Evolution of bioconvective patterns in variable gravity
Noever, D. A. (1991). "Evolution of bioconvective patterns in variable gravity." Physical Review A 44 8: 5279-91
Measurements are reported of the evolution of bioconvective patterns in shallow, dense cultures of microorganisms subjected to varying gravity. Various statistical properties of this random, quasi-two-dimensional structure have been found: Aboav's law is obeyed, the average vertex angles follow predictions for regular polygons, and the area of a pattern varies linearly with its number of sides. As gravity varies between 1 g and 1.8g (g = 9.8 m s-1), these statistical properties continue to hold despite a tripling of the number of polygons and a reduced average polygon dimension by a third. This work compares with experiments on soap foams, Langmuir monolayer foams, metal grains, and simulations.
PMCID: Source: NASA. 00024366
Accession Number: 9906580