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Measurement method using interference of waves
Interferometry is a technique which uses the interference of superimposed waves to extract information. Interferometry typically uses electromagnetic waves
Interferometry
Array used for astronomical observations
astronomical objects such as stars, nebulas and galaxies by means of interferometry. The advantage of this technique is that it can theoretically produce
Astronomical_interferometer
Sea interferometry, also known as sea-cliff interferometry, is a form of radio astronomy that uses radio waves reflected off the sea to produce an interference
Sea_interferometry
Spectral interferometry (SI) or frequency-domain interferometry is a linear technique used to measure optical pulses, with the condition that a reference
Spectral_interferometry
Measurement technique
White light interferometry is a non-contact optical method for surface height measurement on 3D structures with surface profiles varying between tens of
White_light_interferometry
Analytical technique that probes molecular layers adsorbed to the surface of a waveguide
Dual-polarization interferometry (DPI) is an analytical technique that probes molecular layers adsorbed to the surface of a waveguide using the evanescent
Dual-polarization interferometry
Dual-polarization_interferometry
Phenomenon resulting from the superposition of two waves
specific time interval. Interferometry is still fundamental in establishing the calibration chain in length measurement. Interferometry is used in the calibration
Wave_interference
Form of particle interferometry
Ramsey interferometry, also known as the separated oscillating fields method, is a form of particle interferometry that uses the phenomenon of magnetic
Ramsey_interferometry
Interferometry examines the general interference phenomena between pairs of signals in order to gain useful information about the subsurface. Seismic interferometry
Seismic_interferometry
Comparing widely separated telescope wavefronts
Very-long-baseline interferometry (VLBI) is a type of astronomical interferometry used in radio astronomy. In VLBI a signal from an astronomical radio
Very-long-baseline interferometry
Very-long-baseline_interferometry
Astronomical imaging methods
divided into the shift-and-add (image stacking) method and the speckle interferometry methods. These techniques can dramatically increase the resolution of
Speckle_imaging
Optical biosensing technology
Bio-layer interferometry (BLI) is an optical biosensing technology that analyzes biomolecular interactions in real-time without the need for fluorescent
Bio-layer_interferometry
Measuring technique
Holographic interferometry (HI) is a technique that enables the measurement of static and dynamic displacements of objects with optically rough surfaces
Holographic_interferometry
Technique used to measure 3D topography using shifted interference
Phase-shifting interferometry (PSI) is an optical metrology technique for measuring surface topography and wavefront shape to sub-nanometre precision.
Phase-shifting_interferometry
Grating-coupled interferometry (GCI) is a biophysical characterization method mainly used in biochemistry and drug discovery for label-free analysis of
Grating-coupled interferometry
Grating-coupled_interferometry
Carrier Interferometry (CI) is a spread spectrum scheme designed to be used in an Orthogonal Frequency-Division Multiplexing (OFDM) communication system
Carrier_interferometry
Directional radio antenna used in radio astronomy
processing facility. This process is known as Very Long Baseline Interferometry (VLBI). Interferometry does increase the total signal collected, but its primary
Radio_telescope
Scientific Electronic Device
nuller is an optical instrument, e.g., a beam combiner for nulling interferometry, used to block or cancel out a strong source so that fainter signals
Nuller
Form of radar used to create images of landscapes
and deforestation. Volcano and earthquake monitoring use differential interferometry. SAR can also be applied for monitoring civil infrastructure stability
Synthetic-aperture_radar
In optical astronomy, interferometry is used to combine signals from two or more telescopes to obtain measurements with higher resolution than could be
Astronomical optical interferometry
Astronomical_optical_interferometry
Interferometer using neutron diffraction to make precise measurements
wave-like nature of neutrons, and other related phenomena, to be explored. Interferometry inherently depends on the wave nature of the object. As pointed out
Neutron_interferometer
Interferometric technique
