Quotes About Relativity

Everything is relative and you have to learn that sometimes you win and other times you lose.

I think doing period piece is easier, because after a certain distance, everybody is equal, I think. The relative contemporary is harder. I think that's the way it is.

Everything is relative except relatives, and they are absolute.

I am not enough of a mathematician to be able to judge either the well-foundedness or the limits of relativity in physics.

The math of quantum mechanics and the math of general relativity, when they confront one another, they are ferocious antagonists and the equations don't work.

By the time 1967 had rolled around, general relativity had been relegated to mathematics departments... in most people's minds, it bore no relation to physics. And that was mostly because experiments to prove it were so hard to do - all these effects that Einstein's theory had predicted were infinitesimally small.

In relativity, movement is continuous, causally determinate and well defined, while in quantum mechanics it is discontinuous, not causally determinate and not well defined.

My sense of religion is Einstein's sense of relativity. I don't believe in God. I believe that energy never dies. So the possibility exists that you might be breathing in some other form of Moses or Buddha or Muhammad or Bobby Kennedy or Roosevelt or Martin Luther King or Jesus.

Given the relativity concept, poverty cannot be eliminated. Indeed, an economic upturn with a broad improvement in household income does not guarantee a decrease in the size of the poor population, especially when the income growth of households below the poverty line is less promising than the overall.

The U.S. is not the holder of truth.

There is no top or bottom, no absolute positioning in space. There are only positions that are relative to the others. There is an incessant change in the relative positions throughout the universe and the observer is always at the centre.

I can't talk you in terms of time --your time and my time are different

In space, distance was time, and time was distance.

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.

If we zipped around at precisely the speed of light, we would never experience any duration at all, no matter how we traveled.

The main trick is to define the four-velocity as a derivative with respect to the proper time Ï" along the trajectory, rather than with respect to the coordinate time t. We write the

Now comes the real magic. In pre-relativistic Newtonian mechanics, momentum is represented by a three-vector given by mass times velocity, . In the world of relativity, we define the four-momentum in an analogous way, as mass times four-velocity:

The minus sign in the proper-time formula (6.2) opens up an interesting possibility. If we consider a straight path that traverses equal amounts of space and time, (?x)2 = (?t)2, we will have ? = 0. So the object moves, but no proper time elapses along its journey.

When you travel more slowly than the speed of light, you are moving mostly through time; if you were to travel faster than light (which you aren't about to do), you would be moving mostly through space.

a straight line through spacetime, if you like—is the path of longest time between two events.

Extraneous motion decreases the time elapsed between two events in spacetime, whereas it increases the distance traveled between two points in space.

Don't worry if you're having a hard time following this oversimplified explanation of physics' most challenging problem. For most of us, understanding special relativity is a little like true love: We should consider ourselves lucky if we can grasp hold of it for even one fleeting moment.

It gets worse when you realize that for YECs, 22 months is only 1.4 million years in evolutionary time.

For us physicists believe the separation between past, present, and future is only an illusion, although a convincing one.