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  1. Time's Arrow and Entropy | Nature
  2. Nancy Pelosi: An Extremely Stable Genius
  3. Time's Arrow

Here, quantum physics has brought us antiparticles, and previous laboratory experiments have taught us that particles and antiparticles do not always behave in the same way. This led physicists to think that the equations of the subatomic world would not look the same if time were reversed.

Time's Arrow and Entropy | Nature

As they travel, antikaons can transform into kaons and vice versa. The charge of the electron revealed which type of kaon had decayed. In a paper published on October 7, , which will appear in an upcoming issue of Physics Letters B, the CPLEAR team shows that the rate for antikaons transforming into kaons is higher than that for kaons becoming antikaons, the time-reversed process. This experiment has observed a microscopic arrow of time, for the first time in the history of physics.

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This experiment casts a new and sharper light on the fundamental symmetries of physics, and how they are broken. Physicists know that time symmetry T has to be part of a larger, more powerful package known as CPT symmetry for charge, parity, and time reversal , which sits at the heart of modern physics. Swap antimatter for matter, view the universe in a mirror, and reverse the direction of time, and all experiments should come out the same way they do in the real world. However, back in , physicists found that the charge-parity CP symmetry combination was not respected.

According to the CPT symmetry package, this means that time symmetry T should also be violated, in a way that compensates for the CP asymmetry.


CPLEAR's achievement is to measure a small time asymmetry at just the level that compensates for the CP asymmetry observed over three decades ago. The violation of the T and CP symmetries may be responsible for the dominance of matter over antimatter in the universe today. This physics is the subject of ongoing experiments at various laboratories around the world, and it will the principal objective of one of the experiments at CERN's future Large Hadron Collider. At CERN. A different sound in the LHC tunnel.

Open Days: Congratulations and Thanks. He is always fearful of something and does not want to be too conspicuous. Later he changes his identity and moves to New York. Considering the story forward, he escaped Europe after the war and succeeded in settling in America, with the assistance of a Reverend Nicholas Kreditor who apparently assists war criminals in hiding. In he travels in reverse to Portugal, from where he makes his way to Auschwitz.

While at Auschwitz, the reverse chronology means that he creates life and heals the sick, rather than the opposite. What tells me that this is right? What tells me that all the rest was wrong? Certainly not my aesthetic sense. I would never claim that Auschwitz-Birkenau-Monowitz was good to look at. Or to listen to, or to smell, or to taste, or to touch. There was, among my colleagues there, a general though desultory quest for greater elegance.

I can understand that word, and all its yearning: elegant. Not for its elegance did I come to love the evening sky above the Vistula , hellish red with the gathering souls. Creation is easy. Also ugly. Hier ist kein warum. Here there is no why.

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Here there is no when, no how, no where. Our preternatural purpose? To dream a race.

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To make a people from the weather. From thunder and from lightning. With gas, with electricity, with shit, with fire. In the reversed version of reality, not only is simple chronology reversed people become younger, and eventually become children, then babies, and then re-enter their mothers' wombs, where they finally cease to exist but so is morality. Blows heal injuries, doctors cause them.

Nancy Pelosi: An Extremely Stable Genius

Theft becomes donation, and vice versa. In a passage about prostitutes, doctors harm them while pimps give them money and heal them. When the protagonist reaches Auschwitz, however, the world starts to make sense. A whole new race is created. Amis first thought up the idea of telling a man's life backwards in time two years before the novel was published.

The alternative title for the novel is taken from Primo Levi 's The Truce :.

Time's Arrow

So for us even the hour of liberty rang out grave and muffled, and filled our souls with joy and yet with a painful sense of pudency, so that we would have liked to wash our consciences and our memories clean from the foulness that lay upon them; and also with anguish, because we felt that this should never happen, that now nothing could ever happen good and pure enough to rub out our past, and that the scars of the outrage would remain within us forever Because, and this is the awful privilege of our generation and of my people, no one better than us has ever been able to grasp the incurable nature of the offense, that spreads like a contagion.

It is foolish to think that human justice can eradicate it. The sense of inevitability and predestination the narrator often mentions the fact that Odilo can't commit suicide and has no choice but to follow through further strengthens the significance of the alternative title. Time's arrow is often associated with the broad definition of entropy. According to the second law of thermodynamics , entropy in a closed system increases with time, therefore establishing the irreversible direction of the latter.

Entropy can be viewed, in general terms, as an expression of disorder or randomness in a system. The narrator often repeats his observation that creation is easy, whereas destruction is hard: that is probably the best definition of the reversal of time.