In physics, a dimensionless physical constant (sometimes fundamental physical constant) is a universal physical constant that is dimensionless – having no unit attached, so its numerical value is the same under all possible systems of units. The best known example is the fine structure constant α, with the approximate value 1/137.036.
However, the term fundamental physical constant has also been used (as by NIST) to refer to universal but dimensional physical constants such as the speed of light c, vacuum permittivity ε0, Planck's constant h, or the gravitational constant G.
Read more about Dimensionless Physical Constant: Introduction, Constants in The Standard Model and In Cosmology, Variation of The Constants, Calculation Attempts
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“The axioms of physics translate the laws of ethics. Thus, “the whole is greater than its part;” “reaction is equal to action;” “the smallest weight may be made to lift the greatest, the difference of weight being compensated by time;” and many the like propositions, which have an ethical as well as physical sense. These propositions have a much more extensive and universal sense when applied to human life, than when confined to technical use.”
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