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Locus of points at equal phase in a wave
In physics, the wavefront of a time-varying wave field is the set (locus) of all points having the same phase. The term is generally meaningful only for
Wavefront
American computer graphics company
Wavefront Technologies was a computer graphics company that developed and sold animation software used in Hollywood motion pictures and other industries
Wavefront_Technologies
Topics referred to by the same term
Look up wavefront in Wiktionary, the free dictionary. In physics, a wavefront is the locus (a line, or, in a wave propagating in 3 dimensions, a surface)
Wavefront_(disambiguation)
Geometry definition file format
OBJ (or .OBJ) is a geometry definition file format first developed by Wavefront Technologies for The Advanced Visualizer animation package. It is an open
Wavefront_.obj_file
Using wave optics to reproduce a three-dimensional light field
Holography is an imaging technique that allows a wavefront to be recorded and later reconstructed. It is best known as a method of generating three-dimensional
Holography
Canadian software company
Alias Systems Corporation (formerly Alias Research, Alias|Wavefront), headquartered in Toronto, Ontario, Canada, was a software company that produced
Alias_Systems_Corporation
Light rays follow quickest paths
are given, a wavefront expanding from A sweeps all possible ray paths radiating from A, whether they pass through B or not. If the wavefront reaches point
Fermat's_principle
Type of optical instrument
(or Hartmann–Shack) wavefront sensor (SHWFS) is an optical detector used for measuring electromagnetic wavefronts. It is a wavefront sensor commonly used
Shack–Hartmann wavefront sensor
Shack–Hartmann_wavefront_sensor
A wavefront curvature sensor is a device for measuring the aberrations of an optical wavefront. Like a Shack–Hartmann wavefront sensor it uses an array
Wavefront_curvature_sensor
Field of depth extension
In optics and signal processing, wavefront coding refers to the use of a phase modulating element in conjunction with deconvolution to extend the depth
Wavefront_coding
Pattern of movement across water
like a piling in a river. Focus first on a given k, emitting (phase) wavefronts whose stationary position w.r.t. the boat assemble to the standard shock
Kelvin_wake_pattern
Corrective ophthalmological surgery
that outweighs any benefit from wavefront correction. When treating a patient with preexisting astigmatism, most wavefront-guided LASIK lasers are designed
LASIK
Technique used in optical systems
aberrations. Adaptive optics works by measuring the distortions in a wavefront and compensating for them with a device that corrects those errors such
Adaptive_optics
Series of microarchitectures and instruction set architecture by AMD
in groups of 64 called a "wavefront". Wavefronts differ from a classic RISC pipeline in that all threads in the wavefront share a single program counter
Graphics_Core_Next
Method of analysis applied to problems wave propagation
French physicist Augustin-Jean Fresnel) states that every point on a wavefront is itself the source of spherical wavelets and that the secondary wavelets
Huygens–Fresnel_principle
3D computer graphics software
Silicon Graphics Inc. had acquired both Alias and Wavefront Technologies, Inc. in 1995, Wavefront's technology (then under development) was merged into
Autodesk_Maya
Video compression format, succeeds H.264/MPEG-4 AVC
for random access to specific regions of a picture in a video stream. Wavefront parallel processing (WPP) is when a slice is divided into rows of CTUs
High_Efficiency_Video_Coding
Technique for creating virtual acoustic environments
produces artificial wavefronts synthesized by a large number of individually driven loudspeakers from elementary waves. Such wavefronts seem to originate
Wave_field_synthesis
Type of wavefront sensor
A pyramid wavefront sensor is a type of wavefront sensor. It measures the optical aberrations of an optical wavefront. This wavefront sensor uses a pyramidal
Pyramid_wavefront_sensor
Psychoacoustical phenomenon
The precedence effect or law of the first wavefront is a binaural psychoacoustical effect concerning sound reflection and the perception of echoes. When
Precedence_effect
