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...e connecting the [[apsis|apsides]] (line of apsides) of an [[orbiting body|astronomical body]]'s [[orbit]]. The apsides are the orbital points farthest (apoapsis) ....| journal=Nature| volume=444 Supplement| title=Decoding the ancient Greek astronomical calculator known as the Antikythera Mechanism| bibcode=2006Natur.444..587F| ...

{{Short description|Ancient Indian alphasyllabic numeral system}} ...Malayalam: [[:ml:പരല്‍പ്പേര്|പരല്‍പ്പേര്]]) of numerical notation is an [[ancient]] [[India]]n [[alphasyllabic numeral system]] to depict [[letter (alphabet) ...

...during the 3rd century BC from applications of [[geometry]] to [[Astronomy|astronomical studies]].<ref>R. Nagel (ed.), ''Encyclopedia of Science'', 2nd Ed., The Ga ...her or mother of a field|father]] of trigonometry".{{sfnp|Boyer|1991 |loc="Greek Trigonometry and Mensuration" |p=[https://archive.org/details/historyofmath ...

| works = ''[[Tajrid al-I'tiqad]]'', ''[[Zij-i ilkhani]]'', ''Rawḍa-yi ...entists and artists, accumulated a library of 400000 volumes, and built an astronomical ...}} ...

...e lunar cycle used by the Church to calculate the date for Easter, because astronomical new moons were occurring four days before the calculated dates. Whilst the ...page= 863|publisher=Springer |isbn=9783540688310 }}</ref> The increase of astronomical knowledge and the precision of observations towards the end of the 15th cen ...

...=March 15, 2015}}</ref><ref>{{cite web|url=http://www.math.buffalo.edu/mad/Ancient-Africa/ishango.html|title=an old Mathematical Object|publisher=|accessdate= ...first [[Babylonian cuneiform numerals|numeral system]], and a system of [[Ancient Mesopotamian units of measurement|weights and measures]]. ...

== Ancient == *[[Parmenides]] (530&nbsp;BC–460&nbsp;BC), İtalian-Greek philosopher, defender of rationalism in philosophy ...

...ithmetic]], one of the oldest branches of mathematics. A mathematician who works in the field of geometry is called a ''[[List of geometers|geometer]]''. Un ...aad8085 |pmid=26823423 |s2cid=206644971}}</ref> South of Egypt the [[Nubia|ancient Nubians]] established a system of geometry including early versions of sun ...

== Ancient Egypt == ...l is being spent. This practice has existed in some form for centuries; in ancient [[Egypt]], for example, when grain was often used as currency, local granar ...

...averaging more than 250&nbsp;times that of the Earth i.e. over 250&nbsp;[[astronomical unit]]s (AU). These ETNOs tend to make their closest approaches to the Sun ...to ten times that of the Earth, and an [[elongated orbit]] 400–800&nbsp;[[astronomical unit|AU]]. The orbit estimation was refined in 2021, resulting in a somewha ...

...it the scientific name '''Pithecanthropus erectus''', a name derived from Greek and Latin roots meaning ''upright ape-man''. ...sky]], first defined in the late 16th century. Its name means "no feet" in Greek, and it represents a [[bird-of-paradise]] (once believed to lack feet). It ...

A fleeting hint of an ancient decimal or metric system may be found in the [[Mohenjo-Daro#Ruler|Mohenjo-D | work = Antoine-Laurent de Lavoisier (1743–1794 – Life and Works ...

...ht|solar radiation]] out of the total [[solar radiation]] received by an [[astronomical body]] (e.g. a [[planet]] like [[Earth]]). It is [[dimensionless number|dim ...=www.spacedictionary.com |language=en}}</ref> The term is derived from the Greek word ''anemos'', which means [[wind]], and is used to describe any wind spe ...

...of the world [played] a greater role in the evolution of firearms than the ancient Italian valley region known as ''Val Trompia''}}</ref><ref name=":13">{{Cit .../hsc/museum/ancient_inventions/candles2.html|title=Smith College Museum of Ancient Inventions: Candles|website=www.smith.edu|access-date=2019-11-05}}</ref> ...

...[volume]]. The symbol most often used for density is ''ρ'' (the lower case Greek letter [[rho]]), although the Latin letter ''D'' can also be used. Mathemat ...hinking from [[chemistry]], [[physics]], and [[engineering]] to understand ancient, [[Empirical relationship|phenomenological]] observations in [[metallurgy]] ...