But when Dogic’s team dragged two actin filaments against each other, they observed frictional forces nearly 1,000 times greater than expected — closer to the solid friction created by, say, pushing ...

The amount of friction depends on the fluid viscosity and the velocity gradient (that is, the relative velocity between fluid layers). The velocity gradients are set up by the no-slip condition at the ...

Probably the heat generated by the friction of the solid parts of the pump was also communicated to the water, and tended to elevate its temperature. Count Rumford, by boring a cylinder of cast ...

IT is well known that the friction of solids on snow surfaces is larger than on ice surfaces. The higher kinetic friction obtained on snow is attributed to the extra work done in displacing and ...

Materials scientists are measuring the rolling friction of tiny, micrometer-sized particles. These measurements permit them to better understand everyday products such as concrete.

Not only to reduce friction, overheating and wear ... The lubricant COK-47 is not liquid like lubricating oil, but a powdery ...