A method for the production of the photoelectron the wavelength of which is homogeneous with and resonating at the wavelength of the photoelectron emitted in a cell, promoting the activity of cell comprising:
- A division of an internal cylinder and a case;
- and, inside of the internal cylinder, a means for the luminescence of light, a means for the reflection of light, a means for the dispersion of light, a means for the transmittance of light wavelength, a means for the expansion of wavelength through the dispersion, diffraction and interference of light, a means for the absorbance of light, a means for sensing the brightness of a means for the luminescence of light, and a means for sensing the quantity of emanating light wavelength.