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Navigation instrument
A quadrant is an instrument used to measure angles up to 90°. Different versions of this instrument could be used to calculate various readings, such
Quadrant_(instrument)
Navigational instrument
Harriot. Many types of instruments evolved from the cross-staff that can be classified as backstaffs. Only the Davis quadrant remains dominant in the
Backstaff
Measuring instrument used primarily in navigation; type of reflecting instrument
The octant, also called a reflecting quadrant, is a reflecting instrument used in navigation. The name octant derives from the Latin octans meaning eighth
Octant_(instrument)
Type of angle measuring device
precisely on the meridian. A mural instrument that measured angles from 0 to 90 degrees was called a mural quadrant. They were utilized as astronomical
Mural_instrument
Topics referred to by the same term
Look up Quadrant, quadrant, or quadrants in Wiktionary, the free dictionary. Quadrant may refer to: Quadrant Cycle Company, 1899 manufacturers in Britain
Quadrant
Type of quadrant used by medieval Arabic astronomers
A sine quadrant (Arabic: الربع المجيب, romanized: rub‘ul mujayyab), sometimes known as a "sinecal quadrant", was a type of quadrant used by medieval Arabic
Sine_quadrant
An Elton's quadrant is a derivative of the Davis quadrant. It adds an index arm and artificial horizon to the instrument, and was invented by English
Elton's_quadrant
Devices for observing, measuring or recording astronomical data
astronomical clock: medieval astronomical clock in the Czech Republic Quadrant: navigation instrument Reticle: aim markings in optical devices, e.g. crosshairs Retroreflector:
List of astronomical instruments
List_of_astronomical_instruments
English clergyman, mathematician, geometer and astronomer
measured in chains will thereby be easily calculated. Gunter's quadrant is an instrument made of wood, brass or other substance, containing a kind of stereographic
Edmund_Gunter
Historical place in New Delhi
"Jantar Mantar" means "instruments for measuring the harmony of the heavens". It consists of 13 architectural astronomical instruments. The site is one of
Jantar_Mantar,_New_Delhi
Five early C18 observatories in India
instruments, consisting of a gigantic triangular gnomon with the hypotenuse parallel to the Earth's axis. On either side of the gnomon is a quadrant of
Jantar_Mantar
Danish astronomer (1546–1601)
accuracy of the existing types of instrument – the sextant and the quadrant. He designed larger versions of these instruments, which allowed him to achieve
Tycho_Brahe
English instrument maker and science writer
Science, Tokyo Sea Quadrant by George Adams, at The Mariners' Museum Serial number, date, and signature from George Adams' quadrant, at The Mariners' Museum
George Adams (scientist, died 1772)
George_Adams_(scientist,_died_1772)
Instrument for measuring electric charge
An electrometer is an electrical instrument for measuring electric charge or electrical potential difference. There are many different types, ranging from
Electrometer
21 600 (viz., 60 minutes of arc × 360 degrees in four 90-degree quadrants; a quadrant being the length of the quarter-circle from the North Pole to the
History_of_the_metric_system
an English instrument maker who operated out of London from 1650 to 1661. He is known for his high-quality engravings of scales and quadrants. His colleagues
Henry Sutton (instrument maker)
Henry_Sutton_(instrument_maker)
Foremost astronomical observatory of France
lens for extremely long focal length aerial telescopes. In 1732 a quadrant instrument made by Langlois was established at the Observatory. In 1804 a telescope
Paris_Observatory
Class of navigational instruments
familiar with that instrument. There is no knowledge of whether this instrument was ever tested at sea. Newton's reflecting quadrant was similar in many
Reflecting_instrument
Persian mathematician and astronomer (940–998)
wall quadrant to observe the sky. It has been suggested that he was influenced by the works of al-Battani as the latter described a quadrant instrument in
Abu_al-Wafa'_al-Buzjani
Muslim astronomer and mathematician (died 929)
Ptolemy and described instruments such as horizontal and vertical sundials, the triquetrum, the mural instrument, and a quadrant instrument. Ibn al-Nadim wrote
Al-Battani
HMAS Quadrant (G11/D11/F01), named for the navigational instrument, was a Q-class destroyer operated by the Royal Navy as HMS Quadrant (G67/D17) during
HMAS_Quadrant
Power supply and voltage/current measurement unit
values. To accomplish this, SMUs have four-quadrant outputs. For characterization purposes SMUs are bench instruments similar to a curve tracer. They are also
Source_measure_unit
Mathematical instrument consisting of two hinged rulers
also incorporated a quadrant, and sometimes a clamp at the end of one leg which allowed the device to be used as a gunner's quadrant. The sector was invented
Sector_(instrument)
Tool for angle measurement
Like the Davis quadrant, the sextant allows celestial objects to be measured relative to the horizon, rather than relative to the instrument. This allows
Sextant
Tools used by navigators and pilots
instruments are used primarily to measure the elevation or altitude of a celestial object: Back staff, the best known of which is the Davis' quadrant
Navigational_instrument
Established 1633 in the Netherlands
de Volder handed over a catalogue of instruments which showed that the observatory owned two other quadrants, a 12-inch telescope, two objectives, and
Leiden_Observatory
British mathematical instrument maker
a British mathematical instrument maker with an interest in astronomy who was notable for making high quality mural quadrants, octants, and sextants.
