list the two conditions essential for using median in colloid
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A colloid is a mixture in which one substance of microscopically dispersed insoluble particles is suspended throughout another substance. Owing to this peculiar structure of colloid, it has varied physical and chemical properties. Let us explore more about the physical, chemical, optical as well as electrical properties of colloidal solutions.
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Not every scattering of light can be Tyndall effect. For example, when the sky is overcast, the sunlight passes through the turbid layer of the clouds, resulting in scattered and diffused light on the ground. This does not exhibit Tyndall scattering because the cloud droplets are larger than the wavelength of light and scatter all colors almost similarly. Two conditions to be satisfied to observe Tyndall effect:
The diameter of the dispersed particles should be smaller than the wavelength of light used
The refractive indices of dispersion medium and the dispersed phase must vary in magnitude to a large scale
Not every scattering of light can be Tyndall effect. For example, when the sky is overcast, the sunlight passes through the turbid layer of the clouds, resulting in scattered and diffused light on the ground. This does not exhibit Tyndall scattering because the cloud droplets are larger than the wavelength of light and scatter all colors almost similarly. Two conditions to be satisfied to observe Tyndall effect:
The diameter of the dispersed particles should be smaller than the wavelength of light used
The refractive indices of dispersion medium and the dispersed phase must vary in magnitude to a large scale
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