Optical interferometric vibration measurements of biological objects

In this paper, we chose the embryos of snails as subject of inquiry. The freshwater snails Marisa cornuarietis and Planorbis sp. are easy to maintain, mature, and spawn in captivity. Their eggs are transparent and we can observe the developing embryos. Embryos were obtained from natural spawning. The experimental setup for these measurements consists of the laser heterodyne receiver, the small glass aquarium (100x100x150 mm) on the movable support, the extra source of light and PC.