“The space that is added as the universe expands has the same properties-curvature, energy density-as the parent space.” — Henning Genz Copy Share Image
“Light is an excitation of empty space proper, of the vacuum. It is no more and no less.” — Henning Genz Copy Share Image
“As long as two fields that describe one and the same space are identified, the field and the space can be used… — Henning Genz Copy Share Image
“By reversing the steps that we took to advance from the concept of substance to that of Materia Prima, we can imagine… — Henning Genz Copy Share Image
“What is important here is that for every given curvature there are precisely fixed masses. And since we recall that the virtual… — Henning Genz Copy Share Image
“Any space that distinguishes directions and accelerations cannot be "empty", in Aristotle's meaning.” — Henning Genz Copy Share Image
“Second, what properties distinguish an otherwise empty volume that retains only some black-body radiation at zero temperature-dubbed zero-degree radiation-from truly empty space?… — Henning Genz Copy Share Image
“The universe is but one immense unit; it cannot be separated into spatial domains that are totally empty and others that are… — Henning Genz Copy Share Image
“There is no suchthing as absolutely empty space. All space contains fluctuating fields and particles. Even in the emptiest space that the… — Henning Genz Copy Share Image
“Of all conceivable reasons for some sequence of physical events Plato recognizes only its ultimate aim as worthy of attention. The world… — Henning Genz Copy Share Image
“A space that is empty in the sense that it doesn't contain masses is nothing but a special case of the above.… — Henning Genz Copy Share Image
“Galaxies, quasars among them, are interpreted by astrophysicists in terms of probes that are attached to points in space and that move… — Henning Genz Copy Share Image
“Bodies influence the space that surrounds them; they tell us whatever we can learn about that space. Does this mean that, possibly,… — Henning Genz Copy Share Image
“Recall our discussion of the pendulum. Its position at a given instant does not fix its subsequent behavior. Suppose a photograph shows the pendulum… — Henning Genz Copy Share Image
“Just as with sound waves, light waves emitted by a moving source show the Doppler effect. What we observe instead of the sound pitch… — Henning Genz Copy Share Image
“The interpretation of apparent long-distance action by means of continuously propagating effects was vigorously asserted by Isaac Newton. In his wake, the interpretation of… — Henning Genz Copy Share Image
“The quantity that physicists call the specific heat of a substance is defined as the amount of energy needed to raise the temperature of… — Henning Genz Copy Share Image
“To gain any intuitive understanding of the breakdown of this ultimate symmetry through vacuum effects at the critical 10^-44 seconds after the Big Bang,… — Henning Genz Copy Share Image
“To illustrate this relation, think of a game of table tennis. As the ball hits the table, it will bounce up and down. When… — Henning Genz Copy Share Image
“Before the particles that we observe today materialized, all matter in the early universe must have gone through this stage of a quark-gluon soup,… — Henning Genz Copy Share Image
“In physics terms, the reason for symmetry breaking is the instability of the symmetric state.” — Henning Genz Copy Share Image
“What really transcends our understanding is the mechanism that permits these oscillations of abstract field quantities to carry energy. We know this is true;… — Henning Genz Copy Share Image
“Chaotic or disordered distributions are symmetrical on the average. An observer cannot conclude anything about his location from looking around him. An example is… — Henning Genz Copy Share Image
“The hotter a substance, the faster and the less ordered its molecular motion, and the larger the momentum with which molecules collide. Above 0… — Henning Genz Copy Share Image
“This elementary process is symbolically illustrated in figure 59c: A photon becomes an electron-positron pair; inversely, an electron and a positron can combine into… — Henning Genz Copy Share Image
