Thus the conquest of actual infinity may be considered an expansion of our scientific horizon no less revolutionary than the Copernican system or than the theory of relativity, or even of quantum and nuclear physics.

An object can cross through the event horizon of a black hole from the outside, and then fall rapidly to the central region where our understanding of physics breaks down.

Also, in terms of physics, the term " time horizon " is also synonymous with event horizon, first identified in Steven Hawking's A Brief History of Time.

In black hole physics, the original derivation of Hawking radiation involved field modes that, near the black hole horizon, have arbitrarily high frequencies — in particular, higher than the inverse Planck time, although these do not appear in the final results.

Although the galactic black holes were trillions of times more massive than their ancestral homes, the Xeelee proved to be quite adept at using the complex physics around the event horizon for their own purposes.

Dark-energy stars were first proposed because in quantum physics, absolute time is required ; however, in general relativity, an object falling towards a black hole would to an outside observer seem to have time pass infinitely slowly at the event horizon.

In theory this should not affect the solution to the equations outside of the event horizon because of the principle of causality and properties of the event horizon ( i. e. nothing physical inside the black hole can influence any of the physics outside the horizon ).

: – indirect radiation effects in the physics of acoustic horizon explored as a case of Hawking radiation

Due to their processing capabilities and flexibility, CNN processors have been used or has been prototyped for novel field applications such as flame analysis for monitoring combustion at a waste incinerator, mine-detection using infrared imagery, calorimeter cluster peak for high energy physics, anomaly detection in potential field maps for geophysics, laser dot detection, metal inspection for detecting manufacturing defects, and seismic horizon picking.

`` A person with a master's degree in physics, chemistry, math or English, yet who has not taken Education courses, is not permitted to teach in the public schools '', said Grover.

In chemistry and physics, the atomic number ( also known as the proton number ) is the number of protons found in the nucleus of an atom and therefore identical to the charge number of the nucleus.

Another possibility, raised in an essay by the Swedish fantasy writer and editor Rickard Berghorn, is that the name Alhazred was influenced by references to two historical authors whose names were Latinized as Alhazen: Alhazen ben Josef, who translated Ptolemy into Arabic ; and Abu ' Ali al-Hasan ibn al-Haytham, who wrote about optics, mathematics and physics.

Atomic physics is the field of physics that studies atoms as an isolated system of electrons and an atomic nucleus.

The term atomic physics is often associated with nuclear power and nuclear bombs, due to the synonymous use of atomic and nuclear in standard English.

As with many scientific fields, strict delineation can be highly contrived and atomic physics is often considered in the wider context of atomic, molecular, and optical physics.

It is not concerned with the formation of molecules ( although much of the physics is identical ), nor does it examine atoms in a solid state as condensed matter.

and atomic physics is no exception.

The true beginning of atomic physics is marked by the discovery of spectral lines and attempts to describe the phenomenon, most notably by Joseph von Fraunhofer.

In our current understanding of physics, the Bohr model is called a semi-classical model because of its quantization of angular momentum, not primarily because of its relationship with electron wavelength, which appeared in hindsight a dozen years after the Bohr model was proposed.

The barn is commonly used in describing the cross sectional area of interaction in nuclear physics.

In particle physics, antimatter is material composed of antiparticles, which have the same mass as particles of ordinary matter but have opposite charge and quantum spin.

At this time, the apparent asymmetry of matter and antimatter in the visible universe is one of the greatest unsolved problems in physics.

RWTH Aachen University, established as Polytechnicum in 1870, is one of the Germany's Universities of Excellence with strong emphasis on technological research, especially for electrical and mechanical engineering, computer sciences, physics, and chemistry.

It is both an extended discussion ( and polemic ) on Stoic physics, and an exposition of Aristotelian thought on this theme.

A Fire Upon the Deep is a science fiction novel by American writer Vernor Vinge, a space opera involving superhuman intelligences, aliens, variable physics, space battles, love, betrayal, genocide, and a conversation medium resembling Usenet.

