Kids watching beads drifting through fluids of different viscosities at the OIST Science Festival

Photo of two children and their respective intently watching a tall, transparent cylinder filled with different liquids, one tinged yellow and the other clear. A tiny black bead is suspended in the clear liquid. In the background, other children and parents are participating in different fluid experiments.

The speed of the small black bead drastically changes as it moves down the cylinder through different liquids, each with a different viscosity. The final layer at the bottom has the highest viscosity, slowing the bead down to a snail’s pace.

Date:
01 February 2025
Credit:
Jeff Prine / OIST
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