Fish swim water bulk displacement visualization with digital holographic interferometry
| Autor: | Gloria Frausto-Rea, María del Socorro Hernández Montes, H I Manuel De la Torre, Fernando Mendoza-Santoyo |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Holography Phase (waves) 01 natural sciences Collimated light 010309 optics Optics Goldfish 0103 physical sciences Moire deflectometry Animals Electrical and Electronic Engineering Engineering (miscellaneous) Swimming Poecilia Water Movements business.industry Water Equipment Design Holographic interferometry Atomic and Molecular Physics and Optics Cuvette Interferometry business Beam (structure) |
| Zdroj: | Applied Optics. 60:5376 |
| ISSN: | 2155-3165 1559-128X |
| DOI: | 10.1364/ao.425059 |
| Popis: | A collimated transmission beam interferometer is used to measure the water motion provoked by the fish swimming through it. An indirect measurement of the fish motion impact in the water contained in a home-type aquarium is detected. Measurements of the whole aquarium are possible due to a large diameter collimated laser beam in the interferometer’s object arm. This beam goes through the aquarium, and any perturbation inside it deflects the collimated beam. The interferometer detects a phase difference, i.e., the beam through the disturbed water undergoes different optical paths. This optical phase change was first demonstrated by means of a simple test using spherical steel marbles placed in a cuvette. For this, the small water movements for a single steel marble are detected with the acquired optical phase. Next, the aquarium optical phase results show water movements according to the fishes’ size and swimming speed. It is worth mentioning that no additives were added to the aquarium’s fresh water during the tests, so the water was crystal clear. |
| Databáze: | OpenAIRE |
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