An apparatus has been designed for the photographic observation of fluid flow between concentric isothermal spheres. A description of the apparatus and the solutions to photographic problems encountered are presented and discussed.
E. H. Bishop,
R. S. Kolflat,
L. R. Mack,
J. A. Scanlan,
"Photographic Studies of Convection Patterns Between Concentric Spheres," Optical Engineering 3(2), 030247 (1 January 1965). https://doi.org/10.1117/12.7971310