@blcat4: A Few Drops of Milk Turn Clear Water Into a "Glowing Bottle"? The Tyndall Effect Is Amazing! When shining a bright light on plain clear water, only the two ends of the bottle glow. Add a few drops of milk, stir it up, and the entire bottle lights up instantly! But if you add too much milk, only the upper half glows again? The answer is the Tyndall effect! The concentration of particles determines the light scattering effect—come try this super fun optics experiment～ #Science #Physics #Experiment #DIY #popularization #extract #fyp

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Thursday 11 December 2025 08:03:41 GMT