Self-mixing or back-injection laser interferometry is an interferometric technique in which a part of the light reflected by a vibrating target is reflected
Self-mixing_interferometry
Interferometry technique
SU(1,1) interferometry is a technique that uses parametric amplification for splitting and mixing of electromagnetic waves for precise estimation of phase
SU(1,1)_interferometry
Aperture masking interferometry (or Sparse aperture masking) is a form of speckle interferometry, that allows diffraction limited imaging from ground-based
Aperture masking interferometry
Aperture_masking_interferometry
Interferometer which uses the wave-like nature of atoms
include accelerometers, rotation sensors, and gravity gradiometers. Interferometry splits a wave into a superposition along two different paths. A spatially
Atom_interferometer
Coherence scanning interferometry (CSI) is any of a class of optical surface measurement methods wherein the localization of interference fringes during
Coherence scanning interferometry
Coherence_scanning_interferometry
Geodesy and remote sensing technique
amplitude and the absolute phase of the return signal data. In contrast, interferometry uses differential phase of the reflected radiation, either from multiple
Interferometric synthetic-aperture radar
Interferometric_synthetic-aperture_radar
Subfield of astronomy that studies celestial objects at radio frequencies
telescopes utilizing the techniques of radio interferometry and aperture synthesis. The use of interferometry allows radio astronomy to achieve high angular
Radio_astronomy
Optical device with parallel mirrors
In optics, a Fabry–Pérot interferometer (FPI), or etalon, is an optical cavity made from two parallel reflecting surfaces (mirrors). Optical waves can
Fabry–Pérot_interferometer
European space mission to measure gravitational waves
observatory. It aims to measure gravitational waves directly by using laser interferometry. The LISA concept features three spacecraft arranged in an equilateral
Laser Interferometer Space Antenna
Laser_Interferometer_Space_Antenna
Topics referred to by the same term
the free dictionary. Null may refer to: Nuller, an optical tool using interferometry to block certain sources of light Null (SQL) (or NULL), a special marker
Null
Electronic speckle pattern interferometry (ESPI), also known as TV holography, is a technique that uses laser light, together with video detection, recording
Electronic speckle pattern interferometry
Electronic_speckle_pattern_interferometry
Compact astronomical body
in its observations of Sagittarius A* and M87*. Gravitational-wave interferometry can be used to detect merging black holes and other compact objects
Black_hole
Quantum correlations related to wave-particle duality
detector, and second, that according to Maxwell's equations, intensity interferometry should work. Others, such as Edward Mills Purcell immediately supported
Hanbury Brown and Twiss effect
Hanbury_Brown_and_Twiss_effect
Utrasound technique
Coda wave interferometry is an ultrasound technique for detection of weak and local changes in complex inhomogeneous media. Sound waves that travel through
Coda_wave_interferometry
Common configuration for optical interferometry
The Michelson interferometer is a common configuration for optical interferometry and was invented by the American physicist Albert Abraham Michelson in
Michelson_interferometer
Relativistic effect due to rotation
after French physicist Georges Sagnac, is a phenomenon encountered in interferometry that is elicited by rotation. The Sagnac effect manifests itself in
Sagnac_effect
Cancelled NASA space telescope
The Space Interferometry Mission, or SIM, also known as SIM Lite (formerly known as SIM PlanetQuest), was a planned space telescope proposed by the U.S
Space_Interferometry_Mission
Fifth planet from the Sun
(1999). "Star Formation and Extrasolar Planet Studies with Near-Infrared Interferometry on the LBT". In Guenther, Eike; Stecklum, Bringfried; Klose, Sylvio
Jupiter
British astronomer
played a role in the development of interferometry in Radio Astronomy, and later astronomical optical interferometry and lucky imaging. He made the first
John_E._Baldwin
Astronomy device
An intensity interferometer is the name given to devices that use the Hanbury Brown and Twiss effect. In astronomy, the most common use of such an astronomical
Intensity_interferometer
on spectral shearing interferometry. Spectral shearing interferometry is similar in concept to lateral shearing interferometry, except the shearing is
Spectral phase interferometry for direct electric-field reconstruction
Spectral_phase_interferometry_for_direct_electric-field_reconstruction
Angle-resolved low-coherence interferometry (a/LCI) is an emerging[when?] biomedical imaging technology which uses the properties of scattered light to
