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A polarimeter [1] is a scientific instrument used to measure optical rotation: the angle of rotation caused by passing linearly polarized light through an optically active substance. [ 2 ] Some chemical substances are optically active, and linearly polarized (uni-directional) light will rotate either to the left (counter-clockwise) or right ...
Originally, many thước of varying lengths were in use in Vietnam, each used for different purposes. According to Hoàng Phê (1988), [1] the traditional system of units had at least two thước of different lengths before 1890, [2] the thước ta (lit. "our ruler") or thước mộc ("wooden ruler"), equal to 0.425 metres (1 ft 4.7 in), and the thước đo vải ("ruler for measuring ...
A simple polarimeter to measure this rotation consists of a long tube with flat glass ends, into which the sample is placed. At each end of the tube is a Nicol prism or other polarizer. Light is shone through the tube, and the prism at the other end, attached to an eye-piece, is rotated to arrive at the region of complete brightness or that of ...
Dau Tieng helipads, 23 September 1967 Air controllers of the 2nd Battalion, 28th Infantry calling in aircraft to lift troops for redeployment, 18 February 1970. The base was established in October 1966.
Từ điển bách khoa Việt Nam (lit: Encyclopaedic Dictionary of Vietnam) is a state-sponsored Vietnamese-language encyclopedia that was first published in 1995. It has four volumes consisting of 40,000 entries, the final of which was published in 2005. [1] The encyclopedia was republished in 2011.
An experimental Wikipedia edition in the obsolete chữ Nôm script began in October 2006 at the Wikimedia Incubator. [6] It was deleted in April 2010. [7] [non-primary source needed] The Vietnam Wikimedians User Group supports the development of the Vietnamese Wikipedia and other Vietnamese-language Wikimedia projects.
A model attribution edit summary is Content in this edit is translated from the existing Vietnamese Wikipedia article at [[:vi:Dầu Tiếng (thị trấn)]]; see its history for attribution. You may also add the template {{Translated|vi|Dầu Tiếng (thị trấn)}} to the talk page. For more guidance, see Wikipedia:Translation
The Michelin Rubber Plantation was a rubber plantation in Vietnam.It was located near Dầu Tiếng District in Bình Dương Province, 72 km northwest of Saigon.The plantation was established by the Michelin company in 1925 [1] and at 12,400 hectares (31,000 acres) it was the largest rubber plantation in Vietnam.