114
Fig. 6.4 The photonic electron-state energy (step 1) depicting the absorption and emission modes,
and energy deliberation rate (step 2) revealing the energy density (1.4 eV at an energy of 27.77 MW/
m
2  eV) by clarifying the optimum solar irradiance deliberation from a photon particle at various
wavelengths and frequencies of 10
17 to 10
14  Hz
6 Smart Building Technology