The Spark in a Teacup and a ThundercloudHow a simple water toy explains the power of lightning.

From the show

Nature's Hidden Blueprint

Discover the surprising link between a 19th-century desktop curiosity and the immense electrical forces within a storm. The Kelvin water dropper, a device that creates high voltage from falling water, reveals the same feedback loop that separates charges in clouds. This tabletop experiment elegantly demonstrates the fundamental physics that builds up to a powerful lightning strike, showing how a simple principle operates at vastly different scales.