Method for Using a Laser and Camera to Determine the Turbidity of a Liquid System
Smith, Elisabeth Steffani-Anne
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The surface of Titan hosts lakes of liquid methane. Evidence suggests the presence of suspended particles in these lakes. A method utilizing a laser and camera to find turbidity is explored. Extinction coefficients were found by measuring the backscatter of light from a laser with a camera. Lasers of various wavelengths were pointed at a specified angle into an aquarium filled with water. Five images are taken of the laser. TiO2 and SiO2 particles were incrementally added to the system. Five more images are taken. Images were analyzed to find the extinction coefficient. The change in extinction coefficients against the number concentration of particles was then plotted. This data was fitted to equations, which showed the number concentration of particles could be determined from the observed extinction coefficient.