Electromagnetic radiation from a charged particle in a medium
at a speed greater than the phase velocity (speed of propagation of a wavefront in a medium) of light in that medium. A classic example of Cherenkov radiation
Cherenkov_radiation
Overview article
Optical holography is a technique which enables an optical wavefront to be recorded and later re-constructed. Holography is best known as a method of
Physics_of_optical_holography
Wavefront Technology Solutions Inc. is a provider of secondary oil recovery and environmental technologies. The company was founded in 1997 as PE-TECH
Wavefront Technology Solutions
Wavefront_Technology_Solutions
Optical principle
point on the wavefront of birefringent material produces two types of wavefronts or wavelets: spherical wavefronts and ellipsoidal wavefronts. These secondary
Huygens principle of double refraction
Huygens_principle_of_double_refraction
Book by Christiaan Huygens
ether, similar to sound waves. Moreover, he proposed that each point of a wavefront is itself the origin of a secondary spherical wave, a principle known
Treatise_on_Light
Mirror whose surface can be deformed
order to achieve wavefront control and correction of optical aberrations. Deformable mirrors are used in combination with wavefront sensors and real-time
Deformable_mirror
Three-dimensional imaging technique
the whole process chain of synthetically preparing holographic light wavefronts suitable for observation. If holographic data of existing objects is generated
Computer-generated_holography
Measurement method using interference of waves
Sagnac, and the scatterplate interferometer. A wavefront splitting interferometer divides a light wavefront emerging from a point or a narrow slit (i.e.
Interferometry
"Bouncing back" of waves at an interface
Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it
Reflection_(physics)
3D visual effects software
Dynamation was a 3D computer graphics particle generator program sold by Wavefront to run on SGI's IRIX operating system as part of The Advanced Visualizer
Dynamation_(software)
Monochrome light beam whose amplitude envelope is a Gaussian function
{{\text{FWHM}}(z)}{\sqrt {2\ln 2}}}.} The wavefronts have zero curvature (radius of curvature = ∞) at the waist. Wavefront curvature increases in magnitude away
Gaussian_beam
A Wavefront arbiter is a circuit used to make decisions which control the crossbar of a high capacity switch fabric in parallel. It was commercialized
Wavefront_arbiter
The clock and wavefront model is a model used to describe the process of somitogenesis in vertebrates. Somitogenesis is the process by which somites,
Clock_and_wavefront_model
3D graphics software package
Visualizer (TAV), a 3D graphics software package, was the flagship product of Wavefront Technologies from the mid 1980s until the late 1990s. The Advanced Visualizer
The_Advanced_Visualizer
Vector describing a wave; often its propagation direction
proportional to the wavelength), and its direction is perpendicular to the wavefront. In isotropic media, this is also the direction of wave propagation. A
Wave_vector
Type of singularity analysis
we regard ƒ to be smooth in the direction of v. Otherwise, v is in the wavefront set. Formally, in Euclidean space, the wave front set of ƒ is defined
Wave_front_set
Atmospheric distortions of light
the Earth's atmosphere perturbing planar wavefronts before they enter a telescope. The perturbed wavefront ψ p {\displaystyle \psi _{p}} may be related
Astronomical_seeing
American-Latvian physicist and inventor (1936–2026)
Patent number Subject Year granted U.S. patent 3,506,327 Wavefront Reconstruction Using a Coherent Reference Beam 1970 U.S. patent 3,532,407 Spatial Frequency
Juris_Upatnieks
Form of optical aberration
when the pupil is large. A wavefront is a surface over which an optical disturbance has a constant phase. Rays and wavefronts are two mutually complementary
Aberrations_of_the_eye
Shaped charge used in nuclear weapons
different rates of detonation. In order to convert a spherically expanding wavefront into a spherically converging one using only a single boundary between
Explosive_lens
Medical condition
the development of bigeminy. A PVC wavefront often encounters a refractory AV node that does not conduct the wavefront retrograde. Thus the atrium is not
