Criteria for quantitative schlieren interferometry.
An evaluation is made of a criterion suggested by Temple for the size and location of obstacles in the focal plane of a schlieren interferometer. Measurements of the thermal distributions near a heated vertical plate and near a heated horizontal cylinder are presented. The results of previous experiments are discussed; the results of new experiments are reported. It is concluded that, unless the criterion is satisfied, the resulting fringe systems will not give the correct quantitative results.
Brackenridge
J B
JB
Brown University, Providence, Rhode Island, USA.
Peterka
J
J