Quotes from Carlo Rovelli

Tanto los protones como los neutrones están hechos de partículas aún más pequeñas, que el físico estadounidense Murray Gell-Mann bautizó con el nombre de «quarks», inspirándose en una palabra sin sentido en una frase sin sentido —«Three quarks for Muster Mark!»— que aparece en el Finnegans Wake de James Joyce. Todas las cosas que tocamos están hechas, pues, de electrones y de estos quarks.

Quantum mechanics and experiments with particles have taught us that the world is a continuous, restless swarming of things; a continuous coming to light and disappearance of ephemeral entities. A set of vibrations, as in the switched-on hippy world of the 1960s. A world of happenings, not of things.

Heat, entropy, and the lower entropy of the past are notions that belong to an approximate, statistical description of nature.

Therefore the scientific quest for knowledge is not nourished by certainty, it is nourished by a radical lack of certainty. Its way is fluid, capable of continuous evolution, has immense strength and a subtle magic. It is able to overthrow the order of things and reconceive the world time and again.

The probability of finding an electron or any other particle at one point or another can be imagined as a diffuse cloud, denser where the probability of seeing the particle is stronger. Sometimes it is useful to visualize this cloud as if it were a real thing. For instance, the cloud that represents an electron around its nucleus indicates where it is more likely that the electron appears if we look at it. If you have encountered them at school, these are the atomic orbitals.

If we think about it carefully, every configuration is particular, every configuration is singular, if we look at all of its details, since every configuration always has something about it that characterizes it in a unique way.

This is the disconcerting conclusion that emerges from Boltzmann's work: the difference between the past and the future refers only to our own blurred vision of the world. It's a conclusion that leaves us flabbergasted: Is it really possible that a perception so vivid, basic, existential—my perception of the passage of time—depends on the fact that I cannot apprehend the world in all of its minute detail?

to inquire about the ultimate foundation of everything is to ask a question that perhaps simply does not make sense.

Kuantum mekani?inde, bir ba?ka cisimle çarp??mad??? sürece hiçbir cismin belirli bir konumu yoktur.

Space is a spin network whose nodes represent its elementary grains, and whose links describe their proximity relations. Spacetime

It isn't true, as is sometimes stated, that life generates structures that are particularly ordered, or that locally diminish entropy: it is simply a process that degrades and consumes the low entropy of food; it is a self-structured disordering, no more and no less than in the rest of the universe.

If we see a child playing on the beach, it is only because between him and ourselves there is this lake of vibrating lines that transport his image to us. Is the world not marvelous?

Later on, I will delve into the mystery of this blurring, to see how it is tied to the strange initial improbability of the universe. For now, I will end with the mind-boggling fact that entropy, as Boltzmann fully understood, is nothing other than the number of microscopic states that our blurred vision of the world fails to distinguish.

Science is a continual exploration of ways of thinking.

Time has lost another of its crucial components: the intrinsic difference between past and future. Boltzmann understood that there is nothing intrinsic about the flowing of time. That it is only the blurred reflection of a mysterious improbability of the universe at a point in the past. The source of Rilke's "eternal current" is nothing other than this.

The passage of time is internal to the world, is born in the world itself in the relationship between quantum events that comprise the world and are themselves the source of time. The

One hundred thousand years ago our species left Africa, compelled perhaps by precisely this curiosity, learning to look ever farther afield. Flying over Africa by night, I wondered if one of these distant ancestors setting out toward the wide-open spaces of the North could have looked up into the sky and imagined a distant descendant flying up there, pondering on the nature of things, and still driven by his very same curiosity.

Copernicus, gezegenlerin dans?n?n merkezinde dünyan?n de?il, güne?in oldu?unu anlad? ve bunu kan?tlad?. Gezegenimiz di?erleri gibi bir gezegen konumuna geldi.

Yukar?da o kadar büyük bir uzay var ki, çok s?radan bir galaksinin bu ücra kö?esinde özel bir ?eyler oldu?unu dü?ünmek çocukça olur.

In the effort to imagine what has not yet been imagined.

Albert Einstein gençli?inde bir y?l?n? aylakl?k ederek geçirdi. Bo?a zaman geçirmeden bir yere var?lmaz ama anne babalar? ne yaz?k ki bunu genellikle unutur. .. Albert, Kant okuyor, bo? zamanlar?nda Pavia Üniversitesi'nde derslere giriyordu; ne kay?t olmu?tu ne de s?navlara giriyordu, bunu zevk için yap?yordu. Gerçek biliminsan? ancak böyle olunur.

In his youth Albert Einstein spent a year loafing aimlessly. You don't get anywhere by not 'wasting' time – something, unfortunately, which the parents of teenagers tend frequently to forget. He

What is the 'present'? We say that only the things of the present exist: the past no longer exists and the future doesn't exist yet. But in physics there is nothing that corresponds to the notion of the 'now'.

the particles are quanta of quantum fields; light is formed by quanta of a field; space is nothing more than a field, which is also made of quanta; and time emerges from the processes of this same field. In other words, the world is made entirely from quantum fields (