Angle-resolved low-coherence interferometry
Angle-resolved_low-coherence_interferometry
Scientific instrument measuring light collimation
interferometer Spectral phase interferometry for direct electric-field reconstruction, a type of spectral shearing interferometry, which is similar in concept
Shearing_interferometer
performing surface height measurements of an object using coherence scanning interferometry (CSI) with spectrally-broadband, "white light" illumination. Different
White_light_scanner
Astronomical observatory in Los Angeles County, California, US
North America, making it ideal for astronomy and in particular for interferometry. The increasing light pollution due to the growth of greater Los Angeles
Mount_Wilson_Observatory
Natural satellite orbiting Earth
Slade, M.A. (June 4, 1999). "Topography of the Lunar Poles from Radar Interferometry: A Survey of Cold Trap Locations" (PDF). Science. 284 (5420): 1658–1660
Moon
Speed of electromagnetic waves in vacuum
their product equalling c. This is described in more detail in the "Interferometry" section below. In 1983 the metre was defined as "the length of the
Speed_of_light
Technique in radio direction finding
and therefore two monopulse ratios are formed. Very-long-baseline interferometry Amplitude-comparison monopulse Monopulse radar Mahafza, Bassem R. (1998)
Phase-comparison_monopulse
Polish physicist (born 1952)
area of interest in particular concerns the Bell's theorem and quantum interferometry. He was born on 11 December 1952, in Gdynia, Polish People's Republic
Marek_Żukowski
Absolute distance measurement technique
Frequency scanning interferometry (FSI) is an absolute distance measurement technique, for measuring the distance between a pair of points, along a line-of-sight
Frequency scanning interferometry
Frequency_scanning_interferometry
Red supergiant star in the constellation Orion
"Speckle Interferometry". New Scientist. Vol. 78. pp. 238–40. Bibcode:1978NewSc..78..238W. Roddier, F. (1999). "Ground-based interferometry with adaptive
Betelgeuse
Imaging technique
depth-resolved images of biological tissue or other scattering media. It uses interferometry techniques to detect the amplitude and time-of-flight of reflected light
Optical_coherence_tomography
Device to determine relative phase shift
an 1891 article was refined by Mach in an 1892 article. Mach–Zehnder interferometry has been demonstrated with electrons as well as with light. The versatility
Mach–Zehnder_interferometer
Astronomical experiment
telescope interferometer. It uses bolometric interferometry, which combines the advantages of interferometry (reduction of systematic errors) and those
Qubic_experiment
Chart of tissue blood volume changes
laser Doppler imaging of pulse waves on the surface of the hand by holographic photoplethysmography from on-axis digital interferometry.
Photoplethysmogram
American astronomer
world's first digitally recorded, software correlated Very Long Baseline Interferometry (VLBI) system for radio astronomy, the Green Bank Interferometer. He
Barry_G._Clark
Enclosed structure
analysis of buildings affected by mining subsidence based on Differential Interferometry (Part III)". Engineering Failure Analysis. 24: 67–76. doi:10.1016/j
Building
also in hadron interferometry. Almost in parallel to the invention by Robert Hanbury-Brown and Richard Twiss of intensity interferometry in optics, Gerson
Bose–Einstein_correlations
Australian astronomer
astronomy, leading the development of aperture masking interferometry and astronomical optical interferometry. He is a professor of astrophysics at the School
Peter_Tuthill_(astronomer)
Austrian physicist (1939–2019)
(1979). Neutron Interferometry. Oxford: Clarendon Press. Rauch, H.; Badurek, G.; Zeilinger, Anton (1988). Matter Wave Interferometry. North Holland. Rauch
Helmut_Rauch
Observable quantity in imaging astronomical interferometry
an observable quantity in imaging astronomical interferometry, which allowed the use of interferometry with very long baselines. It forms the basis of
Closure_phase
InSAR images, named interferograms. ROI_PAC stands for Repeat Orbit Interferometry PACkage. It is a UNIX based software package. Although many sources
ROI_PAC
Telescope in the Atacama Desert, Chile
main VLT telescopes is to operate as four independent telescopes. The interferometry (combining light from multiple telescopes) is used about 20 percent
Very_Large_Telescope
American astronomer (born 1968)
He is an expert in optical (visible and near-infrared) astronomical interferometry. He currently works at the Lowell Observatory as the Director of Science
Gerard_van_Belle
