🧠 The Daily Fact #32

Potatoes can absorb and reflect Wi-Fi signals, making them surprisingly useful for testing airplane wireless systems. When Boeing was developing in-flight Wi-Fi, engineers used sacks of potatoes to simulate passengers because their water content and chemical makeup mimic the way humans interact with wireless signals. The experiment, called “Synthetic Personnel Using Dielectric Substitution” (SPUDS for short), helped ensure strong and consistent internet connectivity for real passengers.