**Key expressions of the theory of Physics in 5 Dimensions ****- compared to the expressions of Classical Physics.**

Between the classical Euclidean 4-dimensional coordinates of space and time with a direct physical meaning (4-dimensional space) and the Einstein relativity theory with the requirement of general co-variance which takes away from space and time the last remnant of physical objectivity, is the 5-dimensional space-time continuum (5-dimensional space). The condition of general co-variance remains for all systems of coordinates, however there remains a significant element of objective physics with the 5-dimensional space-time continuum.

Please click here to download a paper on the *Physical Constants of Nature* and *Expressions of Physics* where you
can review and compare the *Key Expressions of Classical Physics* alongside the expressions of *Physics in 5 Dimensions*.

The Book by **Alan Clark **- **Physics in 5 Dimensions** - PDF file is available to members of
ResearchGate **here**.