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Pi is not a physical constant but a mathematical one; I.e. it can be derived a priori, without a physical universe. A physical constant would be Planck's, or th
by duaneb 14y ago
Pi is not a physical constant but a mathematical one; I.e. it can be derived a priori, without a physical universe. A physical constant would be Planck's, or the gravitational constant, or c. Those may well be "arbitrary" for all I know.
- vorg 14y agoc, G, and h need predefined measures of meter, second, and kg to be defined, whether or not they're "arbitrary". There true measure is 1, 1, and 1.
- eru 14y agoDepends. You can choose your measuring system to make some physical constants 1, but not all. And the choice is not obvious for all constants.