Augusta Raurica, or Colonia Augusta Rauracorum, was founded by Lucius Munatius Plancus around 44 BC in the vicinity of a local Gallic tribe, the Rauraci, relatives of the Helvetii. No archaeological e ...
A Roman iron crankshaft of yet unknown purpose dating to the 2nd century AD was excavated in Augusta Raurica, Switzerland. The 82.5 cm long piece has fitted to one end a 15 cm long bronze handle, the ...
Tectonic earthquakes occur anywhere in the earth where there is sufficient stored elastic strain energy to drive fracture propagation along a fault plane. The sides of a fault move past each other smo ...
The inverted pendulum is a classic problem in dynamics and control theory and is widely used as a benchmark for testing control algorithms (PID controllers, state space representation, neural networks ...
Because the acceleration of gravity is constant at a given point on Earth, the period of a simple pendulum at a given location depends only on its length. Additionally, gravity varies only slightly at ...
Main article: Pendulum (mathematics)The period of swing of a simple gravity pendulum depends on its length, the local strength of gravity, and to a small extent on the maximum angle that the pendulum ...
Zhang Heng is the first person known to have applied hydraulic motive power (i.e. by employing a waterwheel and clepsydra) to rotate an armillary sphere, an astronomical instrument representing the ce ...
Born in the town of Xi'e in Nanyang Commandery (north of the modern Nanyang City in Henan province), Zhang Heng came from a distinguished but not very affluent family. His grandfather Zhang Kan had be ...
A simple seismometer that is sensitive to up-down motions of the earth can be understood by visualizing a weight hanging on a spring. The spring and weight are suspended from a frame that moves along ...
A buttress dam or hollow dam is a dam with a solid, water-tight upstream side that is supported at intervals on the downstream side by a series of buttresses or supports. The dam wall may be straight ...
The watermill is the earliest instance of a machine harnessing natural forces to replace human muscular labour (apart from the sail). As such it holds a special place in the history of technology and ...
The term Mediterranean derives from the Latin word mediterraneus, meaning "in the middle of earth" or "between lands" (medi-; adj. medius, -um -a "middle, between" + terra f., "land, earth"): as it is ...
Some fields that were encompassed in the area of water resources (mainly for urban use), would included groundwater exploitation, construction of aqueducts for water supply, storm water and wastewater ...
Main article: WatermillSee also: List of ancient watermills and List of early medieval watermillsThe old water mill at Decew Falls, Niagara Escarpment, St.Catharines, CanadaThe Greek geographer Strabo ...
OED gives the translation "star-taker" for the English word "astrolabe" and traces it, through medieval Latin, to the Greek word astrolabos from astron "star" and lambanein "to take". In the medieval ...
