Archives de la catégorie: Philosophie

La philosophie est jamais trop loin de la physique. Il est dans leur chevauchement que je m'attends à des percées.


Life is full of contradictions.

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 peoplethe 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.

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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.

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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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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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Mécanique quantique

Mécanique quantique (QM) is the physics of small things. How do they behave and how do they interact with each other? Conspicuously absent from this framework of QM is why. Why small things do what they do is a question QM leaves alone. Et, if you are to make any headway into this subject, your best bet is to curb your urge to ask why. Nature is what she is. Our job is to understand the rules by which she plays the game of reality, and do our best to make use of those rules to our advantage in experiments and technologies. Ours is not to reason why. Vraiment.

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Dans tous nos efforts scientifiques, nous utilisons des techniques de haut niveau similaires pour comprendre et étudier les choses. La technique la plus courante est le réductionnisme. Il est basé sur la conviction que le comportement, propriétés et la structure des grandes et complexes objets peuvent être compris en termes de leurs constituants plus simples. En d'autres termes, nous essayons de comprendre l'ensemble (l'univers, par exemple) en termes de plus petite, constituants réduits (telles que des particules).

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Sensory and Physical Worlds

Animals have different sensory capabilities compared to us humans. Cats, par exemple, can hear up to 60kHz, while the highest note we have ever heard was about 20kHz. Apparemment, we could hear that high a note only in our childhood. Si, if we are trying to pull a fast one on a cat with the best hifi multi-channel, Dolby-whatever recording of a mouse, we will fail pathetically. It won’t be fooled because it lives in a different sensory world, while sharing the same physical world as ours. There is a humongous difference between the sensory and physical worlds.

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