Preliminary investigation of the use of afterglow for visualizing low-density compressible flows /

An investigation is described in which the phenomena of afterglow were utilized to make visible the low-density supersonic flows of various gases. Photographs of the afterglow in the supersonic flow about wedges are compared with schileren photographs which demonstrate its use and effectiveness for visualizing density changes in compressible flows.NACA TN No. 1900."June 1949."Includes bibliographical references.An investigation is described in which the phenomena of afterglow were utilized to make visible the low-density supersonic flows of various gases. Photographs of the afterglow in the supersonic flow about wedges are compared with schileren photographs which demonstrate its use and effectiveness for visualizing density changes in compressible flows.Mode of access: Internet