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Buoyancy also applies to fluid mixtures, and is the most common driving force of convection currents. In these cases, the mathematical modelling is altered to apply to continua, but the principles remain the same. Examples of buoyancy driven flows include the spontaneous separation of air and water or oil and water.
In atmospheric dynamics, oceanography, asteroseismology and geophysics, the Brunt–Väisälä frequency, or buoyancy frequency, is a measure of the stability of a fluid to vertical displacements such as those caused by convection. More precisely it is the frequency at which a vertically displaced parcel will oscillate within a statically ...
Tiếng Việt; 中文; Edit links ... Pages in category "Buoyancy" The following 28 pages are in this category, out of 28 total. This list may not reflect recent ...
A buoyancy engine is a device that alters the buoyancy of a vehicle or object in order to either move it vertically, as in the case of underwater profiling floats and stealth buoys, or provide forward motion (therefore providing variable-buoyancy propulsion) such as with underwater gliders and some autonomous aircraft.
Map from the Đại Nam nhất thống chí. The Đại Nam nhất thống chí (chữ Hán: 大南一統志, 1882) is the official geographical record of Vietnam's Nguyễn dynasty written in chữ Hán compiled in the late nineteenth century. [1] It also contains historical records of military campaigns. [2] [3]
The Vietnamese Wikipedia (Vietnamese: Wikipedia tiếng Việt) is the Vietnamese-language edition of Wikipedia, a free, publicly editable, online encyclopedia supported by the Wikimedia Foundation. Like the rest of Wikipedia, its content is created and accessed using the MediaWiki wiki software.
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 ...
Additionally, some Vietnamese names can only be differentiated via context or with their corresponding chữ Hán, such as 南 ("south") or 男 ("men", "boy"), both are read as Nam. Anyone applying for Vietnamese nationality must also adopt a Vietnamese name. [2] Vietnamese names have corresponding Hán character adopted early on during Chinese ...