Abstract
THE results of the expeditions from Canada and the Lick Observatory to Wallal, Western Australia, for the solar eclipse of last September have now come to hand; and both report in favour of the Einstein shift of starlight. In each case the number of stars measured was very large-exceeding eighty- the magnitudes being between the seventh and the tenth. From this it is evident that the exposures were comparatively long, and consequently there would be considerable extension of the corona on the plates, which would obliterate the stars nearest the sun. The measures, however, were sufficiently exact to give a decisive result using the more distant stars. Profs. Campbell and Trumpler measured all their plates in duplicate; the values for the shift at the limb of the sun deduced from the individual plates ranged from 1.59″ to 1.86″, the mean of all being 1.74″, which is only 0.01″ less than Einstein's predicted value.
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C., A. Einstein and the Recent Eclipse. Nature 111, 541 (1923). https://doi.org/10.1038/111541a0
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DOI: https://doi.org/10.1038/111541a0