Digital holographic interferometry in physical nanomeasurements

Abstract

The possibility of using digital holographic interferogram obtained via laser radiation at different wavelengths and different pulse lengths in different times for the reconstruction of dynamic phase changes was explored. The opportunities for applying the digital holographic interferometry method to the study of resonant mode shapes in resonant acoustic spectroscopy are shown. The results of experimental measurements and analytical calculations are submitted.

The Influence of the Opening Angle of the Soil Pusher of the Combined Machine Leveler on Its Performance

“…Currently, in our country, land preparation for sowing seeds is carried out separately many times by means of medium and heavy toothed harrows, chisel-cultivators and various levelers [1]. However, this leads to deterioration of the physical and mechanical properties of the soil, a lot of moisture loss from the soil, and an increase in fuel consumption and other costs.In addition, the machines used for tillage before planting do not meet modern requirements such as minimal and economical tillage.Based on the above, in the scientific-research institute of agricultural mechanization, in the cultivation of cotton, grain and other agricultural crops, all technological processes are performed in one pass through the field for processing the land before planting, that is, the land is designated A combined machine has been developed that can soften to depth, create a soft soil layer on the surface of the field, level it, and ensure its compaction to the required level.…”