John_Bird_(astronomer)
Medieval astrolabe found in England
Canterbury Astrolabe Quadrant is the only one of its kind known to have been definitely made in England. Astrolabes are calculation instruments that enable their
Canterbury_Astrolabe_Quadrant
Small telescope used for precise astrometry
exact direction of South or North: Meridian circles, Mural quadrants etc. Passage instruments (transportable, also for prime vertical transits) Zenith telescope
Transit_instrument
Device for measuring a physical quantity
Goniometer Graphometer Inclinometer Mural instrument Plurimeter Protractor Quadrant Reflecting instruments Octant Reflecting circles Sextant Theodolite
List_of_measuring_instruments
French mathematician
line of the quadrant. Christopher Clavius had earlier mentioned this idea but had not proposed to attach the scale permanently to the instrument. The name
Pierre_Vernier
Auxiliary scale of a measurement device, used to increase precision
today, they were originally developed for angle-measuring instruments such as astronomical quadrants. In some languages, the vernier scale is called a 'nonius'
Vernier_scale
Type of electronic circuit
by their function. A single-quadrant multiplier permits only one, typically positive, level on the inputs. A two-quadrant multiplier permits one input
Analog_multiplier
Tool used in the study or practice of mathematics
navigation, surveying and in the measurement of time. Instruments such as the astrolabe, the quadrant, and others were used to measure and accurately record
Mathematical_instrument
Measuring tool used in navigation and astronomy
had an arc of 90 / n {\displaystyle 90/n} degrees. Thus, the outermost quadrant would comprise 90° in 90 equal divisions, the next inner would have 89
Nonius_(device)
Ancient astronomical instrument
[self-published source?] The triquetrum performed the same function as the quadrant and was devised to overcome the difficulty of graduating arcs and circles
Triquetrum_(astronomy)
correction, M1, and M1A1 F82 F83 F84 Instrument, Azimuth M1910A1, M2 (degrees) F85 F86 Mount, Telescope, M9, M13 F87 Quadrant Elevation, M1917 F88 F89 F90 Telescope
List of the United States Army fire control and sighting material by supply catalog designation
List_of_the_United_States_Army_fire_control_and_sighting_material_by_supply_catalog_designation
Instrument for measuring, keeping or indicating time
Usually, they are driven by AC-synchronous motors. Clocks with analog quadrants, with a digital component, usually minutes and hours displayed analogously
Clock
Astronomical observatory in Sweden
mural quadrant affixed to a north–south wall, used to measure the altitude of stars as they passed the meridian. This, along with many other instruments of
Uraniborg
Navigation system formerly used by aircraft
commonly "the range", was the main navigation system used by aircraft for instrument flying in the 1930s and 1940s, until the advent of the VHF omnidirectional
Low-frequency_radio_range
The Quadrans Vetus is a medieval astronomical instrument. Known as the quadrans vetus ["old quadrant"], the three surviving medieval examples are in the
Quadrans_Vetus
Large 18-century astronomical instruments in India
Yantra, in two halves), Niyat Chakra, Kark Rashivalaya, and the Western Quadrant. The Dakshinottar Bhitti was built in the Jaipur, Ujjain, Varanasi and
Mishra_Yantra
American creativity researcher and author
brain quadrants, independent of brain anatomy facts, each with its own characteristic "genius". He developed the Herrmann Brain Dominance Instrument (HBDI)
Ned_Herrmann
Tycho Brahe's underground observatory on the island of Ven
equatorial instrument D = chamber with elevation and azimuth quadrant E = chamber with armillary sphere F = chamber with elevation and azimuth quadrant encompassed
