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A machine used for lifting water, thought to have been invented by Archimedes in egypt for draining and irrigating land.

Archimedes' Screw

A machine used for lifting water, thought to have been invented by Archimedes in egypt for draining…

"A device for raising water, said to have been invented by Archimedes."-Whitney, 1902

Archimedean Screw

"A device for raising water, said to have been invented by Archimedes."-Whitney, 1902

Nicholson's Hydrometer, consists of a hollow cylinder of metal with conical ends, terminated above by a very thin rod bearing a small dish, and carrying at its lower end a kind of basket. This latter is of such weight that when the instrument is immersed in water a weight of 100 grammes must be placed in the dish above in order to sink the apparatus as far as a certain mark on the rod. By the principle of Archimedes, the weight of the instrument, together with the 100 grammes which it carries, is equal to the weight of the water displaced. Now, let the instrument be placed in another liquid, and the weights in the dish above be altered until they are just sufficient to make the instrument be placed in another liquid, and the weights in the dish above be altered until they are just sufficient to make the instrument sink to the mark on the rod.

Hydrometer

Nicholson's Hydrometer, consists of a hollow cylinder of metal with conical ends, terminated above by…

Nicholson's Hydrometer, consists of a hollow cylinder of metal with conical ends, terminated above by a very thin rod bearing a small dish, and carrying at its lower end a kind of basket. This latter is of such weight that when the instrument is immersed in water a weight of 100 grammes must be placed in the dish above in order to sink the apparatus as far as a certain mark on the rod. By the principle of Archimedes, the weight of the instrument, together with the 100 grammes which it carries, is equal to the weight of the water displaced. Now, let the instrument be placed in another liquid, and the weights in the dish above be altered until they are just sufficient to make the instrument be placed in another liquid, and the weights in the dish above be altered until they are just sufficient to make the instrument sink to the mark on the rod.

Hydrometer

Nicholson's Hydrometer, consists of a hollow cylinder of metal with conical ends, terminated above by…

"States that: A body when immersed in a fluid loses exactly as much of its weight as is equal to the weight of the dluid it displaces; or: A fluid sustains as mch of the weight of a body immersed in it as is equal to the weight of the fluid displaced by it." — Chambers' Encyclopedia, 1875

Archimedes Principle

"States that: A body when immersed in a fluid loses exactly as much of its weight as is equal to the…

"A machine for raising water, said to have been invented by Archimedes, during his stay in Egypt for draining and irrigating the land." — Chambers' Encyclopedia, 1875

Archimedes Screw

"A machine for raising water, said to have been invented by Archimedes, during his stay in Egypt for…

A spiral of Archimedes.

Archimedes spiral

A spiral of Archimedes.

"It consists of a tube, made of lead, or strong leather, coiled round a cylinder of wood or iron, as represented..." -Comstock 1850

Archimedes' Water Screw

"It consists of a tube, made of lead, or strong leather, coiled round a cylinder of wood or iron, as…

"From on pan suspend a hollow cylinder of metal t, and below that a solid cylinder a of the same size as the hollow part of the upper cylinder. Put two weights in the other scale pan until they sxactly balance the two cylinders. If a be immersed in water, te scale pan containing the weights will descend, showing that a has lost some of its weight. Now fill t with water, and the volume of water that can be poured into t will equal that displaced by a. The scale pan that contains the weights will gradually rise until t is filled, when the scales will balance again." —Hallock 1905

Archimedes Principle

"From on pan suspend a hollow cylinder of metal t, and below that a solid cylinder a of the same size…

"Invented to raise water. A hollow tube wound spirally around a solid cylinder. As the cylinder is turned, water is fed up through the hollow tube and discharged at the top of the tube." —Quackenbos 1859

Archimedes' Screw

"Invented to raise water. A hollow tube wound spirally around a solid cylinder. As the cylinder is turned,…

An ancient mollusk from the Carboniferous Age, the Archimedes reversa.

Archimedes Mollusk

An ancient mollusk from the Carboniferous Age, the Archimedes reversa.

Device for transferring water up from a lower body.

Archimedean Screw

Device for transferring water up from a lower body.

An experimental verification of the Principle of Archimedes.

Experimental Verification of Principle of Archimedes

An experimental verification of the Principle of Archimedes.

An auger is a device for moving material or liquid (see Archimedes' screw) by means of a rotating helical flighting. The material is moved along the axis of rotation. For some uses the helical 'flighting' is enclosed in a tube, for other uses the flighting is not encased. An integral part of a drill, the auger of the drill bit, uses this mechanism to remove shavings from the hole being drilled.

Auger

An auger is a device for moving material or liquid (see Archimedes' screw) by means of a rotating helical…

"Divide the circumference into a number of equal parts, drawing the radii and numbering the points. Divide the radius No. 1 into the same number of equal parts, numbering from the center. With C as center draw concentric arcs intersecting the radii of corresponding numbers, and draw a smooth curve through these intersections." —French, 1911

Draw Spiral of Archimedes

"Divide the circumference into a number of equal parts, drawing the radii and numbering the points.…

The first reference to an elevator is in the works of the Roman architect Vitruvius, who reported that Archimedes built his first elevator, probably in 236 BC. In some literary sources of later historical periods, elevators were mentioned as cabs on a hemp rope and powered by hand or by animals. It is supposed that elevators of this type were installed in the Sinai monastery of Egypt.

Elevating Apparatus

The first reference to an elevator is in the works of the Roman architect Vitruvius, who reported that…

An illustration of Archimedes Principle. "If a body is immersed in a fluid, it will lose in weight an amount equal to the weight of the fluid it displaces.

Archimedes Principle

An illustration of Archimedes Principle. "If a body is immersed in a fluid, it will lose in weight an…

The solid displaces its bulk of water.

Displacement

The solid displaces its bulk of water.

Also called a parabolic spiral, it is a type of Archimedean Spiral. A spiral is defined as "a plane curve which runs continuously round and round, a fixed point, called the center, with constantly increasing radius vector, so that the latter is never normal to the curve; also, a part of such a curve in the course of which the radius from the center describes 360 degrees." —Whitney, 1889

Fermat's Spiral

Also called a parabolic spiral, it is a type of Archimedean Spiral. A spiral is defined as "a plane…

Illustration of a spiral named after the 3rd century BC Greek mathematician Archimedes.

Archimedean Spiral

Illustration of a spiral named after the 3rd century BC Greek mathematician Archimedes.

Illustration of a hyperbolic spiral, also called a reciprocal spiral, it is a transcendental plane curve. It is a type of Cotes' spiral and is the exact opposite of an Archimedean spiral.

Hyperbolic Spiral

Illustration of a hyperbolic spiral, also called a reciprocal spiral, it is a transcendental plane curve.…