Richard Q. Twiss

Richard Q. Twiss

Richard Q. Twiss (1920 – 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 it appeared to contradict the established beliefs about quantum interference. He and Brown received the Eddington Medal of the Royal Astronomical Society for their work in 1968.

Richard Twiss was born in Simla in India but was educated in England. He read mathematics at Cambridge, completing the Mathematical Tripos with distinction, but his early contributions were to the theory of radar and basic electronics. His work in this area wasincluded in the famous "five foot shelf"--a series of reference books in electronic engineering compiled at MIT that was the circuit designer's bible in the 1950s. He was awarded a Doctor of Science degree by MIT in 1949.

Twiss went on to help construct the Narrabri Stellar Intensity Interferometer. Observations with the interferometer began in 1965. Measurements made between 1965 and 1974 were used to establish the temperature scale for stars hotter than the Sun and this scale is still in use.

The intensity interferometer has a very poor signal-to-noise ratio compared to the classical "Michelson" stellar interferometer. Twiss decided to pursue the Michelson alternative at the National Physical Laboratory at Teddington in the UK. John Davis worked with him for a short while on this project.

When the Royal Observatory, Edinburgh established its outstation at Monte Porzio Catone just south of Rome, Twiss decided to move his Michelson interferometer there. Not only was the weather more conducive to astronomy, the food and wine were much superior to what was available in Teddington!

Speckle interferometry was discovered during that period by Antoine Labeyrie. This stimulated a renewed interest around the world in interferometry. In particular, John Davis and Hanbury Brown became convinced that a Michelson interferometer would be cheaper to build and have superior performance to a new intensity interferometer.

In the mid-1970s Twiss's non-scientific interests gradually took over and he effectively retired from active involvement in science.

In the 1970s he made it clear that he regarded Australia as a colonial backwater. His reaction when told that William J. Tango was going to join Davis and Brown in Sydney was typical. "But William," he said, "they eat peas out of tins!"

In spite of that, a few years before his death Twiss visited Australia and fell in love with it. In 2004 he applied for permanent residence. He died on 19 May 2005.

He is mentioned in the book "BOFFIN : A Personal Story of the Early Days of Radar, Radio Astronomy and Quantum Optics" ISBN 0-7503-0130-9, by Hanbury Brown

References

*

*

*


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Twiss — is a surname, and may refer to:* Horace Twiss, an English writer. * Michael Twiss, an English footballer. * Peter Twiss, a British pilot. * Richard Twiss, co founder and president of Wiconi International. * Richard Q. Twiss, an Indian scientist.… …   Wikipedia

  • Richard Twiss — Saltar a navegación, búsqueda Richard Twiss (1747 1821), viajero, escritor e hispanista inglés. Biografía Hijo de un comerciante inglés residente en Holanda, éste le dejó suficiente dinero como para poder dedicarse a viajar y escribir el relato… …   Wikipedia Español

  • Richard de Morins — [Ricardus Anglicus, Richard of Mores, Richard de Mores, Ricardus de Mores.] (c.1161 1242) was an English canon lawyer. He was Archdeacon of Bologna, and taught law at the University of Bologna. On his return to England, he was a canon of Merton… …   Wikipedia

  • Twiss — Richard Twiss (* 24. August 1920; † 20. Mai 2005) war ein englischer Physiker und Radioastronom. Er entwickelte zusammen mit Robert Hanbury Brown das Intensitätsinterferometer. Auszeichnungen 1968 Eddington Medaille Personendaten NAME Twiss,… …   Deutsch Wikipedia

  • Richard Twiss — (* 24. August 1920; † 20. Mai 2005) war ein englischer Physiker und Radioastronom. Er entwickelte zusammen mit Robert Hanbury Brown das Intensitätsinterferometer. Auszeichnungen 1968 Eddington Medaille Kategorien: Geboren 1920Gestorben… …   Deutsch Wikipedia

  • Richard Twiss — Infobox Person name = Richard Twiss image size = 220px caption = Richard Twiss birth date = June 1954 birth place = flagicon|US Rosebud Lakota/Sioux Reservation, South Dakota death date = death place = occupation = Minister, Author spouse =… …   Wikipedia

  • Hanbury Brown and Twiss effect — The Hanbury Brown and Twiss effect (HBT) is any of a variety of correlation and anti correlation effects in the intensities received by two detectors from a beam of particles. HBT effects can generally be attributed to the dual wave particle… …   Wikipedia

  • Horace Twiss — ( c. 1787 ndash; 4 May 1849) was an English writer and politician born at Bath, being the son of Francis Twiss (1760 1827), a Shakespearian scholar who married Mrs. Siddons s sister, Fanny Kemble, and whose brother Richard (1747 1821) made a name …   Wikipedia

  • Sirio — Para otros usos de este término, véase Sirio (desambiguación). Sirio …   Wikipedia Español

  • 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

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”