With their identification of negative velocity, scientists have made a physics-defying discovery about how cells move.

The cells in our bodies move in groups during biological processes such as wound healing and tissue development—but because of resistance, or viscosity, those cells can't just neatly glide past each ...

This article explores viscosity terms and definitions, unraveling the intricacies of fluid behavior. Absolute Viscosity - The force required for a liquid to overcome its internal friction and commence ...