Quotes About Gravity

The quanta of gravity, that is, are not in space; they are themselves space. The spin networks that describe the quantum structure of the gravitational field are not immersed in space, they do not inhabit a space. The location of single quanta of space is not defined with regard to something else, but only by the links, and the relation these express.

Einstein'?n denklemi uzay?n dura?an olamayaca??n?, geni?lemek zorunda oldu?unu gösterir. (...) Ayn? denklem geni?lemenin minicik ve çok s?cak genç bir evrenin patlamas?yla tetiklendi?ini de öngörür: Bu da Büyük Patlama'd?r.

This is a tremendous result: on the one hand, taking quantum mechanics into account resolves the problems generated by the infinities of Einstein's theory of gravity, that is to say, the singularities. On the other, taking gravity i to account solves the problems generated by quantum field theory, that is to say, the divergences. Far from being contradictory, as they at first seemed, the two theories each offer the solution to the problems posed by the other!

Without this attraction, every celestial body would move in a straight line. So the universe, then, is a large space where bodies attract one another by means of forces; and there is a universal force, gravity: every body attracts every other body.

Black hole heat is directly connected to loop quantum gravity's fluctuations of the atoms of space.

This is how time is depicted in Einstein's general theory of relativity. His equations do not have a single "time"; they have innumerable times.

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.

the world is made entirely from quantum fields. These fields do not live *in* spacetime; they live, so to speak, one on top of the other: fields on fields. The space and time that we perceiv in large scale are our blurred and approximage image of one of these quantum fields: the gravitational field (193).

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

And it's here that Einstein's extraordinary stroke of genius occurs, one of the greatest flights in the history of human thinking: what if the gravitational field turned out actually to be Newton's mysterious space? What if Newton's space was nothing more than the gravitational field? This extremely simple, beautiful, brilliant idea is the theory of general relativity.

Planets circle around the sun, and things fall, because space around them is curved.

When we say that the volume of a room is, for example, one hundred cubic meters, we are in effect counting the grains of space-the "quanta of the gravitational field"-that it contains. In a room, this number has more than one hundred digits. When we say that the area of this page is forty-five square inches, we are actually counting the number of links in the web, or loops, that traverse the page. Across the page of this book, there is a number of quanta with more or less seventy digits.

the gravitational field is not diffused through space; the gravitational field is that space itself.

Where time passes uniformly, in interplanetary space, things do not fall.

Quantum gravity is the discovery that no infinitely small point exists. There is a lower limit to the divisibility of space.

Solen böjer rummet runt omkring sig och jorden kretsar inte kring den för att den vore dragen av en gåtfull kraft, utan för att den rör sig rakt fram i ett rum som böjs.

The physical substratum that determines duration and physical intervals—the gravitational field—does not only have a dynamic influenced by masses; it is also a quantum entity that does not have determined values until it interacts with something else. When it does, the durations are granular and determinate only for that something with which it interacts; they remain indeterminate for the rest of the universe.

Einstein predicted that time passes more quickly high up than below, nearer to Earth. This was measured and turned out to be the case. If a person who has lived at sea level meets up with his twin who has lived in the mountains, he will find that his sibling is slightly older than he. And this is just the beginning.

the "singularity" that classic general relativity anticipated disappears as soon as we take quantum gravity into account.

All of this is the result of an elementary intuition: that space and gravitational field are the same thing.

My bottom is so big it's got its own gravitational field.

I had occasion to test the law of gravity. I am happy to report it is intact.

Tip the world over on its side and everything loose will land in Los Angeles." "Frank Lloyd Wright said that.

Mister, that boy couldn't hit the ground if he fell out of an airplane.