Furthermore, there is no proposed mechanism of action by which the positions and motions of stars and planets could affect people and events on Earth that does not contradict well understood, basic aspects of biology and physics.

Analytic geometry is widely used in physics and engineering, and is the foundation of most modern fields of geometry, including algebraic, differential, discrete, and computational geometry.

In physics and optics, the Abbe number, also known as the V-number or constringence of a transparent material, is a measure of the material's dispersion ( variation of refractive index with wavelength ) in relation to the refractive index, with high values of V indicating low dispersion ( low chromatic aberration ).

In physics, angular momentum, moment of momentum, or rotational momentum is a vector quantity that represents the product of a body's rotational inertia and rotational velocity about a particular axis.

In modern ( late 20th century ) theoretical physics, angular momentum is described using a different formalism.

This and related predictions follow from the fact that light follows what is called a light-like or null geodesic — a generalization of the straight lines along which light travels in classical physics.

Nucleons sit at the boundary where particle physics and nuclear physics overlap.

:: this is employed in calculating the critical temperature for a Bose – Einstein condensate in a box with periodic boundary conditions, and for spin wave physics in magnetic systems.

In physics and electrical engineering, a cutoff frequency, corner frequency, or break frequency is a boundary in a system's frequency response at which energy flowing through the system begins to be reduced ( attenuated or reflected ) rather than passing through.

This quantity is common in physics and engineering ; for example, in the equations of bending in beams, the 1D vibration of a tense string, approximations to the fluid flow around surfaces ( in aeronautics ), and the free surface boundary conditions in ocean waves.

His work in the field of mathematical physics regarded the boundary value problem of the equation of Laplace.

However, for many properties within the scope of physical chemistry, and other disciplines at the boundary between chemistry and physics, the distinction may be a matter of researcher's perspective.

Heat is defined in physics as the transfer of thermal energy across a well-defined boundary around a thermodynamic system.

Quantum decoherence gives the appearance of wave function collapse ( the reduction of the physical possibilities into a single possibility as seen by an observer ) and justifies the framework and intuition of classical physics as an acceptable approximation: decoherence is the mechanism by which the classical limit emerges out of a quantum starting point and it determines the location of the quantum-classical boundary.

In physics and fluid mechanics, a boundary layer is the layer of fluid in the immediate vicinity of a bounding surface where the effects of viscosity are significant.

James Hardy Wilkinson FRS ( 27 September 1919 – 5 October 1986 ) was a prominent figure in the field of numerical analysis, a field at the boundary of applied mathematics and computer science particularly useful to physics and engineering.

In mathematics and physics, a topological soliton or a topological defect is a solution of a system of partial differential equations or of a quantum field theory homotopically distinct from the vacuum solution ; it can be proven to exist because the boundary conditions entail the existence of homotopically distinct solutions.

In physics, the AdS / CFT correspondence ( anti de Sitter / conformal field theory correspondence ), sometimes called the Maldacena duality, is the conjectured equivalence between a string theory and gravity defined on one space, and a quantum field theory without gravity defined on the conformal boundary of this space, whose dimension is lower by one or more.

In condensed matter physics, the Fermi surface is an abstract boundary useful for predicting the thermal, electrical, magnetic, and optical properties of metals, semimetals, and doped semiconductors.

SPL focuses on research activities in disciplines such as surface boundary level physics, atmospheric aerosols, chemistry of radiation, atmospheric dynamics, etc.

In theoretical physics, a Hořava – Witten domain wall is a type of domain wall that behaves as a boundary of the eleven-dimensional spacetime in M-theory.

* The differential equation with boundary conditions is important in math and physics, for example describing a particle in a box in quantum mechanics, or standing waves on a string.

" Schrödinger's lecture focused on one important question: " how can the events in space and time which take place within the spatial boundary of a living organism be accounted for by physics and chemistry?