title: Alignment of schlieren and Rayleigh optical systems in the ultracentrifuge. I. Focusing of the camera and cylindrical lenses.
mesh_terms: D008433:Mathematics; D008722:Methods; D055095:Optics and Photonics / Q000295:instrumentation*; D010781:Photography / Q000295:instrumentation*; D014461:Ultracentrifugation / Q000295:instrumentation*