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首页> 外文期刊>Journal of Modern Physics >Time, Length, and Mass Are Derived Quantities
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Time, Length, and Mass Are Derived Quantities

机译：时间，长度和质量是衍生数量

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Fundamental units of measurements are kilograms, meters, and seconds—in regards to mass length, and time. All other measurements in mechanical quantities including kinetic quantities and dynamic quantities are called derived units. These derived units can be expressed in terms of fundamental units, such as acceleration, area, energy, force, power, velocity and volume. Derived quantities will be referred to as time, length, and mass. In order to explain that fundamental units are not equivalent with fundamental quantities, we need to understand the contraction of time and length in Special Relativity. If we choose the velocity of light as fundamental quantity and length and time as derived quantities, then we are able to construct three-dimensional space-time frames. Three-dimensional space-time frames representing time with polar coordination, time contraction and length contraction can be shown graphically.
机译：关于质量长度和时间，基本度量单位是千克，米和秒。机械量的所有其他度量（包括动力学量和动力学量）都称为派生单位。这些导出的单位可以用基本单位来表示，例如加速度，面积，能量，力，功率，速度和体积。导出的数量将称为时间，长度和质量。为了解释基本单位与基本数量不相等，我们需要了解狭义相对论中时间和长度的收缩。如果我们选择光速作为基本量，选择长度和时间作为导出量，那么我们就可以构建三维时空框架。可以以图形方式显示具有极坐标，时间收缩和长度收缩的三维时空帧。

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