Coandă effect

Coandă effect is a way that air or other gases can move around objects when they get close. Think of it as a kind of invisible force that helps air or gas flow in certain ways. For example, when you blow air from your mouth, it usually goes in a straight line. But if you get close to an object, like a wall, the air will start to follow the contours of the wall. That's the Coandă effect at work!