Stjärneborg
of quadrants were invented by Muslims. Among them was the sine quadrant used for astronomical calculations, and various forms of the horary quadrant used
Astronomy in the medieval Islamic world
Astronomy_in_the_medieval_Islamic_world
English instrument maker and inventor
radius quadrant built by Sisson was found to be accurate within 1⁄120 of a degree, a very impressive level of accuracy. The components of the instrument arrived
Jonathan_Sisson
Type of cognitive style measurement and model
The Herrmann brain dominance instrument (HBDI) is a system to measure and describe thinking preferences in people, developed by William "Ned" Herrmann
Herrmann brain dominance instrument
Herrmann_brain_dominance_instrument
Nautical navigational instrument
would have replaced or complemented instruments such as the cross staff or quadrant as a navigator's instrument. The mariner's astrolabe was used until
Mariner's_astrolabe
Transversals are a geometric construction on a scientific instrument to allow a graduation to be read to a finer degree of accuracy. Their use creates
Transversal (instrument making)
Transversal_(instrument_making)
Kissing muscles
independent quadrants that interlace and give only an appearance of circularity. It is also one of the muscles used in the playing of all brass instruments and
Orbicularis_oris_muscle
Ancient astronomical instrument
the Geometric Square, the astronomical quadrant, and even celestial and terrestrial globes. The instrument is designed to be leveled precisely with
Cosmolabe
Angle measuring instrument
point) could be used as a cheap goniometer, level (optical instrument), inclinometer, or quadrant for a wide range of tasks. There are various tools designed
Goniometer
The Instrument of the Primum Mobile is also called the quadrant of Petrus Apianus, because he invented it and described it in the treatise Instrumentum
Instrument of the Primum Mobile
Instrument_of_the_Primum_Mobile
Astronomical instrument for timing of the passage of stars
has an eyepiece fitted with a micrometer. The idea of having an instrument (quadrant) fixed in the plane of the meridian occurred even to the ancient
Meridian_circle
Instrument that records seismic waves by measuring ground motions
bins arranged in a circle, to determine the quadrant of earthquake incidence. He completed the instrument in 1841. In response to a series of earthquakes
Seismometer
Star Trek: Deep Space Nine conflict
Cardassian Union, and, eventually, the Breen Confederacy against the Alpha Quadrant alliance of the United Federation of Planets, the Klingon Empire and, later
Dominion_War
Topics referred to by the same term
Sector/Sphere, an open source software suite Sector (instrument), a historic calculating instrument Sector (administrative division) Sector clock Sector
Sector
navigational instruments, including octants, sextants, telescopes, and compasses. One of the earliest instruments for nautical use was the quadrant; this was
Spencer,_Browning_&_Rust
Instrument used to measure the inclination of a surface relative to local gravity
An inclinometer or clinometer is an instrument used for measuring angles of slope, elevation, or depression of an object with respect to gravity's direction
Inclinometer
Aviation incident in 1977
cycles had caused water to be pushed inside the left elevator aft drive quadrant (also referred to as the bell crank), heavily corroding it and causing
Delta_Air_Lines_Flight_1080
Dental tool
Periodontal scalers are dental instruments used in the prophylactic and periodontal care of teeth (most often human teeth), including scaling and root
Periodontal_scaler
Episcopal Cathedral in Washington, D.C.
