Abstract
IT is well known that the phase-contrast microscope cannot give a faithful representation of optical path-differences as variations of intensity in the image when the detail considered is coarse. This is because light is diffracted by coarse detail through only small angles, and hence the necessary separation of direct and diffracted beams cannot be complete. The edges of large details are therefore emphasized, giving a characteristic appearance to phase-contrast images.
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Nature, 163, 400 (1949).
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DYSON, J. A Transmission-Type Interferometer Microscope. Nature 164, 229 (1949). https://doi.org/10.1038/164229a0
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DOI: https://doi.org/10.1038/164229a0
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