How Many Licks Does it Take to Get to the Center of a Tootsie Pop?

How many licks does it take to get to the center of a Tootsie Pop? Scientists decided to create their own candies and test how quickly they were able to reach the center! Learn more about how scientists did this! 

The researchers seeded the water with microparticles so they could see the "flow field," shown here as fluorescent streak lines.

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