Abstract
Experiments are performed to determine the coherence properties of wave fields, produced by the broadband stellar sources on the earth surface, from the study of spectral changes produced on interference in the Young's double slit experiment. The spectral degree of coherence obtained experimentally in this study for four bright stars in the wavelength range from 325 nm to 660 nm is in close agreement with the value that is expected theoretically from the known angular diameter of the stars. It is shown that the spectral degree of coherence obtained experimentally by this spectral interferometric technique could be used to determine the angular diameter of stars.
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Kandpal, H., Mehta, D., Gopal, E. et al. Determining Field Correlations Produced by Stars from the Study of Spectral Changes in Double Slit Experiment. Astrophysics and Space Science 280, 209–222 (2002). https://doi.org/10.1023/A:1015567332727
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DOI: https://doi.org/10.1023/A:1015567332727