When I saw the graph, usually did not apply when the body rather than shielding the barium sulfate and nail varnish to a 2:1 ratio falls dramatically when it was threefold..
Than when applied to the shield typically seen when a barium sulfate and nail varnish 2 graphs: You can see that a significant proportion falls to 1 when the three-fold.
chart usually. the shielding body is not used, the barium sulfate and nail varnish than 2: 1 ratio of three layers significantly when falling on the know..