A century after Albert Einstein said we would never be able to observe the instantaneous velocity of tiny particles ... In 1907, Einstein likely did not foresee a time when dust-sized particles ...

A negative gradient shows the rate of “slowing down” or deceleration. Velocity-time graphs show velocity on the vertical axis. Acceleration is still represented by the gradient. Key fact The ...

Figure 3: Time-dependent temperature profile of ... Our results show that the instantaneous Brownian velocity depends on the volume fraction of the nanocrystals. However, at ultralow ...