	Classical Physics	Modern Physics		Unified Physics
Physical Existence	Mass m	Mass m Energy E		Mass m Energy E Dark mass D
physical theory	Classical mechanics	Quantum mechanics	Relativity	Cosmic Continuum Theory
Existence Dimension	3-dimensional space	3-dimensional space	4-dimensional space-time	4-dimensional space-time x-dimensional dark space
Physical constant	Gravitational constant G	Planck constant h	Speed of light c	frequency extreme value $υ_{\max}$
Mathematical equation	$F = m a$ $F = G \frac{m_{1} m_{2}}{r^{2}}$	$E = h υ$	$E = m c^{2}$	$Δ E \equiv Δ x$