Unified Mechanics on Thermodynamics, Classical Mechanics, Quantum Mechanics

Classical and quantum mechanics laws are rebuilt in the frame of new thermodynamics. Heat is the sum of kinetic energy, system work, and system potential of a system, while force is the heat gradients over distance. Hence, collision, temperature difference, and molar volume gradients are the sources of forces. The collision creates symmetric forces, i.e., mutual repulsion or attraction. The other sources produce asymmetric forces driving rotation and spin (self-rotation). Interaction doesn’t need a medium. As achievements, 1) a brief and general equation is derived to predict the equilibrium distance of molecular interaction: L_e=∛((3π^(α-1) m_A g)/(4N_A kT)), without using any assumption; 2) electrons and protons are electroneutral, while neutrons are the cold protons with ∆T≈6.01×〖10〗^9 K; thus, the heat of nuclear reaction, 4(_1^1)H→(_2^4)He, is ~9.18 MeV; 3) atom has isothermal and non-isothermal orbits. Each orbit accommodates 2 electrons with opposite spins; 4) the first ionization energies of elements reported in the references are close to the kinetic energies calculated in this paper; 5) the strengths of chemical bonds and H-bonds are calculated, comparable with the experimental data; 6) vibrations of chemical bonds are discussed which disclose the source of α in the system potential. It is suggested that transferring heat from the hot electrons and nuclei to the cold ones makes a network in the cosmos. Photons are the messengers on the way rather than the roaming travelers.