Richard P. Feynman Quotes

Every particle of matter is attracted by or gravitates to every other particle of matter with a force inversely proportional to the squares of their distances.

The first amazing fact about gravitation is that the ratio of inertial mass to gravitational mass is constant wherever we have checked it. The second amazing thing about gravitation is how weak it is.

We have to have a combination of general relativity that describes the warping of space and time, and quantum physics, which describes the uncertainties in that warping and how they change.

So what I'm saying is why don't we think about changing Schrodinger's equation at some level when masses become too big at the level that you might have to worry about Einstein's general relativity.

Among the questions we have in mind: dark matter, antimatter, and matter symmetry.

I always found it satisfying that gravity was described by Einstein's geometric theory of general relativity.

You can be only a modest distance away from the gravity brane, and gravity will be incredibly weak.

I became interested in this question of whether you can build wormholes for interstellar travel. I realized that if you had a wormhole, the theory of general relativity by itself would permit you to go backward in time.

My work indicated that if we consider smaller and smaller black holes, at some stage, the properties of black holes become indistinguishable from those of elementary particles.

E=mc2. Energy equals mass times the speed of light squared. The original statement is: If a body gives off the energy L in the form of radiation, its mass diminishes by L/c2. Ist die Tragheit eines Korpers von Seinem Energieghalt Abhangig? 1905

I suppose I'll have to add the force of gravity to my list of enemies.

The jury is not in, so we just don't know. But there are very strong indications that wormholes that a human could travel through are forbidden by the laws of physics. That's sad, that's unfortunate, but that's the direction in which things are pointing.

Wormholes - if you don't have something threading through them to hold them open, the walls will basically collapse so fast that nothing can go through them.

A static universe isn't physically self-consistent.

The students on my course were fascinated by the idea that gravitational waves might exist. I didn't know much about them at all, and for the life of me, I could not understand how a bar interacts with a gravitational wave.

Momentum is an amazing thing when it is working in your favour.

I am deeply impressed with the way dark matter has explained cosmological observations.

We cannot explain the phenomenon of gravitational lensing without general relativity, and this is where MOND spectacularly fails.

Positive energy and attitude is sexy to me.

I thought that there must be an easier way to explain how a gravitational wave interacts with matter: If one just looked at the most primitive thing of all, 3D floating masses out in space, and look at how the space between them changed because of the gravitational wave coming between them.

Einstein had two new predictions from general relativity. One was that light would bend. That was tested in 1919, and basically, he was proven right. The second prediction was gravitational waves, which took us 100 years to prove. The theory itself, which is thought by most to be rather obscure, you use every day, probably.

Experimentally, we now have demonstrated that Einstein's theory is right in strong gravitational fields. That's important to a lot of people.

I was sitting in a chair in the patent office at Bern when all of a sudden a thought occurred to me: "If a person falls freely he will not feel his own weight." I was startled. This simple thought made a deep impression on me. It impelled me toward a theory of gravitation.

Energy is liberated matter, matter is energy waiting to happen.

Energy is a very subtle concept. It is very, very difficult to get right.