Abstract
THE question raised by Mr. Banerji is certainly important from the point of view of exact astronomy, but it is not new. It was fully discussed several years ago, and at Rome in 1922 the geodesists stated that field operations with small instruments in the open did not show anything like the large range shown by the fixed transit circles of the leading observatories. It was conjectured that the confined air in the transit circle rooms might cause some lateral refraction through irregular stratification. At a recent meeting of the Royal Astronomical Society Prof. Sampson put the discordances down to abnormalities in the level determinations, but the Astronomer Royal found it difficult to accept this suggestion. It appears from Mr. Banerji's letter that he has missed the earlier discussion.
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CROMMELIN, A. Vernier Wireless Time-signals. Nature 115, 912 (1925). https://doi.org/10.1038/115912b0
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DOI: https://doi.org/10.1038/115912b0
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