paddle-wheel fan
11Timeline of Chinese history — History of China ANCIENT …
12Diffusion of technology in Canada — This article outlines the history of the diffusion or spread of technology in Canada. Technologies chosen for treatment here include, in rough order, transportation, communication, energy, materials, industry, public works, public services… …
13Flow measurement — is the quantification of bulk fluid movement. Flow can be measured in a variety of ways. Positive displacement flow meters acumulate a fixed volume of fluid and then count the number of times the volume is filled to measure flow. Other flow… …
14Watermill — This article is about a type of structure. For other locational uses see Milldam . For details of the technologies, see Water wheel and Mill machinery . A watermill is a structure that uses a water wheel or turbine to drive a mechanical process… …
15Crank (mechanism) — A crank is an arm attached at right angles to a rotating shaft by which reciprocating motion is imparted to or received from the shaft. It is used to change circular into reciprocating motion, or reciprocating into circular motion. The arm may be …
16Amphibious vehicle — An amphibious vehicle (or simply amphibian), is a vehicle or craft, that is a means of transport, viable on land as well as on water just like an amphibian.This definition applies equally to any land and water transport, small or large, powered… …
18Jandar — Jander or Jandar (as it is called by the locals in Murree) is a Hydro Mechanical floor mill that was commonly used in the mountain areas of the Murree Hills where water is abundant. Janders were very common during the barter economy era but now… …
19Dynastie Song/Traduction à faire — Modèle:Otheruses Sommaire 1 0 2 Histoire de la dynastie Song 2.1 Les Song du Nord 2.2 Les Song du Sud …
20List of United States inventions — 1700s1731 Sextant * The sextant is an astronomical instrument that is used to determine latitude for navigation. It does this by measuring angular distances, like the altitude of the sun, moon and stars. The sextant was invented independently in… …
