Articles liés à Physical Constant: Physical Quantity, Elementary Charge,...

Physical Constant: Physical Quantity, Elementary Charge, Gravitational Constant, Mathematical Constant, Fine- Structure Constant - Couverture souple

 
9786130516833: Physical Constant: Physical Quantity, Elementary Charge, Gravitational Constant, Mathematical Constant, Fine- Structure Constant

Synopsis

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A physical constant is a physical quantity that is generally believed to be both universal in nature and constant in time. It can be contrasted with a mathematical constant, which is a fixed numerical value but does not directly involve any physical measurement. There are many physical constants in science, some of the most widely recognized being the speed of light in vacuum c, the gravitational constant G, Planck''s constant h, the electric constant ε0, and the elementary charge e. Physical constants can take many dimensional forms: the speed of light signifies a maximum speed limit of the universe and is expressed dimensionally as length divided by time; while the fine-structure constant α, which characterizes the strength of the electromagnetic interaction, is dimensionless.

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