Quotes About Physics

I may not know something with certainty, but I can still assign a lesser or greater degree of probability to something.

Albert Einstein, yak?n dostu ?talyan Michele Besso öldü?ünde onun k?z karde?ine dokunakl? bir mektu yazm??t?: "Michele bu garip dünyadan benden biraz önce ayr?ld?. Bunun hiçbir anlam? yok. Bizim gibi fizi?e inanan insanlar, geçmi?, ?imdi ve gelecek aras?ndaki ayr?m?n sürüp giden inatç? bir yan?lsamadan ba?ka bir ?ey olmad???n? bilir.

The crucial point here is the difference from what happens with falling bodies: a ball may fall, but it can also come back up, by rebounding, for instance. Heat cannot. This is the only basic law of physics that distinguishes the past from the future.

Where are these quanta of space? Nowhere. They are not in space because they are themselves the space. Space is created by the linking of these individual quanta of gravity. Once again, the world seems to be less about objects than about interactive relationships.

This is Dirac's quantum mechanics: a recipe for calculating the spectra of the variables, and a recipe for calculating the probability that one or another value in the spectrum appears during an interaction.

What happens between one interaction and the next is not mentioned in the theory. It does not exist.

Our entire current technology is founded on the use of a physical thing-electromagnetic waves-that was not discovered empirically: it was predicted by Maxwell, simply by searching for the mathematical description accounting for the intuition Faraday got from bobbins and needles. This is the outstanding power of theoretical physics.

Geçmi? ile gelecek aras?ndaki fark yaln?zca ?s? söz konusu oldu?u zaman vard?r. Gelece?i geçmi?ten ay?ran temel olay, ?s?n?n daha s?cak nesnelerden daha so?uk nesnelere geçmesidir.

We often say that causes precede effects and yet, in the elementary grammar of things, there is no distinction between "cause" and "effect."* There

The answer is that each element corresponds to one solution of the main equation of quantum mechanics. The whole of chemistry emerges from a single equation.

I think that quantum mechanics has revealed three aspects of the nature of things: granularity, indeterminacy, and the relational structure of the world.

Dolay?s?yla olas?l?k, cisimlerin de?i?imiyle ilgili de?ildir. Ba?ka cisimlerle etkile?tiklerinde, cisimlerin özellik alt s?n?flar?n?n de?erlerinin de?i?imiyle ilgilidir.

Time sits at the center of the tangle of problems raised by the intersection of gravity, quantum mechanics, and thermodynamics.

La fisica del XIX e XX secolo si è scontrata con queste domande ed è incappata in qualcosa di inaspettato e sconcertante, assai più del fatto, in fondo marginale, che il tempo passi a velocità diverse in luoghi diversi. La differenza fra passato e futuro - fra causa e effetto, fra memoria e speranza, fra rimorso e intenzione - nelle leggi elementari che descrivono i meccanismi del mondo non c'è.

The story goes that in the dimly lit old halls of Kracow University, an austere professor of physics came out of his study waving around Einstein's article, screaming, "The new Archimedes is born!

This clarified, here is the point: it is possible to think of quantum physics as a theory of information (in the sense outlined) that systems have about one another.

The present is like the flatness of Earth: an illusion. We

Physics opens windows through which we see far into the distance. What we see does not cease to astound us. We realize that we are full of prejudices and that our intuitive image of the world is partial, parochial, inadequate

The difference between past and future, between cause and effect, between memory and hope, between regret and intention . . . in the elementary laws that describe the mechanisms of the world, there is no such difference.

Boltzmann was not taken seriously. At the age of fifty-six, in Duino, near Trieste, he committed suicide. Today he is considered one of the geniuses of physics.

The solidity of the classical vision of the world is nothing other than our own myopia. The certainties of classical physics are just probabilities. The well-defined and solid picture of the world given by the old physics is an illusion.

What role do we have as human beings who perceive, make decisions, laugh, and cry, in this great fresco of the world as depicted by contemporary physics?

Only where there is heat is there a distinction between past and future.

This reads: "Delta S is always greater than or equal to zero," and we call this "the second principle of thermodynamics