- by KitchenPantryScientist
This morning my 9 YO came down the stairs and told me she does the soap science experiment every time she washes her hands.
“Which one?” I asked.
“The one where the soap jumps!” she said, demonstrating for me by pouring a thin stream of liquid hand soap from one palm to the the other. “Sometimes it jumps clear out of the sink!”
Over a year ago, my daughter and some of her friends helped me do this “Kaye Effect” experiment (shared with me by Dr. Greg Gbur) for my book “Kitchen Science Lab for Kids,” but I had no idea that it stuck in her mind, or that she’d figure out a new way to do the experiment.
Maybe some day in the future, she’ll remember that shear-thinning fluids like soap can “jump” and it will help her solve a problem, or even create something new!
Here’s my original post on the Kaye Effect.