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The device, housed in the remains of a wooden-framed case of (uncertain) overall size 34 cm × 18 cm × 9 cm (13.4 in × 7.1 in × 3.5 in), [15] [16] was found as one lump, later separated into three main fragments which are now divided into 82 separate fragments after conservation efforts. Four of these fragments contain gears, while ...
The date used as the end of the ancient era is arbitrary. The transition period from Classical Antiquity to the Early Middle Ages is known as Late Antiquity.Late Antiquity is a periodization used by historians to describe the transitional centuries from Classical Antiquity to the Middle Ages, in both mainland Europe and the Mediterranean world: generally from the end of the Roman Empire's ...
List of years; Timelines of world history; List of timelines; Chronology; See calendar and list of calendars for other groupings of years.; See history, history by period, and periodization for different organizations of historical events.
These timelines of world history detail recorded events since the creation of writing roughly 5000 years ago to the present day.. For events from c. 3200 BC – c. 500 see: Timeline of ancient history
1 king – most important piece, and one of the weakest (until the endgame). The object of the game is checkmate, by placing the enemy king in check in a way that it cannot escape capture in the next move. On the top of the piece is a cross. 1 queen – most powerful piece in the game, with a relative value of 9 points. The top of the piece is ...
An image from John Dalton's A New System of Chemical Philosophy, the first modern explanation of atomic theory.. This timeline of chemistry lists important works, discoveries, ideas, inventions, and experiments that significantly changed humanity's understanding of the modern science known as chemistry, defined as the scientific study of the composition of matter and of its interactions.
The timeline of historic inventions is a chronological list of ... cooking, by Homo habilis [3] [4] [5] 1.76 ... China date to the 3rd and 2nd centuries ...
Once the schematic has been made, it is converted into a layout that can be fabricated onto a printed circuit board (PCB). Schematic-driven layout starts with the process of schematic capture. The result is what is known as a rat's nest. The rat's nest is a jumble of wires (lines) criss-crossing each other to their destination nodes.