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Fig. 13. Effects of cos{theta} on finger behavior. Experiments were run at different cos{theta} values, but similar Q. Image times give an indication of relative velocity. (a) cos{theta} = 1.0, Q = 0.254 cm3 min–1, t = 90 s; (b) cos{theta} = 0.50, Q = 0.265 cm3 min–1, t = 200 s; (c) cos{theta} = 0.25, Q = 0.247 cm3 min–1, t = 285 s; and (d) cos{theta} = 0.125, Q = 0.235 cm3 min–1, t = 375 s.