This equation ... tangential to the instantaneous velocity direction (velocity is a vector, and it has a magnitude and a direction). To visualize this in a flow, we could imagine the motion of a small ...

The goal was to understand the idea of the “instantaneous velocity” of an object ... traveled and divide by the total time. For example, if the object travels 1 meter in 1 second then ...

Our results show that the instantaneous Brownian velocity depends on the volume fraction of the nanocrystals. However, at ultralow concentrations the velocity is independent of the crystal size ...