Fundamental constant

In Physical, the constant concept of fundamental can take two significances: that can be

a fixed size without unit intervening in the equations of physics.
a size fixes whose value cannot be predicted by the theory.

In the first category, one can quote for example the Constante of fine structure, and in the second, one often admits that there are three: C, G and H.
In all the cases, these constant is judicious not to vary in time or space. However, it seems that is not the case, which calls into question the current theories in physics.
Moreover, the number of fundamental constants is not completely decided: the Boltzmann constant still poses problem for example. The objective of the physicists is precisely to find a theory which would not need to pose the value of fundamental constants.

Remark :

the fundamental constants of the second type are often used to homogenize a equation, i.e. to use only sizes without unit.
One can see the first type of constants like a particular case of the second.

Internal bonds

External bonds

capricious constants of physics

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