Bigeminy
Interference phenomenon of waves
propagating wavefront as a collection of individual spherical wavelets. The patterns are due to the summation over different points on the wavefront (or, equivalently
Diffraction
Physical phenomenon relating to the direction of waves
to c. When light enters a slower medium at an angle, one side of the wavefront is slowed before the other. This asymmetrical slowing of the light causes
Refraction
Conceptual parallel between optics and classical mechanics
a conceptual parallel between trajectories in classical mechanics and wavefronts in optics, introduced by William Rowan Hamilton around 1831. It may be
Hamilton's optical-mechanical analogy
Hamilton's_optical-mechanical_analogy
Type of angular momentum in light
momentum of a light beam that can be associated with a helical or twisted wavefront. The external OAM is the origin-dependent angular momentum that can be
Orbital angular momentum of light
Orbital_angular_momentum_of_light
Optical property
wavelength. Conceptually, it is the number of half-period zones in the wavefront amplitude, counted from the center to the edge of the aperture, as seen
Fresnel_number
Digital image processing technique
for generating images with increased or flexible depth of field include wavefront coding, light-field cameras and tilt. The starting point for focus stacking
Focus_stacking
Complete reflection of a wave
as air, water or glass, the "rays" are perpendicular to the associated wavefronts. The total internal reflection occurs when the critical angle is exceeded
Total_internal_reflection
Classification of computer architectures
SIMD Systolic array Distributed memory Shared memory MIMD/SIMD hybrid Wavefront array Dataflow machine Reduction machine Processor array Associative memory
Duncan's_taxonomy
Horizontal layer that propagates electromagnetic radiation
acts as an atmospheric dielectric waveguide, limiting the spread of the wavefront to only the horizontal dimension. Atmospheric ducting is a mode of propagation
Atmospheric_duct
Speed that exceeds the speed of sound
faster than the sound waves it creates, it actually leads the advancing wavefront. The sound source will pass by a stationary observer before the observer
Supersonic_speed
3D computer graphics software
X Moray UDO .udo X MotionBuilder .fbx X X NextEngine scan .scn X OBJ (Wavefront) .obj X X Object properties .csv X Parasolid .x_t X PDF .pdf X X PLY
Rhinoceros_3D
English-language animated television series
and aired on Nicktoons until 2003. The series was produced using Alias Wavefront Maya 3D software. The plot of the series begins when the Butt-Ugly Martians
Butt-Ugly_Martians
Frequency change of a wave for observer relative to its source
speed υs = 0.7 c. Since the source is moving, the center of each new wavefront is now slightly displaced to the right. As a result, the wave-fronts begin
Doppler_effect
1998 animated short film by Chris Landreth
time of Bingo's creation, Landreth was employed as an animator at Alias|Wavefront, and the film was used to demonstrate the capabilities of the company's
Bingo_(1998_film)
Aspect of crystal optics
associated polarizations of light, as functions of the orientation of the wavefront, in a doubly-refractive crystal (provided that the crystal does not exhibit
Index_ellipsoid
Artificial star image used by telescopes
phenomenon termed astronomical seeing. Adaptive optics (AO) systems require a wavefront reference source of light called a guide star. While natural stars can
Laser_guide_star
French computer scientist, CGI pioneer, ACM and SIGGRAPH president
Image's acquisition by Wavefront Technologies and later joined their Paris office. After the 1995 merger forming Alias|Wavefront, he became one of the
Alain_Chesnais
American cloud computing and virtualization company
original on June 26, 2020. Retrieved June 23, 2020. "VMware to Acquire Wavefront to Accelerate Delivery of its Cross-Cloud Management Services" (Press
VMware
U.S. directed-energy weapon/telecom research facility
according to the official website, is to "develop and demonstrate optical wavefront control technologies." The range is a secure lab facility and is a division
Starfire_Optical_Range
Algorithm for phase retrieval
