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An anabatic wind, from the Greek anabatos, verbal of anabainein meaning "moving upward", is a warm wind which blows up a steep slope or mountain side, driven by heating of the slope through insolation. [1] [2] It is also known as upslope flow. These winds typically occur during the daytime in calm sunny weather.
In medieval and ancient philosophy, the Wheel of Fortune or Rota Fortunae is a symbol of the capricious nature of Fate. The wheel belongs to the goddess Fortuna ( Greek equivalent: Tyche ) who spins it at random, changing the positions of those on the wheel: some suffer great misfortune, others gain windfalls.
The wheel consisted of curved or tilted spokes partially filled with mercury. [1] Once in motion, the mercury would flow from one side of the spoke to another, thus forcing the wheel to continue motion, in constant dynamic equilibrium. Like all perpetual-motion machines, Bhaskara's wheel is a long-discredited mechanism.
Of the four chief Anemoi, Boreas (Aquilo in Roman mythology) is the north wind and bringer of cold winter air, Zephyrus (Favonius in Latin) [5] is the west wind and bringer of light spring and early-summer breezes, and Notus (Auster in Latin) is the south wind and bringer of the storms of late summer and autumn; Eurus, the southeast [6] (or ...
The Greek wind system was adopted by the Romans, partly under their Greek nomenclature, but increasingly also under new Latin names. Roman poet Virgil , in his Georgics (c. 29 BCE) refers to several of the winds by their old Greek names (e.g. Zephyrus, Eurus, Boreas), and introduces a few new Latin names – notably, "black Auster", "cold ...
The Roman Polyspaston crane, from Ancient Greek πολύσπαστον (polúspaston, “compound pulley”), when worked by four men at both sides of the winch, could lift 3000 kg. In case the winch was replaced by a treadwheel, the maximum load even doubled to 6000 kg at only half the crew, since the treadwheel possesses a much bigger ...
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