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• Portolan chart (category Articles with Spanish-language sources (es))
  Nautical charts, first made in the 13th century Portolan charts are nautical charts, first made in the 13th century in the Mediterranean basin and later
  19 KB (2,371 words) - 20:02, 8 February 2024
• Julian calendar
  to the 13th century scholar Sacrobosco, but also attested in 12th century works. The model is explicitly contradicted by the 3rd and 5th century authors
  78 KB (10,007 words) - 20:45, 6 February 2024
• Age of Discovery (section Northern European involvement (1595–17th century))
  by the 11th century. It was adopted by the Arab traders in the Indian Ocean. The compass spread to Europe by the late 12th or early 13th century. Use of
  200 KB (24,364 words) - 14:17, 14 February 2024
• Hindu–Arabic numeral system
  up in Islamic mathematics in the 8th century, as recorded in al-Qifti's Chronology of the scholars (early 13th century). The numeral system came to be known
  24 KB (2,366 words) - 21:22, 6 February 2024
• Old Style and New Style dates
  from as early as the 13th century, despite the recorded (civil) year not incrementing until 25 March, but the "year starting 25th March was called the
  30 KB (3,817 words) - 21:19, 6 February 2024
• World-systems theory
  the 16th century, Europe was dominated by feudal economies. European economies grew from mid-12th to 14th century but from 14th to mid 15th century, they
  72 KB (8,586 words) - 22:33, 6 February 2024
• Gregorian calendar
  Russia and Greece did so (for their civil calendars) in the 20th century, the jump was 13 days. For other countries and territories, see List of adoption
  72 KB (8,589 words) - 23:47, 6 February 2024
• Scientist (section 19th century)
  term in the late 19th century in the United States and around the turn of the 20th century in Great Britain. By the twentieth century, the modern notion
  46 KB (3,700 words) - 22:36, 8 February 2024
• History of algebra
  al-Banna (13th-14th centuries) and al-Qalasadi (15th century), although fully symbolic algebra was developed by François Viète (16th century). Later, René
  120 KB (16,525 words) - 20:19, 8 February 2024
• Mathematics and art
  fortifications in the 18th century), were used continuously and ubiquitously by Chinese artists from the first or second centuries until the 18th century. The Chinese
  114 KB (12,523 words) - 23:23, 8 February 2024
• Black (section 12th and 13th centuries)
  drawing ink in Europe, from about the 12th century to the 19th century, and remained in use well into the 20th century. Sticks of vine charcoal and compressed
  98 KB (12,421 words) - 04:04, 16 March 2024
• Vitalism (section 19th century)
  twentieth-century biologists with vitalist leanings (A. Hardy, S. Wright, A. Portmann) are no longer alive."  Schultz, S.G. (1998). "A century of (epithelial)
  39 KB (4,742 words) - 07:57, 27 June 2023
• Legal history
  history. Twentieth-century historians viewed legal history in a more contextualised manner – more in line with the thinking of social historians. They have looked
  26 KB (3,184 words) - 15:18, 6 February 2024
• Byzantine calendar
  being finalized in the mid-7th century, although its precursors were developed c. AD 412. By the second half of the 7th century, the Creation Era was known
  65 KB (8,578 words) - 05:19, 9 March 2024
• Arabic numerals
  Al-Andalus from the 10th century onward. Some amount of consistency in the Western Arabic numeral forms endured from the 10th century, found in a Latin manuscript
  30 KB (2,751 words) - 15:09, 6 February 2024
• Biography:Rodrigo Jiménez de Rada (category 13th-century Spanish historians)
  historiographic work. His De rebus Hispaniae, a general history of Spain, was very soon translated into Spanish and was very influential on the General History of Alfonso
  7 KB (748 words) - 02:55, 19 February 2024
• Timeline
  (kingdoms) on the top the dominant visual structure of time. By the 17th century, historians had started to claim that chronology and geography were the two
  14 KB (1,571 words) - 18:21, 6 February 2024
• Foot (unit) (category Articles containing Spanish-language text)
  Abbey shows that during the 9th century the Roman foot of 296.1 mm (11.66 in) was used; when it was rebuilt in the 10th century, a foot of about 320 mm (12
  49 KB (4,546 words) - 20:48, 6 February 2024
• Euclid's Elements
  dihedral angles of faces that meet at an edge. 4th century, Theon of Alexandria, 888 AD manuscript extant. 9th century, Pre-Theon Peyrard Vat. gr. 190 Many medieval
  48 KB (5,517 words) - 18:19, 6 February 2024
• Natural science (section 19th-century developments (1800–1900))
  microbiology was introduced in the 17th century with the invention of the microscope. However, it was not until the 19th century that biology became a unified
  55 KB (6,177 words) - 18:50, 8 February 2024

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