Quotes About Gravity

La pesanteur, la nécessité et la valeur sont trois notions intrinsèquement liées : n'est grave que ce qui est nécessaire, n'a de valeur que ce qui pèse.

Das schwerste Gewicht beugt uns nieder, erdrückt uns, preßt uns zu Boden. Das schwerste Gewicht ist also gleichzeitig ein Bild intensivster Lebenserfüllung. Je schwerer das Gewicht, desto näher ist unser Leben der Erde, desto wirklicher und wahrer es it.

Love is a metaphysical gravity.

Love is not a magic gravity that keeps everything up.

As subtle and universally pervasive as gravity, love touches everything, and enhances everything it touches.

General relativity then establishes that objects move toward regions where time elapses more slowly; in a sense, all objects "want" to age as slowly as possible. From an Einsteinian perspective, that explains why an object falls when you let go of it.

turn the earth into a black hole you'd need to squeeze it down to about two centimeters across;

If we envision that, somehow, the surface area of a black hole is a measure of the entropy it contains, then the increase in total surface area could be read as an increase in total entropy.

But the gravitational attraction between two smaller things, like two electrons, is a million billion billion billion billion times weaker than their electromagnetic repulsion.

As the amount of matter used to create a black hole increases, the required density to which that matter must be crushed decreases.

Within the modified equations, Kaluza found the ones Einstein had already used successfully to describe gravity in the familiar three dimensions of space and one of time. But because his new formulation included an additional dimension of space, Kaluza found an additional equation. Lo and behold, when Kaluza derived this equation he recognized it as the very one Maxwell had discovered half a century earlier to describe the electromagnetic field.

Since gravity and acceleration are equivalent, if you feel gravity's influence, you must be accelerating. Einstein argued that only those observers who feel no force at all—including the force of gravity—are justified in declaring that they are not accelerating.

The predictions of general relativity have been uniformly confirmed. There is no longer any doubt that Einstein's description of gravity is not only compatible with special relativity, but yields predictions closer to experimental results than those of Newton's theory.

Figure 3.3 Newton's drawing of a cannon on a mountain In Newton's famous cannon-on-a-mountain sketch, the dropped cannonball falls straight downward, while those fired with larger

Black holes collect problems faster than they collect matter.

Things had been falling down since the beginning of time.

Nevertheless his prodigious intellectual powers persisted unabated. In 1696, the Swiss mathematician Johann Bernoulli challenged his colleagues to solve an unresolved issue called the brachistochrone problem, specifying the curve connecting two points displaced from each other laterally, along which a body, acted upon only by gravity, would fall in the shortest time.

Cuando la gravedad es lo bastante elevada no deja escapar nada, ni siquiera la luz. Un lugar así recibe el nombre de agujero negro. Es una especie de gato cósmico de Chesire, enigmáticamente indiferente a lo que le rodea.

He was always running or bounding, never just walking. He seemed always at the point of defeating the law of gravity.

Gravity is a habit that is hard to shake off.

The universe danced towards life. Life was a remarkably common commodity. Anything sufficiently complicated seemed to get cut in for some, in the same way that anything massive enough got a generous helping of gravity. The universe had a definite tendency towards awareness. This suggested a certain subtle cruelty woven into the very fabric of space-time.

Laughter can get through the keyhole while seriousness is still hammering on the door.

Of course, many people in the universe have also had the misplaced belief that they can safely ignore gravity, mostly after taking some local equivalent of dried frog pills, and that has led to much extra work for elementary physics and caused brief traffic jams in the street below.

We're all struggling to stay upright, Maura thought. Resisting the pull of temptation,just as we fight the pull of gravity. And when we finally fall, it's always such a surprise.