Quotes About Physics

But since the velocity is equal to the height of the thin rectangle, and the time interval to its base, this product is equal to the area of the rectangle.

George Gamow

Se supone que el Demonio de Maxwell era un personaje muy hábil, capaz de observar cada molécula y cambiar a su antojo la dirección del movimiento de la misma.

Does ice float?

People say that physics has laws, I told him, walking to the bedroom door. I prefer to view them as a set of flexible guidelines.

P]hysics... [is] the philosophy of nature, so far as it is based on empirical laws.

The laws of history are as absolute as the laws of physics, and if the probabilities of error are greater, it is only because history does not deal with as many humans as physics does atoms, so that individual variations count for more.

superluminal velocities

The laws of history are as absolute as the laws of physics, and if the probabilities of error are greater, it is only because history does not deal with as many humans as physics does atoms, so that individual variations count for more. Seldon predicted a series of crises through the thousand years of growth, each of which would force a new turning of our history into a pre-calculated path. It is those crises which direct us – and therefore a crisis must come now.

All sources of energy in our Universe run down. We can't help that. Everything is downhill in just one direction, and we can force a temporary uphill, backward, only by taking advantage of some greater downhill in the vicinity. If we want useful energy forever, we need a road that is downhill both ways. That is a paradox in our Universe; it stands to reason that whatever is downhill one way is uphill going back.

Hackett's Equation.

Stored energy had a way of leaking, no matter what was done to stop it. That was another aspect of the all-embracing, irresistible second law of thermodynamics.

Clara lived in a universe of her own invention, protected from life's inclement weather, where the prosaic truth of material objects mingled with the tumultuous reality of dreams and the laws of physics and logic did not always apply.

Black holes are very exotic objects. Technically, a black hole puts a huge amount of mass inside of zero volume. So our understanding of the center of black holes doesn't make sense, which is a big clue to physicists that we don't have our physics quite right.

Zero kelvin is the lowest possible temperature. At absolute zero, all motion comes to a standstill. It is obvious that a lower temperature is not feasible because there is no velocity smaller than zero and no energy content less than nothing.

We have this interesting problem with black holes. What is a black hole? It is a region of space where you have mass that's confined to zero volume, which means that the density is infinitely large, which means we have no way of describing, really, what a black hole is!

We get the exciting result that the total energy of the universe is zero. Why this should be so is one of the great mysteries - and therefore one of the important questions of physics. After all, what would be the use of studying physics if the mysteries were not the most important things to investigate?

The dark energy is not exactly zero, but the first 122 decimal points are zero. That's crazy. That is really one of the craziest things we've ever discovered.

The grounding in natural sciences which I obtained in the course of my medical studies, including preliminary examinations in botany, zoology, physics, and chemistry, was to become decisive in determining the trend of my literary work.

Everything in space obeys the laws of physics. If you know these laws, and obey them, space will treat you kindly. And don't tell me man doesn't belong out there. Man belongs wherever he wants to go - and he'll do plenty well when he gets there.

No matter how hard you try to teach your cat general relativity, you're going to fail.

I knew I can teach physics well, so earning money from tuition was no struggle. The struggle was to earn money through acting.

According to String Theory, what appears to be empty space is actually a tumultuous ocean of strings vibrating at the precise frequencies that create the 4 dimensions you and I call height, width, depth and time.

And that because the moving parts are a million times smaller than the ones we're familiar with, they move a million times faster, just as a smaller tuning fork produces a higher pitch than a large one.