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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 ...
The Vietnamese grading system is an academic grading system utilized in Vietnam.It is based on a 0 to 10-point scale, similar to the US 1.0-4.0 scale.. Typically when an American educational institution requests a grade-point average calculated on the 4 point scale, the student will be expected to do a direct mathematical conversion, so 10 becomes 4.0, 7.5 becomes 3.0, etc.
The main managing agency responsible for science and technology (S&T) in Vietnam is the Ministry of Science and Technology (MOST). MOST's responsibilities include scientific research, technology development and innovation activities; development of science and technology potentials; intellectual property; standards, metrology and quality control; atomic energy, radiation and nuclear safety ...
Metrology is defined by the International Bureau of Weights and Measures (BIPM) as "the science of measurement, embracing both experimental and theoretical determinations at any level of uncertainty in any field of science and technology". [15] It establishes a common understanding of units, crucial to human activity. [2]
Vietnam Academy of Science and Technology; Vietnam Petroleum Institute; Vietnam Software Association; Vietnam Standards; Vietnamese language and computers; Vietnamese units of measurement; VinFuture Prize
The SI units are defined by declaring that seven defining constants [1]: 125–129 have certain exact numerical values when expressed in terms of their SI units. The realisation of the definition of a unit is the procedure by which the definition may be used to establish the value and associated uncertainty of a quantity of the same kind as the ...
The atomic units have been chosen to use several constants relating to the electron: the electron mass, the elementary charge, the Coulomb constant and the reduced Planck constant. The unit of energy in this system is the total energy of the electron in the Bohr atom and called the Hartree energy. The unit of length is the Bohr radius.
"A base is a natural number B whose powers (B multiplied by itself some number of times) are specially designated within a numerical system." [1]: 38 The term is not equivalent to radix, as it applies to all numerical notation systems (not just positional ones with a radix) and most systems of spoken numbers. [1]