Fog Density Measurment

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Project Description

A nice way to measure the provided water mass rate would be to use light scattering by either measuring how much light is transmitted through the fog or directly how much light is scattered. If we even manage to measure the directions at which the light is scattered, it could give informations about droplets sizes distribution.

Theory

When light interracts with a droplets, there is a probability that it scatters. By installing a laser going through the fog and a photosensor at a certain angle with the laser direction, one could measure a signal due to the scattering. This signal would be more intense if the fog is more dense.

To do : detail theory

Experimental Setup

By Sunspeanzler - Own work, information source e.g. Laser Diffraction, product information, Company Sympathec GmbH, CC BY-SA 3.0, Link

Phototransistor test

To do : resume week 9 assignment