Western painting critic Robert Coates. Abstract expressionism, Action painting, and Color Field painting are synonymous with the New York School. Technically Surrealism was an important predecessor for Abstract expressionism with its emphasis on spontaneous, automatic or subconscious creation. Jackson Pollock's dripping paint onto a canvas laid on the floor is a technique that has its roots in the work of André Masson. Another important ear<nowiki>ly m</nowiki>anifestation of what came to be abstract expressionism is the work of American Northwest artist Mark Tobey, especially his "white writing" canvases, which, though generally not large in scale, anticipate the "all over" look of Pollock's drip
Nuclear drip line and neutrons described by the chart of the nuclides, also called the valley of stability. The boundaries of this valley are the neutron drip line on the neutron rich side, and the proton drip line on the proton-rich side. Between those two lines, when a nucleus has a reasonable balance of protons and neutrons, the total nuclear mass is limited by alpha decay, or the alpha drip line, which connects the proton and neutron drip lines. The alpha drip line is somewhat more difficult to visualize as it also branches down through the center of the chart. These limits exist