The sky looks clearer and brighter after rain due to loading by rain drops. Which of the following is similar to the process mentioned above ?

Water is sprinkled on a dusty street to help the dust particles settle down before sweeping. It then becomes eaiser for sweeping. Such a process is called loading (or) coagulation. It is a common experience that after rain the sky looks clear and brighter. This is because the dust particles settle down due to loading by rain drops.