Definitions for equant
equant

WiktionaryRate this definition:0.0 / 0 votes

1. equantnoun

   The center of a planetary epicycle.

2. equantadjective

   Having comparable measurements in all directions; equidimensional.

WikipediaRate this definition:0.0 / 0 votes

1. Equant

   Equant (or punctum aequans) is a mathematical concept developed by Claudius Ptolemy in the 2nd century AD to account for the observed motion of the planets. The equant is used to explain the observed speed change in different stages of the planetary orbit. This planetary concept allowed Ptolemy to keep the theory of uniform circular motion alive by stating that the path of heavenly bodies was uniform around one point and circular around another point.

Webster DictionaryRate this definition:0.0 / 0 votes

1. Equantnoun

   a circle around whose circumference a planet or the center of ann epicycle was conceived to move uniformly; -- called also eccentric equator

2. Etymology: [L. aequans, -antis, p. pr. of aequare: cf. F. quant. See Equate.]

WikidataRate this definition:0.0 / 0 votes

1. Equant

   Equant is a mathematical concept developed by Claudius Ptolemy in the 2nd century AD to account for the observed motion of heavenly bodies. The equant point, indicated in the diagram by the large •, is placed so that it is directly opposite the Earth from the center of the deferent, indicated by the ×. A planet or the center of an epicycle was conceived to move with a uniform speed with respect to the equant. In other words, to a hypothetical observer placed at the equant point, the center of the epicycle would appear to move at a steady speed. However, the planet/center of epicycle will not move uniformly on its deferent. The angle α between the axis on which the equant and the Earth lie is a function of time t: where Ω is the constant angular speed seen from the equant which is situated at a distance E when the radius of the deferent is R. This concept solved the problem of accounting for the anomalistic motion of the planets but was believed by some to compromise the goals of the ancient astronomer, namely uniform circular motion. Noted critics of the equant include the Persian astronomer Nasir al-Din Tusi who developed the Tusi-couple as an alternative explanation, and Nicolaus Copernicus. Dislike of the equant was a major motivation for Copernicus to construct his heliocentric system.

How to pronounce equant?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say equant in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of equant in Chaldean Numerology is: 4

2. Pythagorean Numerology

   The numerical value of equant in Pythagorean Numerology is: 6

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References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Equant
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Equant
3. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/equant
4. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=equant