Starting vortex

Imagine you're in a bathtub and you want to make a whirlpool by swirling the water around with your hand. When you do this, you create a movement that goes down towards the drain, and the water curves around and rises up in the middle.

This movement, where the water goes down towards the center and creates a whirlpool, is called a starting vortex. It's like twirling a spoon in a cup of coffee, and the coffee spins around and around.

Starting vortices happen in lots of different places in nature, like when you see smoke rings or when swimmers make ripples in a pool. They also happen in things like airplanes, where the wings create a spiral of air that helps lift the plane into the sky.

So, a starting vortex is like a spinning movement of water or air that starts at a point and goes in a circular direction. Pretty cool, huh?