物理学用数学语言描述，这种语言的方程式使用了大量的物理常数。在非常真实的意义上，这些物理常数的价值定义了我们的现实。他们不同的宇宙将从我们实际居住的宇宙中彻底改变。常数通常通过观察得出，或者直接（当测量电子的电荷或光速时）或通过描述可测量的关系然后得出常数的值（如在引力常数）。这个列表具有重要的物理常数，以及对它们何时使用的一些评论，并不是详尽无遗，但应该有助于理解如何思考这些物理概念。还应该注意的是，这些常量有时都以不同的单位编写，因此如果您发现另一个与此不完全相同的值，则可能是它已被转换为另一组单位.甚至在阿尔伯特爱因斯坦出现之前，物理学家詹姆斯克拉克麦克斯韦就用他着名的描述电磁场的麦克斯韦方程描述了自由空间中的光速。 随着阿尔伯特爱因斯坦发展他的相对论，光的速度作为现实物理结构的一个重要的潜在重要元素而具有相关性。
c = 2.99792458 x每秒108米
电子充电
我们的现代世界依靠电力运行，电子的电荷是谈论电力或电磁行为时最基本的单位。
e = 1.602177 x 10-19 C.
引力常数
引力常数是由艾萨克·牛顿爵士开发的重力定律的一部分。 引力常数的测量是由入门物理学生通过测量两个物体之间的引力吸引力进行的常见实验。G = 6.67259×10-11 N m2 / kg2
英国南安普顿大学物理学Essay代写:基本物理常数
Physics is described in the language of mathematics, and the equations of this language make use of a wide array of physical constants. In a very real sense, the values of these physical constants define our reality. A universe in which they were different would be radically altered from the one that we actually inhabit. The constants are generally arrived at by observation, either directly (as when one measures the charge of an electron or the speed of light) or by describing a relationship that is measurable and then deriving the value of the constant (as in the case of the gravitational constant). This listing is of significant physical constants, along with some commentary on when they are used, is not at all exhaustive, but should be helpful in trying to understand how to think about these physical concepts. It should also be noted that these constants are all sometimes written in different units, so if you find another value that isn’t exactly the same as this one, it may be that it has been converted into another set of units Even before Albert Einstein came along, physicist James Clerk Maxwell had described the speed of light in free space in his famous Maxwell’s equations describing electromagnetic fields. As Albert Einstein developed his theory of relativity, the speed of light took on relevance as a constant underlying important elements of the physical structure of reality.
c = 2.99792458 x 108 meters per second
Charge of Electron
Our modern world runs on electricity, and the electrical charge of an electron is the most fundamental unit when talking about the behavior of electricity or electromagnetism.
e = 1.602177 x 10-19 C
Gravitational Constant
The gravitational constant was developed as part of the law of gravity developed by Sir Isaac Newton. The measurement of the gravitational constant is a common experiment conducted by introductory physics students, by measuring the gravitational attraction between two objects.
G = 6.67259 x 10-11 N m2/kg2
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