inexpensive method for measuring radial velocity is "externally dispersed interferometry". Until around 2012, the radial-velocity method (also known as Doppler
Methods of detecting exoplanets
Methods_of_detecting_exoplanets
Mixing signals from many telescopes to produce images with high angular resolution
Aperture synthesis or synthesis imaging is a type of interferometry that mixes signals from a collection of telescopes to produce images having the same
Aperture_synthesis
Wolf–Rayet star in the constellation Dorado
times fainter than the cluster and can only be resolved using speckle interferometry. In 1960, a group of astronomers working at the Radcliffe Observatory
R136a1
Brightest star in the constellation Aquila
(2006). "Resolving the Effects of Rotation in Altair with Long-Baseline Interferometry". The Astrophysical Journal. 636 (2): 1087–1097. arXiv:astro-ph/0509236
Altair
Austrian quantum physicist
Zeilinger's earliest work is perhaps his least known. His work on neutron interferometry has provided a foundation for his later research. As a member of the
Anton_Zeilinger
Radio astronomy observatory in New Mexico, US
relocated to a number of prepared positions, allowing aperture synthesis interferometry with up to 351 independent baselines: in essence, the array acts as
Very_Large_Array
Recording to reproduce a three-dimensional light field
a wide range of other uses, including data storage, microscopy, and interferometry. In principle, it is possible to make a hologram for any type of wave
Holography
Turkish physicist
Fields Quantum physics Institutions Cavendish Laboratory, University of Cambridge Thesis Multiparameter Entanglement and Quantum Interferometry. (2002)
Mete_Atatüre
NASA/ESA/CSA space telescope launched in 2021
BOTS mode: the Jupiter-sized planet HAT-P-14b NIRISS aperture masking interferometry (AMI): A precise detection of the very low-mass companion star AB Doradus
James_Webb_Space_Telescope
Atom-based system to determine relative location
instrument which measures relative position using the technique of atom interferometry. It includes an ensemble of accelerometers and gyroscope based on quantum
Quantum_compass
interferometer (white light) Double-slit interferometer Dual-polarization interferometry Fabry–Pérot interferometer Fizeau interferometer Fourier-transform interferometer
List of types of interferometers
List_of_types_of_interferometers
Type of common-path interferometer
magnitude greater than standard Fizeau based systems. Phase-shifting [see Interferometry] versions have been created to increase measurement resolution and efficiency
Point diffraction interferometer
Point_diffraction_interferometer
ISO collection of international standards
Part 604: Nominal characteristics of non-contact (coherence scanning interferometry) instruments Part 605: Nominal characteristics of non-contact (point
ISO_25178
First planet from the Sun
not shed much further light on Mercury, but radio astronomers using interferometry at microwave wavelengths, a technique that enables removal of the solar
Mercury_(planet)
medium restores the ideal interference conditions. In immersion Mirau interferometry, the interference patterns needed to reproduce the image are acquired
Mirau_interferometer
Galaxy containing the Solar System
for the Age and Mass of the Methuselah Star HD 140283 Using MESA and Interferometry and Implications for 1D Convection". Research Notes of the AAS. 5 (5):
Milky_Way
Shearography or Speckle pattern shearing interferometry is a measuring and testing method similar to holographic interferometry. It uses coherent light or coherent
Shearography
Branch of astronomy involving positioning and movements of celestial bodies
distorting effects of the Earth's atmosphere. NASA's planned Space Interferometry Mission (SIM PlanetQuest) (now cancelled) was to utilize astrometric
Astrometry
New Zealand biophysicist (1969–2026)
PMC 4909539. PMID 27143509. Neutze, Richard (1995). Acceleration and optical interferometry (PhD thesis). UC Research Repository, University of Canterbury. hdl:10092/6569
Richard_Neutze
Downward vertical movement of the Earth's surface
induced by aquifer overexploitation using advanced Differential SAR interferometry: Vega Media of the Segura river (SE Spain) case study. Remote Sensing
Subsidence
Topics referred to by the same term
electrical signals are of sufficient quality Sine integral, Si(x) Spectral interferometry, attosecond physics technique Systems integrator, in engineering Si
Si
Glass tank of water demonstrating the basic properties of waves
In physics, a ripple tank is a shallow glass tank of water used to demonstrate the basic properties of waves. It is a specialized form of a wave tank.
