Abstract
IN NATURE (May 14, p. 707) Dr. E. A. Baker discusses the calibration curves of photographic plates. The curves he gives certainly show a good agreement in sensitivity between the different batches of plates used under his conditions of standardisation. Concerning the reference to Harvard results (Harvard Circular 302), it may be of interest to note several points not fully discussed in the original paper on spectrophotometric method.
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HOGG, F., PAYNE, C. The Calibration of Photographic Plates. Nature 119, 925 (1927). https://doi.org/10.1038/119925b0
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DOI: https://doi.org/10.1038/119925b0
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