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Q
why emulsions are white in colour
I'm a seasoned industrial engineer with a keen interest in machine learning. Here to share insights on latest industry trends.
Emulsions appear white because they contain tiny droplets of one liquid dispersed in another, with which it does not mix. When light hits these droplets, it is scattered in all directions, a phenomenon known as the Tyndall effect. This scattering is more effective when the droplets are comparable in size to the wavelength of visible light, leading to a greater deflection and diffusion of light. Given that all wavelengths of visible light are scattered equally, the emulsion takes on a white appearance. This is similar to the reason clouds, which are composed of tiny water droplets or ice crystals, appear white. The composition and size of the emulsified particles play a crucial role in the intensity and purity of the observed whiteness.
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