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| title | chunk | source | category | tags | date_saved | instance |
|---|---|---|---|---|---|---|
| History of technology | 5/10 | https://en.wikipedia.org/wiki/History_of_technology | reference | science, encyclopedia | 2026-05-05T04:00:28.072474+00:00 | kb-cron |
==== Hellenistic Mediterranean ==== The Hellenistic period of Mediterranean history began in the 4th century BC with Alexander's conquests, which led to the emergence of a Hellenistic civilization representing a synthesis of Greek and Near-Eastern cultures in the Eastern Mediterranean region, including the Balkans, Levant and Egypt. With Ptolemaic Egypt as its intellectual center and Greek as the lingua franca, the Hellenistic civilization included Greek, Egyptian, Jewish, Persian, and Phoenician scholars and engineers who wrote in Greek. Hellenistic engineers of the Eastern Mediterranean were responsible for several inventions and improvements to existing technology. The Hellenistic period saw a sharp increase in technological advancement, fostered by a climate of openness to new ideas, the blossoming of a mechanistic philosophy, and the establishment of the Library of Alexandria in Ptolemaic Egypt and its close association with the adjacent museion. In contrast to the typically anonymous inventors of earlier ages, ingenious minds such as Archimedes, Philo of Byzantium, Heron, Ctesibius, and Archytas remain known by name to posterity. Ancient agriculture, as in any period before the modern age the primary mode of production and subsistence, and its irrigation methods, were considerably advanced by the invention and widespread application of several previously unknown water-lifting devices, such as the vertical water-wheel, the compartmented wheel, the water turbine, Archimedes' screw, the bucket-chain and pot-garland, the force pump, the suction pump, the double-action piston pump and quite possibly the chain pump. In music, the water organ, invented by Ctesibius and subsequently improved, constituted the earliest instance of a keyboard instrument. In time-keeping, the introduction of the inflow clepsydra and its mechanization by the dial and pointer, the application of a feedback system, and the escapement mechanism far superseded the earlier outflow clepsydra. Innovations in mechanical technology included the newly devised right-angled gear, which would become particularly important to the operation of mechanical devices. Hellenistic engineers also devised automata such as suspended ink pots, automatic washstands, and doors, primarily as toys, which, however, featured new useful mechanisms such as the cam and gimbals. The Antikythera mechanism, a kind of analogous computer working with a differential gear, and the astrolabe both show great refinement in astronomical science. In other fields, ancient Greek innovations include the catapult and the gastraphetes crossbow in warfare, hollow bronze-casting in metallurgy, the dioptra for surveying, in infrastructure the lighthouse, central heating, a tunnel excavated from both ends by scientific calculations, and the ship trackway. In transport, great progress was made with the invention of the winch and the odometer. Further newly created techniques and items were spiral staircases, the chain drive, sliding calipers, and showers.
==== Roman Empire ====
The Roman Empire expanded from Italia across the entire Mediterranean region between the 1st century BC and 1st century AD. Its most advanced and economically productive provinces outside of Italia were the Eastern Roman provinces in the Balkans, Asia Minor, Egypt, and the Levant, with Roman Egypt in particular being the wealthiest Roman province outside of Italia. The Roman Empire developed an intensive and sophisticated agriculture, expanded upon existing iron working technology, created laws providing for individual ownership, advanced stone masonry technology, advanced road-building (exceeded only in the 19th century), military engineering, civil engineering, spinning and weaving and several different machines like the Gallic reaper that helped to increase productivity in many sectors of the Roman economy. Roman engineers were the first to build monumental arches, amphitheatres, aqueducts, public baths, true arch bridges, harbours, reservoirs and dams, vaults and domes on a very large scale across their Empire. Notable Roman inventions include the book (Codex), glass blowing, and concrete. Because Rome was located on a volcanic peninsula with sand containing suitable crystalline grains, the concrete the Romans formulated was especially durable. Some of their buildings have lasted 2000 years, to the present day. In Roman Egypt, the inventor Hero of Alexandria was the first to experiment with a wind-powered mechanical device (see Heron's windwheel) and even created the earliest steam-powered device (the aeolipile), opening up new possibilities in harnessing natural forces. He also devised a vending machine. However, his inventions were primarily toys, rather than practical machines.
==== Inca, Maya, and Aztec ====
The engineering skills of the Inca and Maya were great, even by today's standards. An example of this exceptional engineering is the use of pieces weighing upwards of one ton in their stonework, placed together so that not even a blade can fit into the cracks. Inca villages used irrigation canals and drainage systems, making agriculture very efficient. While some claim that the Incas were the first inventors of hydroponics, their agricultural technology was still soil-based, if advanced. Though the Maya civilization did not incorporate metallurgy or wheel technology into their architecture, they developed complex writing and astronomical systems and created beautiful sculptural works in stone and flint. Like the Inca, the Maya also had command of fairly advanced agricultural and construction technology. The Maya are also responsible for creating the first pressurized water system in Mesoamerica, located in the Maya site of Palenque. The main contribution of the Aztec rule was a system of communication between the conquered cities and the widespread use of the ingenious agricultural technology of chinampas. In Mesoamerica, without draft animals for transport (nor, as a result, wheeled vehicles), the roads were designed for travel on foot, just as in the Inca and Mayan civilizations. The Aztec, subsequently to the Maya, inherited many of the technologies and intellectual advancements of their predecessors: the Olmec (see Native American inventions and innovations).
=== Medieval to early modern === One of the most significant developments of the medieval period was the rise of economies in which water and wind power were more important than animal and human muscle power. Most water and wind power was used for milling grain. Water power was also used to blow air into blast furnace, to pulp rags for papermaking, and to felt wool. The Domesday Book recorded 5,624 water mills in Great Britain in 1086, being about one per thirty families.