# REDIRECT Archimedes ' screw

Bryozoa are abundant in some regions ; the fenestellids including Fenestella, Polypora, and Archimedes, so named because it is in the shape of an Archimedean screw.

According to a recent hypothesis, the Archimedes screw may have been used by Sennacherib, King of Assyria, for the water systems at the Hanging Gardens of Babylon and Nineveh in the 7th century BC, although mainstream scholarship holds it to be a Greek invention of later times.

File: Archimedes naples statue. jpg | Archimedes ( c. 287 BC – c. 212 BC ): described buoyancy, developed formulae for the areas and volumes of spheres, cylinders, parabolas, worked extensively with levers, invented the Archimedes ' screw, developed siege engines for warfare to impede the Roman invasion of Syracuse.

The origin of the screw propeller starts with Archimedes, who used a screw to lift water for irrigation and bailing boats, so famously that it became known as Archimedes ' screw.

Trials with Smith's SS Archimedes, the first steam driven screw, led to the famous tug-of-war competition in 1845 between the screw-driven HMS Rattler and the paddle steamer HMS Alecto ; the former pulling the latter backward at 2. 5 knots ( 4. 6 km / h ).

The idea of a " simple machine " originated with the Greek philosopher Archimedes around the 3rd century BC, who studied the " Archimedean " simple machines: lever, pulley, and screw.

* Archimedes ' screw turbine

• Archimedes ' screw turbine

* Archimedes ' screw

* Water screw invented by Archimedes.

The idea of a " simple machine " originated with the Greek philosopher Archimedes around the 3rd century BC, who studied the " Archimedean " simple machines: lever, pulley, and screw.

The Archimedes ' screw, also called the Archimedean screw or screwpump, is a machine historically used for transferring water from a low-lying body of water into irrigation ditches.

The screw pump is commonly attributed to Archimedes on the occasion of his visit to Egypt, but this tradition may reflect only that the apparatus was unknown before Hellenistic times and introduced in his lifetime by unknown Greek engineers.

Archimedes ' screw consists of a screw ( a helical surface surrounding a central cylindrical shaft ) inside a hollow pipe.

* archimedean screw pump, how to build a functioning Archimedes screw pump from modern materials

Mentioned by Archimedes and by modern scientists as the first to propose a heliocentric " universe ", Aristarchus also proposed an ancient Greek time period,

It is primarily through Heath's translations that modern English-speaking readers are aware of what Archimedes did.

His translation of the celebrated Archimedes Palimpsest, however, was based on a transcription that had lacunae, which scholars such as Reviel Netz have been able to fill in to a certain extent, by exploiting modern scientific methods of imagery not available in Heath's time.

Archimedes could also find the volume of the cone using the mechanical method, since, in modern terms, the integral involved is exactly the same as the one for area of the parabola.

Archimedes then computed that the diameter of the Universe was no more than 10 < sup > 14 </ sup > stadia ( in modern units, about 2 light years ), and that it would require no more than 10 < sup > 63 </ sup > grains of sand to fill it.

It was first used geometrically by the mathematicians Archimedes and Eudoxus in an effort to compute π, and was formulated in modern terms by Gauss.

Archimedes of Syracuse developed this method further, while also inventing heuristic methods which resemble modern day concepts somewhat.

On the integral side, Cavalieri developed his method of indivisibles in the 1630s and 40s, providing a more modern form of the ancient Greek method of exhaustion, and computing Cavalieri's quadrature formula, the area under the curves x < sup > n </ sup > of higher degree, which had previously only been computed for the parabola, by Archimedes.

Ancient agriculture, as in any period prior to the modern age the primary mode of production and subsistence, and its irrigation methods were considerably advanced by the invention and widespread application of a number of 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 .< ref name =" Lewis 2000 356f.

Archimedes was able to use infinitesimals in a way that is similar to modern integral calculus.

* Desperate Measures ( previously Desperate Measures: Length, Area and Volume, ISBN 0-439-01370-4 ( measuring lines: units and accuracy, old measuring systems, the development of metric, the SI system and powers of ten, shapes, measuring areas and area formulas, weight, angles, measuring volume, Archimedes Principle, density, time and how the modern calendar developed.

Modern experiments have tested claims that Archimedes designed machines capable of lifting attacking ships out of the water and setting ships on fire using an array of mirrors.

A variant of the Archimedes ' screw can also be found in some injection molding machines, die casting machines and extrusion of plastics, which employ a screw of decreasing pitch to compress and melt the material.

Zool was also ported to the Atari ST, Game Boy, Sega Mega Drive, SNES, Master System, Sega Game Gear, Amiga CD32, PC, Acorn Archimedes, and RISC OS platform, as well as for the arcade machines.

The siege lasted for two long years, with the Roman effort being thwarted in part by the military machines created by the famous inventor Archimedes.

According to the project Application Manager during the project, Acorn was developing for it, Compiler for Acorn Modula-2 Extended Language ( CAMEL in Modula-2 +) bootstrapping from an Acorn Extended Modula-2 ( AEM2 ) compiler ( ported from Modula-2 ETH using Econet hardware ), though never released externally, it was ported to use it in SUN Unix machines, in an effort to port Sun's workstations Sun NeWS to the Archimedes, and after Olivetti bought out Acorn, developed a compiler based on CAMEL for the Modula-3 programming Language.

RISC iX is not compatible with later Archimedes machines.

Historians such as Polybius and Livy attributed heavy Roman losses to these machines, together with catapults also devised by Archimedes.

Jinxter is a text adventure computer game developed by British developer Magnetic Scrolls and published by Rainbird in 1987 for popular 8-bit and 16-bit machines of the time as well as the 32-bit Acorn Archimedes.

Acorn operating systems for the Atom, BBC Micro, Archimedes and later RISC OS machines use the vertical bar character < tt >|</ tt > in place of the caret.

Archimedes invented several machines.

war: Tornilyo ni Archimedes

* After a two years ' siege, Roman general, Marcus Claudius Marcellus, gradually forces his way into Syracuse and takes it in the face of strong Carthaginian reinforcements and despite the use of engines of war designed by the Greek mathematician and scientist Archimedes ( such as the Claw of Archimedes ).

Germain decided that if geometry, which at that time referred to all of pure mathematics, could hold such fascination for Archimedes, it was a subject worthy of study.

This approach dates back to Archimedes.

This formula is the same as Heron ’ s formula, proved by Heron of Alexandria about 60 BCE, though knowledge of the formula may go back to Archimedes.

The study of fluid mechanics goes back at least to the days of ancient Greece, when Archimedes investigated fluid statics and buoyancy and formulated his famous law known now as the Archimedes ' principle, which was published in his work On Floating Bodies-generally considered to be the first major work on fluid mechanics.