cathedral stands at Massachusetts and Wisconsin Avenues in the northwest quadrant of Washington. It is an associate member of the inter-denominational Washington
Washington_National_Cathedral
Distance along a portion of a meridian, for use in geodesy
ten-millionth of the distance from the North Pole to the Equator (the quadrant of the Earth's circumference), measured along the meridian passing through
Meridian_arc
degrees. It is used in gauges and displays, most commonly automotive instrument clusters. A typical automotive application is shown at the right. The
Air_core_gauge
German watchmaker
Instrumente und Feinmechanik (“nautical instruments and precision engineering”) is a German maker of nautical instruments, marine timepieces and wristwatches
Mühle_Glashütte
Mid-1950s – mid-1980s electric piano
conceptually similar to the Rhodes piano, though the sound is different. The instrument was invented by Benjamin Miessner, who had worked on various types of
Wurlitzer_electronic_piano
French scientific instrument maker
pantograph, measuring instruments, and six-foot quadrants for astronomical angle measurement. He was appointed official instrument maker for French astronomers
Claude_Langlois
Inflammation of the appendix
adjoining abdominal wall. This leads the pain to localize at the right lower quadrant. This classic migration of pain may not appear in children under three
Appendicitis
Astronomical instrument
romanized: al-Asṭurlāb; Persian: ستارهیاب, romanized: Setāreyāb) is an astronomical instrument dating to ancient times. It serves as a star chart and physical model
Astrolabe
Marine or aircraft radio-navigation instrument
automatic direction finder (ADF) is a marine or aircraft radio-navigation instrument that automatically and continuously displays the relative bearing from
Automatic_direction_finder
Geodetic survey from 1792 to 1798
ten-millionth of the distance from the North Pole to the Equator (the quadrant of the Earth's circumference), measured along the meridian passing through
Arc measurement of Delambre and Méchain
Arc_measurement_of_Delambre_and_Méchain
Unit of length
(1878). Statutes at large. pp. 308–341. "History of Calibration". Norwich Instrument Services. 2012. Archived from the original on August 4, 2021. Retrieved
Yard
1533 painting by Hans Holbein
selection of scientific instruments including two globes (one terrestrial and one celestial), a shepherd's dial, a quadrant, a torquetum, and a polyhedral
The_Ambassadors_(Holbein)
Device for marking graduations on measuring instruments
circles on an instrument and dividing each successive one with one fewer divisions than the adjacent outer circle. Thus the outermost quadrant would have
Dividing_engine
known as Gregory and Son. Gregory manufactured navigational instruments, including quadrants of the type invented by John Hadley and compasses. One of his
Henry Gregory (instrument maker)
Henry_Gregory_(instrument_maker)
Optical instrument for ultraviolet images
(II). EIT is built as a single telescope with a quadrant structure to the entrance mirrors: each quadrant reflects a different colour of EUV light, and
Extreme ultraviolet Imaging Telescope
Extreme_ultraviolet_Imaging_Telescope
Tower observatory in Mannheim, Baden-Württemberg, Germany
centres of contemporary astronomy. He was given an Astronomical Quadrant, by the instrument maker, Canivet. In 1759, he observed the return of the comet
Mannheim_Observatory
Measurement tool
of the sun. As a navigational tool, this instrument was eventually replaced, first by the backstaff or quadrant, neither of which required the user to stare
Jacob's_staff
UNESCO World Heritage Site in Jaipur
The Jantar Mantar is a collection of 19 astronomical instruments built by the Rajput king Sawai Jai Singh, the founder of Jaipur, Rajasthan, India. The
Jantar_Mantar,_Jaipur
Air navigation instrument
developed the quadrant. The octant was a further improvement. It could measure altitudes of up to 90° above the horizon. The first bubble instruments, which
Bubble_octant
Instrument to measure electric current
A galvanometer is an electromechanical measuring instrument for electric current. Early galvanometers were uncalibrated, but improved versions, called
Galvanometer
Weapons firing without line of sight on target
of the gunner's quadrant (see clinometer) in the 16th century introduced indirect fire guns because it enabled gunlaying by instrument instead of line
Indirect_fire
Another latitude-measuring instrument was the quadrant. Initially the quadrant was developed as an astronomical instrument and used in land based observatories
Iberian nautical sciences, 1400–1600
Iberian_nautical_sciences,_1400–1600
Device used with games or entertainment systems
on throttle and stick) controllers, composed of a joystick and throttle quadrant (see below) are a popular combination for flight simulation among its most
Game_controller
