In high school science class ... electrons instead act together in a way that resembles a viscous fluid such as oil. This ...

In response, the flow slows down. However, the fluid in the boundary layer has already given up some momentum because of viscous losses and viscous friction, and it does not have enough momentum to ...

If I fill the same cup with water, for example, the cup will drain much more quickly. Viscosity is a measure of a fluid's resistance to flow. It describes the internal friction of a moving fluid. A ...