In words, the vorticity tells how the velocity vector changes when one moves by an infinitesimal distance in a direction perpendicular to it.
Sixty years was an infinitesimal distance in the past, astronomically speaking; the chances of any noticeable change occurring since then were very small.
We spend huge sums to explore the distant heavens and the infinitesimal distances of the atomic nucleus.
Thus the metric tensor gives the infinitesimal distance on the manifold.
If is separated from P by an infinitesimal distance then is the local vector.
In the simplest terms, two points which lie at an infinitesimal distance apart are considered infinitely near.
Rana Trilvy is that close - " she replied, holding her thumb and forefinger an infinitesimal distance apart.
Dipping his sleek head an infinitesimal distance, he acknowledged her patent response.
The charge extends to an infinitesimal distance in the z direction so we shall call it a surface charge.
It travels an infinitesimal distance, then is captured by yet another hot ion of the plasma, and the process repeats.