from the 16th century and saw iterative improvements such as the Davis quadrant. These were in use in parallel with the octant and early sextant; the sextant
History_of_latitude
Indian astronomer, mathematician and scholar (1835-1904)
distance from the Earth to the Sun with a bamboo pipe and traditional instruments. He was born in Purnimanta Pousha Krishna Ashtami, and died in Purnimanta
Pathani_Samanta
Information systems theory
what they call the Usefulness/EOU Grid, which is a 2×2 grid where each quadrant represents a different combination of the two attributes. In the context
Technology_acceptance_model
Medieval astronomical observatory
Brahe later used, and a wooden quadrant for measuring azimuths and elevations. His most important astronomical instrument, however, is the "observational
Constantinople observatory of Taqi ad-Din
Constantinople_observatory_of_Taqi_ad-Din
System to maintain vehicle trajectory in lieu of direct operator command
the actuator of a series yaw damper is clutched to the rudder control quadrant, and will result in pedal movement when the rudder moves. Some aircraft
Autopilot
The modern constellation Centaurus lies across two of the quadrants symbolized by the Azure Dragon of the East (東方青龍, Dōng Fāng Qīng Lóng), the Vermillion
Centaurus in Chinese astronomy
Centaurus_in_Chinese_astronomy
Constellations recognized by the International Astronomical Union
of stars Lists of stars by constellation Constellation family Galactic quadrant With the exception of Triangulum Australe (which was mentioned but not
IAU_designated_constellations
NASA satellite of the Explorer program
mirrors into quadrants. These segmented coatings were designed to provide identically sized and perfectly coaligned images. Which mirror quadrant was used
TRACE
Observatory in Samarkand, Uzbekistan
accompanying them. The primary instrument used to obtain the information in the Zij-I Sultani came from Ulugh Beg's observatory quadrant. He did not work alone
Ulugh_Beg_Observatory
Process of monitoring and controlling the movement of a craft or vehicle
pyramids. However, the first altitude measuring instrument to navigate extensively used at sea was the quadrant. This was reintroduced by Leonardo of Pisa
Navigation
Observatory
them in the 18th century. These included an eighteen-inch quadrant, a two-foot transit instrument, three Hadley sextants, an achromatic heliometer, a two-foot
Gotha_Observatory
Rail traffic control systems in Australia
chronological order of introduction: two-position lower quadrant semaphore, three-position upper quadrant semaphore, Double Light Colour Light and Single Light
Australian_railway_signalling
Type of interior garden or house
al-Andalus. Its classic form is a rectangular garden divided into four quadrants by two paved paths intersecting in the center, where a fountain is typically
Riad_(architecture)
Ancient Greek analogue astronomical computer
and thence to the pointer. Each of the three mechanisms can fit within a quadrant of the b1 extension, and they are thus all on a single plane parallel with
Antikythera_mechanism
Greco-Roman astronomer and geographer (c. 100–170)
observations had long been known. Other authors have pointed out that instrument warping or atmospheric refraction may also explain some of Ptolemy's observations
Ptolemy
Medieval astronomical instrument
The torquetum or turquet is a medieval astronomical instrument for taking and converting measurements made in three sets of coordinates: horizon, equatorial
Torquetum
QUADRANT INSTRUMENT
QUADRANT INSTRUMENT
Girl/Female
Tamil
Bonasri | போநாஸரீÂ
Flute, Instrument played by Lord Krishna
Bonasri | போநாஸரீÂ
Girl/Female
Tamil
A musical instrument, Wise, Far-sighted
Girl/Female
Tamil
Flute, Instrument played by Lord Krishna
Boy/Male
Arabic, Indian, Muslim, Punjabi, Sikh
Love; Nature; Faculty; Power; Strength; Potency
Boy/Male
Indian
Power, Might, Strength
Girl/Female
Tamil
One string instrument
Boy/Male
Muslim
Power, Might, Strength
Girl/Female
Afghan, Arabic, Muslim, Pakistani
One who Know the Recital of Quaran
Girl/Female
Tamil
A musical instrument, Wise, Far-sighted
Boy/Male
Muslim
Faculty. Power. Nature.
Girl/Female
Muslim/Islamic
It is used as verb in Quaran as "tanzeel" which means to send by God or to come from the havens.It was used for the revelations and it can also be spelled as Tanzeela
Surname or Lastname
English, Scottish, and Irish
English, Scottish, and Irish : occupational name for a player on the harp, from an agent derivative of Middle English, Middle Dutch harp ‘harp’. The harper was one of the most important figures of a medieval baronial hall, especially in Scotland and northern England, and the office of harper was sometimes hereditary. The Scottish surname is probably an Anglicized form of Gaelic Mac Chruiteir ‘son of the harper’ (from Gaelic cruit ‘harp’, ‘stringed instrument’). This surname has long been present in Ireland.
