"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…

"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 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…

"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,…

"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…

A spiral of Archimedes.

Archimedes spiral

A spiral of Archimedes.