intensity interferometer

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• Intensity interferometer — 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 interferometer is to determine the apparent angular diameter of a radio source or star …   Wikipedia

• Narrabri Stellar Intensity Interferometer — The Narrabri Stellar Intensity Interferometer (NSII) was the first astronomical instrument to measure the diameters of a large number of stars at visible wavelengths. It was designed by (amongst others) Robert Hanbury Brown, who received the… …   Wikipedia

• Delay line interferometer — A delay line interferometer (DLI) can be a Mach Zehnder interferometer or Michelson interferometer based on two beam interference, in which one beam is time delayed to the other by a desired interval. Delay line interferometers are also known as… …   Wikipedia

• Fabry–Pérot interferometer — Étalon redirects here. For the commune in Somme, France, see Étalon, Somme. Interference fringes, showing fine structure, from a Fabry–Pérot etalon. The source is a cooled deuterium lamp. In optics, a Fabry–Pérot interferometer or etalon is typic …   Wikipedia

• Fabry-Pérot interferometer — In optics, a Fabry Pérot interferometer or etalon is typically made of a transparent plate with two reflecting surfaces, or two parallel highly reflecting mirrors. (Technically the former is an etalon and the latter is an interferometer, but the… …   Wikipedia

• Mirau interferometer — The figure shows the optical path of a Mirau interferometer. Reference beam (5 4 6) and object beam (5 7 6) have identical optical path length and can thus cause white light interference. Parts of the Mirau interferometer: 1. Lens of the… …   Wikipedia

• optical interferometer — ▪ instrument       instrument for making precise measurements for beams of light of such factors as length, surface irregularities, and index of refraction. It divides a beam of light into a number of beams that travel unequal paths and whose… …   Universalium

• List of types of interferometers — Field and linear interferometers = *Astronomical interferometer / Michelson stellar interferometer *Classical interference microscopy *Cyclic interferometer *Diffraction grating interferometer (white light) *Double slit interferometer *Fabry… …   Wikipedia

• Astronomical optical interferometry — One of the first astronomical interferometers was built on the Mount Wilson Observatory s reflector telescope in 1920 in order to measure the diameters of stars. The red giant star Betelgeuse was among the first to have its diameter determined in …   Wikipedia

• Robert Hanbury Brown — AC (31 August, 1916 ndash; 16 January, 2002) was a British astronomer and physicist born in Aruvankadu, India. He studied electrical engineering at the University of London, from where he received a Master s degree in telecommunication in 1935.… …   Wikipedia

• Richard Q. Twiss — (1920 ndash; 20 May, 2005) is famous for his work on the Hanbury Brown and Twiss effect with Robert Hanbury Brown. This led to the development of the Hanbury Brown Twiss intensity interferometer in the UK in 1954. Their work was controversial as… …   Wikipedia