Surname or Lastname
English, Scottish, German, and Dutch
English, Scottish, German, and Dutch : from Middle English, Middle High German, Middle Dutch horn ‘horn’, applied in a variety of senses: as a metonymic occupational name for someone who made small articles, such as combs, spoons, and window lights, out of horn; as a metonymic occupational name for someone who played a musical instrument made from the horn of an animal; as a topographic name for someone who lived by a horn-shaped spur of a hill or tongue of land in a bend of a river, or a habitational name from any of the places named with this element (for example, in England, Horne in Surrey on a spur of a hill and Horn in Rutland in a bend of a river); as a nickname, perhaps referring to some feature of a person’s physical appearance, or denoting a cuckolded husband.Norwegian : habitational name from any of several farmsteads so named, from Old Norse horn ‘horn’, ‘spur of land’.Swedish : ornamental or topographic name from horn ‘horn’, ‘spur of land’.Jewish (Ashkenazic) : presumably from German Horn ‘horn’, adopted as a surname for reasons that are not clear. It may be purely ornamental, or it may refer to the ram’s horn (Hebrew shofar) blown in the Synagogue during various ceremonies.
Girl/Female
Tamil
Musical instrument
Boy/Male
Tamil
Musical instrument
Girl/Female
Tamil
Musical instrument worn by the dancer
Girl/Female
Tamil
Musical instrument
Surname or Lastname
English
English : habitational name from a place in East Yorkshire near Bridlington, so named from Old English hearpe ‘harp’ (the instrument or the device used for purifying sea salt) + hÄm ‘homestead’.
Girl/Female
Tamil
Bansuri | பாஂஸà¯à®°à¯€
Flute-musical instrument
Bansuri | பாஂஸà¯à®°à¯€
Surname or Lastname
English, Scottish, German, and Dutch
English, Scottish, German, and Dutch : from Horn 1 with the agent suffix -er; an occupational name for someone who made or sold small articles made of horn, a metonymic occupational name for someone who played a musical instrument made from the horn of an animal, or a topographic name for someone who lived at a ‘horn’ of land.habitational name from Horner in Diptford, Devon, which is named from Old English horn ‘horn of land’ + ora ‘hill spur’, ‘ridge’.Jewish (Ashkenazic) : variant of Horn 4.
QUADRANT INSTRUMENT
QUADRANT INSTRUMENT
QUADRANT INSTRUMENT
QUADRANT INSTRUMENT
QUADRANT INSTRUMENT
QUADRANT INSTRUMENT
QUADRANT INSTRUMENT
n.
The quarter of a circle, or of the circumference of a circle, an arc of 90¡, or one subtending a right angle at the center.
n.
One of the sights of a compass, quadrant, etc.
n.
A quadrat.
pl.
of Quadra
a.
Quadrate; square.
a.
A quadrate; a square.
n.
The quadrant of an azimuth circle.
n.
The fourth part; the quarter.
imp. & p. p.
of Quadrate
p. pr. & vb. n.
of Quadrate
n.
A modification of the quadrant, for measuring small angles.
n.
Same as Quadrate.
a.
The quadrate bone.
n.
An instrument for measuring altitudes, variously constructed and mounted for different specific uses in astronomy, surveying, gunnery, etc., consisting commonly of a graduated arc of 90¡, with an index or vernier, and either plain or telescopic sights, and usually having a plumb line or spirit level for fixing the vertical or horizontal direction.
pl.
of Quadrans
n.
One of the four parts into which a plane is divided by the coordinate axes. The upper right-hand part is the first quadrant; the upper left-hand part the second; the lower left-hand part the third; and the lower right-hand part the fourth quadrant.
a.
Of or pertaining to a quadrant; also, included in the fourth part of a circle; as, quadrantal space.
n.
An old instrument used for taking altitudes; -- called also geometrical square, and line of shadows.
n.
An instrument for taking altitudes, as a quadrant, sextant, etc.