al-qirān al-Tūsī
E1022093
al-qirān al-Tūsī is a geometric device from medieval Islamic astronomy, devised by Nasir al-Din al-Tusi to generate linear motion from the sum of two circular motions and used to refine Ptolemaic planetary models.
All labels observed (1)
| Label | Occurrences |
|---|---|
| al-qirān al-Tūsī canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T13132039 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
Target entity: al-qirān al-Tūsī Context triple: [Tusi couple, alsoKnownAs, al-qirān al-Tūsī]
-
A.
Al-Muqashqishah
Al-Muqashqishah is a term from early Islamic tradition referring to a specific form or aspect of the declaration of innocence (barā’ah) associated with dissociation from polytheism and its people.
-
B.
Sulh-i Kul
Sulh-i Kul was a Mughal-era doctrine of universal peace and tolerance that promoted religious harmony and equal treatment of all faiths in the empire.
-
C.
Rakhshandeh
Rakhshandeh is the birth name of Parvin E’tesami, a prominent 20th-century Iranian poet known for her didactic and socially conscious verse.
-
D.
Divan of Sana'i
The "Divan of Sana'i" is a celebrated collection of Persian mystical and lyrical poetry by the 12th-century poet Sana'i, foundational to the development of Sufi literature.
-
E.
Insha al-Dawa’ir
Insha al-Dawa’ir is a seminal philosophical and mystical treatise by the Sufi thinker Ibn Arabi that explores metaphysical concepts through the symbolism of circles and cosmological diagrams.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Target entity: al-qirān al-Tūsī Target entity description: al-qirān al-Tūsī is a geometric device from medieval Islamic astronomy, devised by Nasir al-Din al-Tusi to generate linear motion from the sum of two circular motions and used to refine Ptolemaic planetary models.
-
A.
Al-Muqashqishah
Al-Muqashqishah is a term from early Islamic tradition referring to a specific form or aspect of the declaration of innocence (barā’ah) associated with dissociation from polytheism and its people.
-
B.
Sulh-i Kul
Sulh-i Kul was a Mughal-era doctrine of universal peace and tolerance that promoted religious harmony and equal treatment of all faiths in the empire.
-
C.
Rakhshandeh
Rakhshandeh is the birth name of Parvin E’tesami, a prominent 20th-century Iranian poet known for her didactic and socially conscious verse.
-
D.
Divan of Sana'i
The "Divan of Sana'i" is a celebrated collection of Persian mystical and lyrical poetry by the 12th-century poet Sana'i, foundational to the development of Sufi literature.
-
E.
Insha al-Dawa’ir
Insha al-Dawa’ir is a seminal philosophical and mystical treatise by the Sufi thinker Ibn Arabi that explores metaphysical concepts through the symbolism of circles and cosmological diagrams.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical mechanism
ⓘ
geometric device ⓘ mathematical model ⓘ |
| aim |
to avoid non-uniform equant motion in Ptolemaic theory
ⓘ
to reconcile uniform circular motion with observed planetary motion ⓘ |
| alsoKnownAs | Tusi couple NERFINISHED ⓘ |
| appliesTo |
planetary models of Jupiter
ⓘ
planetary models of Mars ⓘ planetary models of Saturn ⓘ planetary models of Venus ⓘ |
| basedOn | composition of uniform circular motions ⓘ |
| category | geometric couple ⓘ |
| coordinateSystem | plane geometry ⓘ |
| countryOfOrigin | medieval Islamic world ⓘ |
| describedIn | works of Naṣīr al-Dīn al-Ṭūsī ⓘ |
| developer | Naṣīr al-Dīn al-Ṭūsī NERFINISHED ⓘ |
| dimension | two-dimensional mechanism ⓘ |
| etymology | "al-qirān" refers to coupling or conjunction ⓘ |
| field |
astronomy
ⓘ
celestial mechanics ⓘ geometry ⓘ mathematics ⓘ |
| hasPart |
diameter of the smaller circle
ⓘ
large circle ⓘ point on the diameter ⓘ smaller circle ⓘ |
| historicalPeriod | medieval period ⓘ |
| inception | 13th century ⓘ |
| influenced |
Renaissance astronomy
ⓘ
geometric kinematics ⓘ late medieval astronomical models ⓘ |
| languageOfName | Arabic ⓘ |
| mathematicalRepresentation | sum of two sinusoidal functions with equal amplitude and opposite phase ⓘ |
| motionType |
circular motion
ⓘ
linear oscillatory motion ⓘ |
| namedAfter |
Naṣīr al-Dīn al-Ṭūsī
NERFINISHED
ⓘ
city of Ṭūs via Naṣīr al-Dīn al-Ṭūsī NERFINISHED ⓘ |
| property |
preserves uniform angular velocity in component circles
ⓘ
produces exact linear motion from two circular motions ⓘ |
| tradition | Islamic astronomy ⓘ |
| usedFor |
eliminating the equant in Ptolemaic astronomy
ⓘ
generating linear motion from circular motions ⓘ modeling planetary latitude and longitude ⓘ refining Ptolemaic planetary models ⓘ |
| usedIn |
Maragha school of astronomy
NERFINISHED
ⓘ
non-Ptolemaic planetary models ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Subject: al-qirān al-Tūsī Description of subject: al-qirān al-Tūsī is a geometric device from medieval Islamic astronomy, devised by Nasir al-Din al-Tusi to generate linear motion from the sum of two circular motions and used to refine Ptolemaic planetary models.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.