Quotes About Physics

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

The field equations and the whole history of general relativity have been complicated.

If you're in a helicopter, and you hover, why does the Earth not come to you if it's round?

Key amongst these is the Newton's Cradle, which we

Baryons don't expand when the universe expands.

bosons—photons, and so on— are in some respects strongly tied to spacetime. Their wavelengths expand as the universe expands.

If physicists want to develop a time machine, they should explore fear. Fear dilates and compresses time without limit. For desperate people awaiting rescue, every instant stretches into unendurable agony; for those awaiting death by cancer, the earth spins relentlessly, shortening the days until they pass like fanned pages in a book. Trapped in our bodies, perception is all, and the engine of perception is hunger for life.

Gravity crosses the dimensions, including time," he said.

Doppler effect.

love's from chemistry but sex is a matter of physics.

On Friday there was a department Colloquium on plasma physics, given by Norman Rostoker. Gordon went and sat well in the back. Rostoker's first slide was: Seven Phases of the Thermonuclear Fusion Program I Exultation II Confusion III Disenchantment IV Search for the Guilty V Punishment of the Innocent VI Distinction for the Uninvolved VII Burying the Bodies/Scattering the Ashes

Fermi started to calculate on his own, saying nothing, and in a direct, simple way found the essential point. The ability of a centrifuge to separate U-235 from U-238 was proportional to its length and to the fourth power of the peripheral speed of its rotor. Karl

pass, shaking his head slightly as if to clear it. "This guy Professor Peierls, he told me that he was convinced the Krauts didn't have a big, coherent program. See, he got hold of catalogs of courses in German universities. He compared them with those from past years, hunting them up in the Cambridge University library. He saw that the usual people were teaching the usual physics courses.

When a particle's wavelength became smaller than the Schwarzschild radius, the disciplines of gravitation and particle physics merged. The minimum mass where this occurred was scarcely a thousandth of a grain of sand. Still, for fundamental particle physics this was incredibly huge, a million million million times the weight of a uranium nucleus.

The qubit acts as a bridge between the microscopic and the macroscopic worlds.

I think about things like the fact that nobody knows what time is. Time is what? Nobody can describe it, even physics or math or anything else. But it is what we continuously experience. It's the state of our unfolding, in a way, and in that sense that the continuous reopening of reality is what I think of as, perhaps, a worldview.

I'm doing physics because I'm curious about how it works - full speed ahead, damn the torpedoes, don't worry about whether somebody is going to be able to do an experiment next week, just figure it out.

Meteorologists don't use a script, and most create their own graphics and certainly put together their own forecasts. Most of us went to school to become scientists - at least I did - and studied thermodynamics, physics, and tons of calculus to take this young science to the next level. Our accuracy is amazing and will only continue to improve.

Becoming a scientist is a long journey, and at every step, I found projects that were exciting, motivating me to continue. My path was not straightforward - when I began studying physics in college, I had no idea I would end up studying asteroids; in fact, I never took an astronomy class.

The essential point is that, although coordinates are a powerful, and sometimes essential, tool in many calculations, the fundamental laws of physics can be expressed without the aid of coordinates; and, indeed, their coordinate-free expressions are generally elegant and exceedingly powerful.

Many applications of the coincidence method will therefore be found in the large field of nuclear physics, and we can say without exaggeration that the method is one of the essential tools of the modern nuclear physicist.

Think of color, pitch, loudness, heaviness, and hotness. Each is the topic of a branch of physics.

Following Rice, I went to Caltech for a Ph.D in physics, without any strong idea of what I wanted to do for a thesis topic.

But even physics cannot be defined from an atomic topography.