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List of physical constants. The constants listed here are known values of physical constants expressed in SI units; that is, physical quantities that are generally believed to be universal in nature and thus are independent of the unit system in which they are measured.
A physical constant, sometimes fundamental physical constant or universal constant, is a physical quantity that cannot be explained by a theory and therefore must be measured experimentally.
Physical constant, any of a set of fundamental invariant quantities observed in nature and appearing in the basic theoretical equations of physics. Accurate evaluation of these constants is essential in order to check the correctness of the theories and to allow useful applications to be made on.
A list of physical constants that you will need to finish some of the computation problems in this book.
Introduction to the constants for nonexperts. The following material is intended to give nonexperts insight into the general subject of fundamental physical constants. It is adopted from an article written by Barry N. Taylor in about 1971 for the 15th edition of the Encyclopaedia Britannica © 1974 , and is reproduced with permission.
Fundamental Physical Constants — Extensive Listing. 0c Newtonian constant of gravitationc μ0UNIVERSAL299 792 458 1.256 637 061 27(20) × 10−6 0.999 999 999 87(16) 8.854 187 8188(14) × 10−12 376.730 313 412(59) 6.674 30(15) × 10−11 6.708 83(15) × 10−39 6.626 070 15 × 10−34 4.135 667 696 . . . × 10−15 1.054 571 817 . . . × 10 ...
Fundamental Physical Constants — Extensive Listing. Relative std. Quantity Symbol Value Unit uncert. u. r. UNIVERSAL speed of light in vacuum c;c. 0299792458 m s1(exact) magnetic constant . 04π 107N A2. = 12:566370614::: 107N A2(exact) electric constant 1/ . 0c2 .
