equant
101Spherical Earth — Medieval artistic representation of a spherical Earth with compartments representing earth, air, and water (c. 1400). The concept of a spherical Earth dates back to ancient Greek philosophy from around the 6th century BC …
102Timocharis — of Alexandria (ca. 320 BC – 260 BC) was a Greek astronomer and philosopher. Likely born in Alexandria, he was a contemporary of Euclid.[citation needed] What little is known about Timocharis comes from citations by Ptolemy in the Almagest. These… …
103Heliocentrism — Heliocentric redirects here. For the albums, see Heliocentric (Paul Weller album) and Heliocentric (The Ocean Collective album). Heliocentric Universe …
104Apollonius of Perga — Apollonius of Perga. Apollonius of Perga [Pergaeus] (Ancient Greek: Ἀπολλώνιος) (ca. 262 BC – ca. 190 BC) was a Greek geometer and astronomer noted for his writings on conic sections. His innovative methodology and terminology, especially in the… …
105List of companies of the Netherlands — This is a list of companies from the Netherlands. See for lists of companies from other countries.Independent companies*AEGON *Ahold *Akzo Nobel *Amstel *ASML Holding *Australian Homemade *Basell Polyolefins *Bavaria *Bip Candy *CNH Global *DAF… …
106Abd al-Rahman al-Sufi — Azophi redirects here. For the lunar crater, see Azophi (crater). Abd al Rahman al Sufi (Persian: عبدالرحمن صوفی) (December 7, 903 – May 25, 986) was a Persian astronomer also known as Abd ar Rahman as Sufi, or Abd al Rahman Abu al Husayn, Abdul… …
107Anorthosite — (pronEng|æˈnɔrθəsaɪt/, /ə ) is a phaneritic, intrusive igneous rock characterized by a predominance of plagioclase feldspar (90–100%), and a minimal mafic component (0–10%). Pyroxene, ilmenite, magnetite, and olivine are the mafic minerals most… …
108Nicolaus Copernicus — Copernicus redirects here. For other uses, see Copernicus (disambiguation). Nicolaus Copernicus …
109Al-Andalus — This article is about the historical region. For the modern day region, see Andalusia. For the district in Kuwait, see Kuwait City. For the musical group, see Andalus. History of Al Andalus 711–1492 711–732 Musl …
110Abū Ishāq Ibrāhīm al-Zarqālī — Arzachel redirects here. For other uses, see Arzachel (disambiguation). Abū Isḥāq Ibrāhīm ibn Yaḥyā al Naqqāsh al Zarqālī, Al Zarqali, Ibn Zarqala (1029–1087), Latinized as Arzachel, was an instrument maker and one of the leading theoretical and… …
