nod (nod)

[ They sometimes, from the private nods and ambiguous orders of their prince, perform some odious or execrable action. IMG:content-1415.png:[blocks in formation] bration. Their existence is shown by sprinkling sand on the vibrating plate. During its motion the sand is thrown off the vibrating parts and accumulates in the nodal lines. The figures thus produced were discovered and studied by Chladni, and are hence called Chladni's figures; they are always highly symmetrical, and the variety, according to the shape of the plate, the way it is supported and set vibrating, etc., is very great. - Nodal locus. See locus. Nodal points, those points in a vibrating body (as a string IMG:content-1416.png:[blocks in formation] extended between two fixed objects) which remain at absolute or comparative rest during the vibration, the portions lying between the nodes being called loops. nodated (no'dā-ted), a. [L. nodatus, pp. of nodare, fill with knots, tie in knots,