The Tusi couple (also known as Tusi's mechanism) is a mathematical device in which a small circle rotates inside a larger circle twice the diameter of...

al-Hasan al-Tusi (1201 – 1274), also known as Nasir al-Din al-Tusi (Arabic: نصیر الدین الطوسی; Persian: نصیر الدین طوسی) or simply as (al-)Tusi, was a Persian...

inversor 3 Kumara-Kampling inversor Tusi couple (1247) according to the diagrams in the translation of the copy of Tusi's original description: Small circle...

hypocycloid called Tusi couple was first described by the 13th-century Persian astronomer and mathematician Nasir al-Din al-Tusi in Tahrir al-Majisti...

works of al-Urdi, al-Tusi and al-Shatir). It has been argued that Copernicus could have independently discovered the Tusi couple or took the idea from...

motion for the Tusi couple. Although it seems that Copernicus used Albert's ideas, he highly relied on Islamic sources for the Tusi couple. Copernicus's...

celestial worlds. In the late 13th century, Nasir al-Din al-Tusi created the Tusi couple, as pictured above. Other notable astronomers from the later...

translated some of al-Tusi's works from Arabic into Byzantine Greek. Several Byzantine Greek manuscripts containing the Tusi-couple are still extant in...

dissatisfying and replaced it by adding a geometrical technique called a Tusi-couple, which generates linear motion from the sum of two circular motions....

translated some of al-Tusi's works from Arabic into Byzantine Greek. Several Byzantine Greek manuscripts containing the Tusi couple are still extant in...

Nasir Al-Din al-Tusi was the lead astronomer and first director of the observatory. His most notable work was the creation of the Tusi-couple, a geometric...

lemma". Nasīr al-Dīn al-Tūsī (1201–1274) resolved significant problems in the Ptolemaic system by developing the Tusi-couple as an alternative to the...

{2{\sqrt {d/r}}}{1+(d/r)}}} becoming 1 when d = r {\displaystyle d=r} (see Tusi couple). The classic Spirograph toy traces out hypotrochoid and epitrochoid...

such straight lines. This circle corresponds to the smaller circle in a Tusi couple. The point midway between the pivots orbits in a circle around the point...

technical realization of the motion of the paper strip can be achieved by a Tusi couple (see animation). The device is able to draw any ellipse with a fixed...

innovative mathematical device called the Tusi couple. The Maragheh observatory held around 400,000 books salvaged by Tusi from the siege of Baghdad and other...

are slightly offset along the crankshaft axis (which creates a rocking couple). Another solution is to use master-and-slave connecting rods, where the...

for the appearances of Mercury, showing the multiplication of epicycles using the Tusi couple, thus eliminating the Ptolemaic eccentrics and equant....

equant and eccentrics at Maragheh observatory, and introduction of Tusi-couple by Al-Tusi. Alternative models later proposed, including the first accurate...

al-Tusi was the director of the Maragheh observatory, and made many new discoveries while he was there. Such discoveries include the Tusi-couple, a system...

Mechanisms Beam Cataract Centrifugal governor Connecting rod Crank Crankshaft Tusi couple hypocycloidal straight line mechanism Link chain Parallel motion Plate...

Mechanisms Beam Cataract Centrifugal governor Connecting rod Crank Crankshaft Tusi couple hypocycloidal straight line mechanism Link chain Parallel motion Plate...

Mechanisms Beam Cataract Centrifugal governor Connecting rod Crank Crankshaft Tusi couple hypocycloidal straight line mechanism Link chain Parallel motion Plate...

Mechanisms Beam Cataract Centrifugal governor Connecting rod Crank Crankshaft Tusi couple hypocycloidal straight line mechanism Link chain Parallel motion Plate...

engines power various types of hoists. Refrigeration engines are typically coupled to ammonia compressors. Stationary engines could be classified by the manufacturer...

Mechanisms Beam Cataract Centrifugal governor Connecting rod Crank Crankshaft Tusi couple hypocycloidal straight line mechanism Link chain Parallel motion Plate...

Mechanisms Beam Cataract Centrifugal governor Connecting rod Crank Crankshaft Tusi couple hypocycloidal straight line mechanism Link chain Parallel motion Plate...

a planetary nebula that displays delicate, spirograph-like filigree. Tusi couple Knight, John I. (1828). "Mechanics Magazine". Knight; Lacey – via Google...

Rolling Gear Locus (mathematics) Superposition principle Spirograph Tusi couple Rosetta (orbit) "Cissoid" on www.2dcurves.com "Sturm's roulette" on www...

Mechanisms Beam Cataract Centrifugal governor Connecting rod Crank Crankshaft Tusi couple hypocycloidal straight line mechanism Link chain Parallel motion Plate...