"(Unknown)" returned 16 hits

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1
Author: Unknown
The Antikythera Mechanism is a unique Greek geared device, constructed around the end of the second century bc. It is known that it calculated and displayed celestial information, particularly cycles such as the phases of the moon and a luni-solar calendar.
Mediaitems: Antikythera, Antikythera mechanism, Antikythera front view
Category: Technology
2
Author: Unknown
Invention of parchment. Parchment was superior to papyrus because it could be printed on both sides and folded.
Mediaitems: History of parchment, History of parchment in Wikipedia
Category: Technology
3
Author: Unknown
The first route map ("carte routière''), showing the whole of the Roman world, a map from Vienna, through Italy, to Carthage; painted on parchment, 34 cm. high, by 7 m. in length. (Named the table of Peutinger, after a 16th century German collector.)
Mediaitems: Peutinger map, Peutinger map images, Peutinger map background
Category: Cartography
4
Author: Unknown
Earliest known attempt to show changing values graphically (positions of the sun, moon, and planets throughout the year)
Mediaitems: Planetary movements diagram, Planetary movements icon
Category: Statistics & Graphics
5
Author: Unknown
Tables of empirical data, published tables of numbers begin to appear. "Die Tabellen-Statistik,'' as a branch of statistics devoted to the numerical description of facts