How does a mercury clutch work?

A Mercury clutch uses a small amount of mercury as a fluid coupling medium between two rotating components. When the driving component spins, it causes the mercury to expand and move, creating a hydraulic force that engages the driven component. This engagement allows for smooth and progressive power transfer without direct mechanical contact, reducing wear and providing a controlled response. Mercury clutches are often used in applications where precise control is needed, such as in some automotive transmissions and industrial machinery.