Search Results: Sphere

Ancient Greek astronomy was the study of the universe to understand how it functioned and why apart from the established theistic model that claimed all things were ordered and maintained by the gods. Ancient Greek astronomers relied on observation...

Archimedes (l. 287-212 BCE) was a Greek engineer and inventor who is regarded as the greatest mathematician of antiquity and one the greatest of all time. He is credited with a number of inventions still in use today (such as the Archimedes...

Claudius Ptolemy (c. 100 to c. 170 CE) was an Alexandrian mathematician, astronomer, and geographer. His works survived antiquity and the Middle Ages intact, and his theories, particularly on a geocentric model of the universe with planets...

Arsinoe II (l. c. 318/311 - c. 270/268 BCE), daughter of Ptolemy I became one of the most enduring figures of the Lagid or Ptolemaic Dynasty and left an undeniable mark in the historical evidence. She was married three times; first to Alexander...

Menelaus of Alexandria was a Greek astronomer, scientist, and mathematician who lived around 100 CE. Menelaus made a significant and lasting contribution to the fields of astronomy, geometry, and trigonometry. His major work, the Spherics...

Aristarchus of Samos (l. c. 310 - c. 230 BCE) was a Greek astronomer who first proposed a heliocentric model of the universe in which the sun, not the earth, was at the center. Although his theory was noted by other thinkers of his time...

The 1494 Treaty of Tordesillas (Tordesilhas) was an agreement between the monarchs of Spain and Portugal to divide the world between them into two spheres of influence. The imaginary dividing line ran down the centre of the Atlantic Ocean...

Religion (from the Latin Religio, meaning 'restraint,' or Relegere, according to Cicero, meaning 'to repeat, to read again,' or, most likely, Religionem, 'to show respect for what is sacred') is an organized system of beliefs and practices...

Orisha (also given as Orisa and Orishas) are supernatural entities usually referred to as deities in the Yoruba religion of West Africa, though they are actually emanations or avatars of the supreme being Olodumare. Their number is usually...

Oshun (pronounced O-shan, also given as Osun) is a supernatural entity recognized as both a spirit and a goddess in the Yoruba religion of West Africa. She presides over fertility, love, and freshwater, is the patroness of the Osun River...