Answers are grounded in this paper and cite their sources.
A technique for the quantitative measurement of fluid velocities in the range 0–5 cm/sec is described. The technique uses a pH indicator, is applicable in aqueous solutions and permits visualization and measurement of three-dimensional flow fields.
No takes yet. Share an insight, caveat, or question.
D. James Baker (1966) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: