belong to every point on the surface of the table. We call these two numbers the co-ordinates of the surface of the table (Gaussian co-ordinates). For example, the point
in the diagram has the Gaussian co-ordinates
,
. Two neighbouring points
and
belong to every point on the surface of the table. We call these two numbers the co-ordinates of the surface of the table (Gaussian co-ordinates). For example, the point
in the diagram has the Gaussian co-ordinates
,
. Two neighbouring points
and