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Carst and Walker

Why is tomato sauce so hard to pour?

Ever go to pour ketchup on your fries…and nothing comes out? Or the opposite happens, and your plate is suddenly swimming in a sea of red? Here’s the physics behind this frustrating phenomenon.

This TED video explains how ketchup and other non-Newtonian fluids can suddenly transition from solid to liquid and back again.

Source: TED Talks

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