Information about Winnowing
)
Chinese rotary fan winnowing machine, from the Tiangong Kaiwu encyclopedia published in 1637 by Song Yingxing.
In its simplest form it involves throwing the mixture into the air so that the wind blows away the lighter chaff, while the heavier grains fall back down for recovery. Techniques included using a winnowing fan (a shaped basket shaken to raise the chaff) or using a tool (a winnowing fork or shovel) on a pile of harvested grain.
In Ancient China the method was improved by mechanisation with the development of the rotary winnowing fan, which used a cranked fan to produce the airstream.[1] This was featured in Wang Zhen's book the Nong Shu of 1313 AD. This technique was not adopted in Europe until the 1700s, when winnowing machines used a 'sail fan'.[2]
The development of the winnowing barn allowed South Carolina rice plantations to increase their yields dramatically.
See also
References
1. ^ The Question of the Transmission of the Rotary Winnowing Fan from China to Europe: Some New Findings, Hans Ulrich Vogel, 8th International Conference on the History of Science in China
2. ^ Broadcasting and winnowing, Antique Farm Tools
2. ^ Broadcasting and winnowing, Antique Farm Tools
Agriculture (from Agri Latin for ager ("a field"), and culture, from the Latin cultura "cultivation" in the strict sense of "tillage of the soil". A literal reading of the English word yields "tillage of the soil of a field".
..... Click the link for more information.
..... Click the link for more information.
Cereal crops or grains are mostly grasses cultivated for their edible grains or seeds (i.e., botanically a type of fruit called a caryopsis). Cereal grains are grown in greater quantities and provide more energy worldwide than any other type of crop; they are therefore
..... Click the link for more information.
..... Click the link for more information.
Chaff (pronounced to rhyme with "half") is a term from agriculture used for the bracts and casings that are not edible and are harvested with the cereal grain. These casings include hulls or husks and part of the pericarp.
..... Click the link for more information.
..... Click the link for more information.
Curculionoidea
Latreille, 1802
Families
Anthribidae — fungus weevils
Attelabidae — leaf rolling weevils
Belidae — primitive weevils
Brentidae — straight snout weevils
Caridae
Curculionidae — true weevils
..... Click the link for more information.
Latreille, 1802
Families
Anthribidae — fungus weevils
Attelabidae — leaf rolling weevils
Belidae — primitive weevils
Brentidae — straight snout weevils
Caridae
Curculionidae — true weevils
..... Click the link for more information.
Wang Zhen (Traditional Chinese: 王禎; Simplified Chinese: 王祯; Hanyu Pinyin: Wáng Zhēn; Wade-Giles: Wang Chen, fl.
..... Click the link for more information.
..... Click the link for more information.
Winnowing barns (or winnowing houses) were commonly found in South Carolina on antebellum rice plantations. A winnowing barn consists of a large shed on tall posts with a hole in the floor.
..... Click the link for more information.
..... Click the link for more information.
The Winnowing Oar (athereloigon) is an object that appears in Books XI and XXIII of Homer's Odyssey. [1] In the epic, Odysseus is instructed by Tiresias to take an oar from his ship and to walk inland until he finds a "land that knows nothing of the sea", where the oar
..... Click the link for more information.
..... Click the link for more information.
Chaffing and winnowing is a cryptographic technique to achieve confidentiality without using encryption when sending data over an insecure channel; it was conceived by Ron Rivest.
..... Click the link for more information.
..... Click the link for more information.
This article is copied from an article on Wikipedia.org - the free encyclopedia created and edited by online user community. The text was not checked or edited by anyone on our staff. Although the vast majority of the wikipedia encyclopedia articles provide accurate and timely information please do not assume the accuracy of any particular article. This article is distributed under the terms of GNU Free Documentation License.
Herod_Archelaus
