Search

The paper discusses spectral sensitized photo processes in silver bromide caused by dyes adsorbed on the surface of silver stearate via the lightguide mechanism and a direct hit of the luminescent light from dye molecules localized near the microcrystal of silver bromide to the microcrystal of silver bromide. The paper submits an estimation of the contribution of dye molecules localized on the surface of silver stearate to overall spectral sensitization. These calculations demonstrate that the contribution of dye molecules adsorbed on the particle of silver stearate to spectral sensitization of silver stearate—silver bromide structure is comparable to the contribution of dye molecules placed on the microcrystal of silver bromide. Dye molecules localized on the particle of silver stearate allow to raise the efficiency of spectral sensitization by 40 to 60 percent.

The vibrations and stability of a plate having a finite length were considered in a flat supersonic flow, having adopted an assumption that one of the edges of the plate has a hinged support, and the other edge is free. Another support was located in an internal point of the plate and featured resilient attenuation properties. A compressive force, called the follower force, was applied within the plane of the plate in a direction tangent to the deformed surface of the plate. This way, a superficial system was forced in which two independent physical factors occurred and caused its self-excitation. Therefore the superficial system could be termed a ‘double self-excited system’. The solution of the equations of motion for the system was derived with a Laplace transformation.