sprinkler irrigation method
21Economy of ancient Tamil country — The economy of the ancient Tamil country (Sangam era: 200 BCE – 200 CE) describes the ancient economy of a region in southern India that covers the present day stateTamil Nadu. The main economic activities were agriculture, weaving, pearl fishery …
22Chainsaw — For other uses, see Chainsaw (disambiguation). An arborist using a chainsaw to fell a eucalyptus tree A chainsaw (or chain saw) is a portable mechanical saw, powered by electricity, compressed air, hydraulic power, or most common …
23Spud gun (cannon) — This article is about pipe based cannons and similar which use air pressure, or combustion of a gaseous fuel, or both, to launch large projectiles at low speed. They are in two types: * To fire whole potatoes. These launchers are built and fired… …
24Agriculture in ancient Tamil country — During the Sangam age, 200 BCE 200 CE, agriculture was the main vocation of the Tamils. [cite book last = Venkata Subramanian title = pages = p. 26] It was considered a necessity for life, and hence was treated as the foremost among all… …
25turbine — /terr bin, buyn/, n. any of various machines having a rotor, usually with vanes or blades, driven by the pressure, momentum, or reactive thrust of a moving fluid, as steam, water, hot gases, or air, either occurring in the form of free jets or as …
26Pencil — This article is about the handwriting instrument. For other uses, see Pencil (disambiguation). HB graphite pencils A pencil is a …
27Water supply — is the process of self provision or provision by third parties of water of various qualities to different users. Irrigation is covered separately. Global access to waterIn 2004 about 3.5 billion people worldwide (54% of the global population) had …
28Diamond blade — A close up of a diamond blade, showing worn metal behind the diamonds on the blade. A diamond blade is a saw blade which has diamonds fixed on the blade s base to use the diamonds to cut hard or abrasive materials. There are many types of diamond …
29Diamond tool — A close up of the segment of a diamond saw blade A diamond tool is a cutting tool with diamond grains fixed on the functional parts of the tool via a bonding material or another method.[1] As diamond is a superhard material, diamond tools have… …
30Vacuum cleaner — Cylinder vacuum cleaner for home use. French train vacuum cleaner …
