The phase contrast principle has been applied to a telescopic system to produce a simple instrument of high sensitivity for studying inhomogeneities in fluid media. As an example of the power of the method, the phase contrast telescope has been used to study the regions in and around premixed propane gas flames.
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W. G. Parker and H. G. Wolfhard, J. Chem. Soc. 2038 (1951).
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© 1956 American Institute of Physics.
1956
American Institute of Physics
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