Explain The construction and working of Turbidimetry and Nephelometry?

When the light is incident on a solution containing suspended particles. The fraction of the light it scattered and the remaining is transmitted. If we know the intensity of transmitted radiations then we can have quantitative analysis. This phenomenon is known as Turbidimetry. And if we measure the intensity of scattered radiation then also we can have quantitative analysis, This phenomenon is known as Nephelometry.