Ripple_tank
The Joint Institute for Very Long Baseline Interferometry European Research Infrastructure Consortium (JIVE) was established by a decision of the European
Joint Institute for Very Long Baseline Interferometry European Research Infrastructure Consortium
Joint_Institute_for_Very_Long_Baseline_Interferometry_European_Research_Infrastructure_Consortium
British physicist (1907–1973)
for the Exhibition of 1851. There, from 1932 to 1934 he researched interferometry under Prof. A. Fowler and began writing "Hyperfine Structure in Line
Samuel_Tolansky
Obsolete physics theory
Emission theory, also called emitter theory or ballistic theory of light, was a competing theory for the special theory of relativity, explaining the results
Emission_theory_(relativity)
American physicist (1852–1931)
often referred to as "Michelson Stellar Interferometry". This was to distinguish it from speckle interferometry, but should not be confused with the Michelson
Albert_A._Michelson
including geometric optics, physical optics, radiometry, diffraction, and interferometry. There are different forms of the Poynting vector, the most common are
List_of_optics_equations
Nearest star to the Solar System
of its radiated power is at infrared wavelengths. In 2002, optical interferometry with the Very Large Telescope (VLTI) found that the angular diameter
Proxima_Centauri
The angular diameters of stars can be measured directly using stellar interferometry. Other methods can use lunar occultations or from eclipsing binaries
List_of_largest_stars
Global radio telescope array
telescopes. The EHT project combines data from several very-long-baseline interferometry (VLBI) stations around Earth, which form a combined array with an angular
Event_Horizon_Telescope
Ionizing radiation that presents as free neutrons
activation analysis Fundamental research with neutrons: Ultracold neutrons, Interferometry Fast neutron therapy Neutron capture therapy Infrastructure Neutron
Neutron_radiation
Device used to measure gravitational waves
resonant antennas has occurred. A more sensitive detector uses laser interferometry to measure gravitational-wave induced motion between separated 'free'
Gravitational-wave observatory
Gravitational-wave_observatory
One technique is triple Laue interferometry (LLL interferometry). High energy X-rays Cash, Webster. "X-ray Interferometry". Center for Astrophysics and
X-ray_interferometer
Network of radio telescopes across Europe that link together for radio interferometry
resolution observations of cosmic radio sources using very-long-baseline interferometry (VLBI). The EVN is the most sensitive VLBI array in the world, and the
European_VLBI_Network
Imaging systems using changes in phase
imaging (GBI) includes Shearing interferometry or X-ray Talbot interferometry (XTI), and polychromatic far-field interferometry (PFI). Since the first X-ray
Phase-contrast_X-ray_imaging
INTERFEROMETRY
INTERFEROMETRY
INTERFEROMETRY
INTERFEROMETRY
Boy/Male
Hindu
Black horse, Strong
Girl/Female
Arabic
Light; To Illuminate
Boy/Male
British, Danish, English, Norse
From the Spring
Boy/Male
Tamil
The Moon
Boy/Male
Indian, Punjabi, Sikh
Light of the Lord of Mind
Girl/Female
Tamil
Samprada | ஸஂபà¯à®°à®¤à®¾Â
Heard of God, Name of God
Girl/Female
English
Dearly loved.
Girl/Female
Arabic, Australian, Czechoslovakian
Delicious Fruit
Girl/Female
American, Australian, British, English, Latin
Silence; An Abbreviation of Anastacia
Girl/Female
American, British, Celtic, Christian, English
Bird; Songbird; Grace
INTERFEROMETRY
INTERFEROMETRY
INTERFEROMETRY
INTERFEROMETRY
INTERFEROMETRY