensons à la célèbre $E = mc^2$ équation, et des choses bizarres comme le paradoxe des jumeaux. Bien que ces choses sont vraies et importantes, le problème SR tente de résoudre est un complètement différent. Il est une tentative de défendre un principe de base en physique.
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Quantum Mechanics – Interpretations

Whenever we talk about Quantum Mechanics, one of the first questions would be, “What about the cat?” This question, vraiment, is about the interpretations of Quantum Mechanics. The standard interpretation, the so-called Copenhagen interpretation, leads to the famous Schrodinger’s cat.
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Quantum Field Theory

In this post on Quantum Mechanics (QM), we will go a bit beyond it and touch upon Quantum Field Theory – the way it is used in particle physics. In the last couple of posts, I outlined a philosophical introduction to QM, as well as its historical origin – how it came about as an ad-hoc explanation of the blackbody radiation, and a brilliant description of the photoelectric effect.
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