phase retrieval algorithm for retrieving the phase of a complex-valued wavefront from two intensity measurements acquired in two different planes. Typically
Gerchberg–Saxton_algorithm
Deviation from perfect paraxial optical behavior
tilt are not true optical aberrations, since when an otherwise perfect wavefront is altered by piston and tilt, it will still form a perfect, aberration-free
Optical_aberration
Algorithm for finding shortest paths
directions are explored uniformly, appearing more-or-less as a circular wavefront as Dijkstra's algorithm uses a heuristic of picking the shortest known
Dijkstra's_algorithm
Fundamental mechanical principles
like this connects particle-like rays of geometrical optics with the wavefronts of Huygens–Fresnel principle. [Maupertuis] … thus pointed to that remarkable
Action_principles
Type of parallel computing architecture of tightly coupled nodes
and identical, while the interconnect is programmable. The more general wavefront processors, by contrast, employ sophisticated and individually programmable
Systolic_array
vertically‡ w.r.t. the nominal on-axis position. Since a true spherical wavefront cannot be achieved in practice, designers try to make the lobe as wide
Acoustic_lobing
Product of geometric length and refractive index
interference patterns. For a monochromatic wave emitted from a point source, a wavefront is a surface of constant phase. In geometrical optics, this means that
Optical_path_length
History of research by Augustin-Jean Fresnel
crossed by a traveling wavefront becomes the source of a secondary wavefront. Given the initial position of a traveling wavefront, any later position (according
Fresnel's_physical_optics
Type of 3D display
type of 3D display that utilizes light diffraction to reconstruct a 3D wavefront of an object or a scene and therefore display a three-dimensional image
Holographic_display
Rate at which the phase of the wave propagates in space
The phase velocity of a wave is the speed of any wavefront, a surface of constant phase. This is the velocity at which the phase of any constant-frequency
Phase_velocity
Shock wave from flying at the speed of sound
travelling at 1.4 times the speed of sound (Mach 1.4). Since the source is moving faster than the sound waves it creates, it leads the advancing wavefront.
Sonic_boom
Acoustics process
Digital room correction may involve minimum phase algorithms, to maintain wavefront coherence over the intended frequency range.
Digital_room_correction
Path planner similar to potential field method with breadth first search modification
The wavefront expansion algorithm is a specialized potential field path planner with breadth-first search to avoid local minima. It uses a growing circle
Wavefront_expansion_algorithm
Formula used in radio astronomy
wavefront from an incoherent source will appear mostly coherent at large distances. Intuitively, this can be understood by considering the wavefronts
Van_Cittert–Zernike_theorem
GPU microarchitecture and accompanying instruction set architecture
instructions every cycle. Wave32: GCN used a wavefront size of 64 threads (work items). RDNA supports both wavefront sizes of 32 and 64 threads. Workgroup Processors:
RDNA_(microarchitecture)
Astronomical observatory in Chile
reduced image quality. The telescope uses an active optics system, with wavefront sensors at the corners of the camera, to keep the mirrors accurately figured
Vera_C._Rubin_Observatory
Radiance of a surface
light. In an optically isotropic medium, the rays are normals to the wavefronts, but in an optically anisotropic crystalline medium, they are in general
Spectral_radiance
Optical component which splits light into several beams
possible such as optical encoders for high-precision motion control and wavefront measurement. For typical applications, a reflective grating has ridges
Diffraction_grating
Phenomenon wherein objects appear to move about their true positions in the sky
as shown in the figure, then the wavefront becomes angled, by an angle tan(α)=tdw/dx. Now, say in time t the wavefront has moved by a span dz≈ct (assuming
Aberration_(astronomy)
Solar telescope in the Canary Islands
a 256-actuator deformable mirror and a 156-subaperture Shack-Hartmann wavefront sensor. Efforts are underway to implement multi-conjugate AO in 2014.[needs
GREGOR_Solar_Telescope
Branch of optics
