In special and general relativity, a light cone (or "null cone") is the path that a flash of light, emanating from a single event (localized to a single...

In physics, particularly special relativity, light-cone coordinates, introduced by Paul Dirac and also known as Dirac coordinates, are a special coordinate...

more specifically Minkowski space, physicists often refer to a "light cone". A light cone represents any possible future evolution of an object given its...

The cone of light, or light reflex, is a visible phenomenon which occurs upon examination of the tympanic membrane with an otoscope. Shining light on the...

past light cone. So in timelike intervals Δct is greater than Δx, making timelike intervals positive.: 220  The region exterior to the light cone consists...

the future light cone of p {\displaystyle p} , whilst those events that can send a light pulse to p {\displaystyle p} form the past light cone of p {\displaystyle...

large quantum systems, including nuclei. For example, in the discretized light-cone quantization method (DLCQ), periodic conditions are introduced such that...

resulting string field theories can be very different. Using light cone gauge, yields light-cone string field theories whereas using BRST quantization, one...

which are active in dim light and enable scotopic vision. Most vertebrates (including humans) have several classes of cones, each sensitive to a different...

light cone of x {\displaystyle x} as the future and past null cones of x {\displaystyle x} together. elsewhere as points not in the light cone, causal...

dimension. The units of measurement in these diagrams are taken such that the light cone at an event consists of the lines of slope plus or minus one through that...

of the light cones changes as we travel out from the axis of symmetry r = 0 {\displaystyle r=0} : When we get to the critical radius, the cones become...

another type): light-like curves, having at each point the speed of light. They form a cone in spacetime, dividing it into two parts. The cone is three-dimensional...

special relativity, the future is considered absolute future, or the future light cone. In the philosophy of time, presentism is the belief that only the present...

light cones from these events intersect the particle's world line. On the other hand, if the particle is accelerating, in some situations light cones...

spacetime. In this space, there is a defined light-cone associated with each point, and events not on the light cone are classified by their relation to the...

420 nm than at any other wavelength. Light of a longer wavelength can also produce the same response from an S-cone, but it would have to be brighter to...

light cone of an event at the center of the diagram (at T=X=0), while the two white hole horizons coincide with the boundaries of the past light cone...

In theoretical physics, light cone gauge is an approach to remove the ambiguities arising from a gauge symmetry. While the term refers to several situations...

light cone of the event and ultimately reducible to fundamental interactions. Similarly, a cause cannot have an effect outside its future light cone....

we live within their past light cone. But we cannot receive signals from those parties and places outside our past light cone. Along with the formulation...

upper branch of the light cone, the future light cone. Q(x) = 0, x0 < 0 is the lower branch of the light cone, the past light cone. Q(x) < 0 is a hyperboloid...

The speed of light in vacuum, commonly denoted c, is a universal physical constant exactly equal to 299,792,458 metres per second (approximately 300,000...

time, manifested in waves (e.g., light and sound) travelling only expanding (rather than focusing) in time (see light cone); Entropic arrow of time: according...

a given observer "now" takes the form of the observer's past light cone. The light cone of a given event is objectively defined as the collection of events...

field theory. An explicit description of the second-quantization of the light-cone string was given by Kaku and Keiji Kikkawa. Kaku is most widely known...

lighting, the light cone emitted by a light source is modeled as a transparent object and considered as a container of a "volume". As a result, light has the...

equip a weapon known as a Light Cone, that has various effects that activate if the Paths of both the character and Light Cone match. Characters can also...

radiator, the emerging photons occupy a light-cone in space. In a RICH detector the photons within this light-cone pass through an optical system and impinge...

emits only light that arrives nearly perpendicular to the semiconductor's surface, in a cone shape referred to as the light cone, cone of light, or the escape...