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Dimensional Analysis

量纲分析


The Speed of Light

光的速度

The speed of light is a universal orfundamental constant.

光的速度是一个普遍的或基本的常数。

It's a fundamental constant because itsvalue cannot be explained or derived from other constants. This is different,for example, from the atomic mass of an element that can be derived by addingup the mass of all its fundamental components.

它是一个基本常数,因为它的值不能解释或从其他常数中导出。这是不同的,例如,从一个元素的原子质量,可以通过增加它的所有基本成分的质量而得到。

It's a universal constant because it isrelevant for describing phenomena throughout the universe. This is againdifferent from the atomic mass of an element that could provide valuableinsights in the specific outcomes of a chemical reaction. But both the elementand the reaction might only be found in very few places. However, you willencounter the speed of light not only in explanations about light itself, butalso about energy, time, distance, gravity etc.

这是一个宇宙常数,因为它与描述宇宙中的现象有关。这又不同于一个元素的原子质量,它可以为化学反应的具体结果提供有价值的见解。但是元素和反应都只能在极少数地方找到。然而,你会遇到光的速度,不仅是关于光本身的解释,还有能量、时间、距离、重力等等。

Because the speed of light is present inthe description of various phenomena, it can also suggest that there existssome underlying unity between them.

由于光的速度存在于各种现象的描述中,也暗示着它们之间存在着某种内在的统一。