JAN 03, 2019 7:39 AM PST

What's Raisin Bran Effect?

WRITTEN BY: Daniel Duan

A healthy breakfast won't just make you feel wholesome and energetic, it may also improve your understanding of the dynamic of particle based-fluids.

Named after the famed breakfast cereal, the raisin bran effect (officially known as granular convection) describes a seemingly gravity-defying phenomenon: when a mixture of variously sized particles was given sufficient amount of agitation, the larger and heavier ones always end up on the top layer.

Although there have been a few postulated explanations behind this phenomenon, it is generally accepted that the articles, embodied by the shaken cereal mix, can form convection cells similar to the dynamics of fluids. Both small and large particles follow the convection flow at the beginning. However, the latter become stuck on the top layer due to their size. Over time, the larger particle rises in the mixture. 

Source: It's Okay to Be Smart via Youtube

About the Author
  • Graduated with a bachelor degree in Pharmaceutical Science and a master degree in neuropharmacology, Daniel is a radiopharmaceutical and radiobiology expert based in Ottawa, Canada. With years of experience in biomedical R&D, Daniel is very into writing. He is constantly fascinated by what's happening in the world of science. He hopes to capture the public's interest and promote scientific literacy with his trending news articles. The recurring topics in his Chemistry & Physics trending news section include alternative energy, material science, theoretical physics, medical imaging, and green chemistry.
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