The same physical quantities which have dimensions will have different values when working with different basic dimensions. For example, 2m is 200cm, and it is also 6.56167979 feet. Similarly, one can work with gr, kg, lb, ton, etc, or choose yrs or fortnights instead of seconds. The set...
M. Bunge: A mathematical theory of the dimensions and units of physical quantities. In: Problems in t h e Foundations of Physics, M. Bunge (ed.). New York: Springer 1971Bunge, M. (1971). A Mathematical Theory of Dimensions and Units of Physical Quantities. In: M. Bunge & et al, ...
校正方法:校准仪器;在数据处理中进行修正。 Random errors (随机误差):caused by fluctuations in an instrument due to unknown and unpredictable changes in an experiment. 由于不可预测的随机因素导致的测量值的波动。这种误差在测量过程中是无规律的,会在测量值中忽高忽低的出现。 举例:使用秒表测量100m短跑时...
Use of Physical Quantities, Units, Mathematics, and Nomenclature in Heat Transfer Publicationsdoi:10.1080/01457638808939682MAYHEWYON R.Taylor & Francis GroupHeat Transfer Engineering
1.4 Scalars (标量)and vectors (矢量) 能理解标量和矢量的区别。 会共面矢量(coplanar vector)的加减法. 将矢量分解为俩个互相垂直的分量(perpendicular components) 标量:只有大小,没有方向的物理量。 例子:速度(speed),质量(mass),时间,距离。 矢量:既有大小又有方向的物理量。
The first IUPAC Manual of Symbols and Terminology for Physicochemical Quantities and Units (the Green Book) of which this is the direct successor, was published in 1969, with the object of 'securing clarity and precision, and wider agreement in the use of symbols, by chemists in different coun...
A large soccer field is 115 m long and 85 m wide. What are its dimensions in feet and inches? (Assume that 1 meter equals 3.281 feet.) 6. What is the height in meters of a person who is 6 ft 1.0 in. tall? (Assume that 1 meter equals 39.37 in.) 7. Mount Everest, at 29,...
(1988), Quantities, units and symbols in physical chemistry (abbreviated list). Compiled by K. H. HOMANN for the IUPAC Commission on Physicochemical Symbols, Terminology and Units. ISBN 0-632-01774-0. Oxford: Blackwell Scientific Publications 1987. 4. pages, 21 × 30 cm, laminated card. ...
(redirected from Dimensions of units)Also found in: Thesaurus, Medical, Encyclopedia. International System of Units also International System n. A complete, coherent system of units used for scientific work, in which the fundamental quantities are length, time, electric current, temperature, ...
1.4 The Invariance of Quantities when Using Various Units 1.5 Quantitative Equations 1.6 Numerical Equations 1.7 Adjusted Quantitative Equations 1.8 The Transition from Numerical to Quantitative Equations 1.9 Equations of Units 1.10 Dimensions 2 The System of Units of Measurement and the Conventions Concerni...