to outgoing wavefront w4 and the rays perpendicular to incoming wavefront w2 will be coupled to outgoing wavefront w3 and these wavefronts may be any shape
Nonimaging_optics
Aircraft that travels faster than the speed of sound
faster than the sound waves it creates, it actually leads the advancing wavefront. The sound source will pass by a stationary observer before the observer
Supersonic_aircraft
In optics, piston is the mean value of a wavefront or phase profile across the pupil of an optical system. The piston coefficient is typically expressed
Piston_(optics)
Function for integral Fourier-like transform
the Huygens–Fresnel principle that treats each point in a propagating wavefront as a collection of individual spherical wavelets. The characteristic bending
Wavelet
3D modelling application
gMotor .gmt Richard Burns Rally .scg Test Drive Unlimited .3dg Test Drive Unlimited 2 .3dg Virtual Tuning .vmsh .vloc WaveFront OBJ .obj Xpand Rally .3da
Zmodeler
Array of antennas creating a steerable beam
lines show the wavefronts of the radio waves emitted by each element. These are timed so that each antenna element emits a wavefront relative to the
Phased_array
Angle between converging or diverging light rays
perpendicular to the wavefront of the light, thus the vergence of the light is directly related to the radii of curvature of the wavefronts. A convex lens or
Vergence_(optics)
Optical element that reflects and diffracts light
angle between the input and the normal to the grating. The dispersed wavefront sensing system (as part of the NIRCam instrument) on the James Webb Space
Grism
CGI sword-and-sorcery children's television series
using a third-dimensional computer graphics application known as Alias Wavefront Maya. King Edwin, ruler of a medieval-like Kingdom is assassinated by
Xcalibur
Physics demonstration device
through all five balls about ten times, although dispersing to less of a wavefront with more reflections. This is fast enough for the Hertzian solution to
Newton's_cradle
Set of polygons to define the surface of a 3D model
Rhinoceros 3D .dxf, .dwg Drawing Exchange Format Autodesk AutoCAD .obj Wavefront OBJ Wavefront Technologies Various ASCII format describing 3D geometry. All faces'
Polygon_mesh
Topics referred to by the same term
dictionary. Holography is a technique for recording and reconstruction of wavefronts. Holography and holographic may also refer to: Holograph, a document written
Holography_(disambiguation)
Heart conduction disease
tissue with differing refractory periods can lead to a normally smooth wavefront of depolarisation undergoing wavebreak leading to re-entrant arrhythmias
Brugada_syndrome
Water wave traveling up a river or narrow bay because of an incoming tide
from a single breaking wavefront with a roller — somewhat like a hydraulic jump— to undular bores, comprising a smooth wavefront followed by a train of
Tidal_bore
Origin point beneath an air explosion
plotting of the fault along which movement is occurring. The expanding wavefront from the earthquake's rupture propagates at a speed of several kilometers
Hypocenter
Type of antenna
(C). The moving red lines show the wavefronts of the radio waves emitted by each element. The individual wavefronts are spherical, but they combine (superpose)
Passive electronically scanned array
Passive_electronically_scanned_array
Differential equation for the description of waves or standing wave
{\displaystyle D=1} case, the Green's function solution is the sum of two wavefronts sgn ( t − x ) 4 + sgn ( t + x ) 4 {\displaystyle {\frac {\operatorname
Wave_equation
File format designed to store three-dimensional data from 3D scanners
lab under the direction of Marc Levoy. Its design was inspired by the Wavefront .obj format. However, the Obj format lacked extensibility for arbitrary
PLY_(file_format)
Thought experiment establishing quantum ideas
illuminated from below by light depicted as both photons and waves, with wavefronts shown as blue lines. Photons that enter the microscope deviate from the
Heisenberg's_microscope
Measure of electromagnetic transmission
factor (VF) of a transmission medium is the ratio of the speed at which a wavefront (of an electromagnetic signal, a radio signal, a light pulse in an optical
Velocity_factor
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