. Compendium of meteorology. Meteorology. 0 1 E 3 4 5 CM . SCALE,,. : Fig. 3.—Convection pattern in a chamber of depth 8 mm; temperature difference between top and bottom of chamber, 28C. between top and bottom of the chamber. This shows a series of polygonal cells, in each of which the motion was do'ft'nward at the centre, upward at the outer margin, and inward at the top. In addition, there are some long rolls which fill the chamber when the smoke is first injected, and which gradually break up into separate polygonal cells. This feature was particularly noticeable in all chamber depths of 8


. Compendium of meteorology. Meteorology. 0 1 E 3 4 5 CM . SCALE,,. : Fig. 3.—Convection pattern in a chamber of depth 8 mm; temperature difference between top and bottom of chamber, 28C. between top and bottom of the chamber. This shows a series of polygonal cells, in each of which the motion was do'ft'nward at the centre, upward at the outer margin, and inward at the top. In addition, there are some long rolls which fill the chamber when the smoke is first injected, and which gradually break up into separate polygonal cells. This feature was particularly noticeable in all chamber depths of 8 mm or more, but eventually the long rolls were replaced by poly- gonal cells. Figure 4 shows the structure found in a chamber of depth 7 mm, the whole chamber being filled with polygonal cells almost instantaneously after the in-. -.*v^^ r! >W/^^ •>«. <-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original American Meteorological Society. Committee on the Compendium of Meteorology; Malone, Thomas F. Boston : American Meteorological Society


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