<ul><li>Fluids like air and water are called Newtonian because their viscosity does not vary with the force that’s applied to them.</li><li>Many common fluids are non-Newtonian, meaning that their viscosity changes depending on how they’re deformed.</li><li>Non-Newtonian droplets can behave very differently than Newtonian ones, with behaviors ranging from liquid-like to completely solid.</li><li>The behavior of non-Newtonian droplets is influenced by the presence of silica particles within the fluid.</li></ul>

Non-Newtonian Raindrops

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