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单词 dawes' limit
释义 dawes' limit
\ˈdȯz(ə̇z)-\ noun
Usage: usually capitalized D
Etymology: after William R. Dawes died 1868 English astronomer
: an approximate value of the resolving power of a telescope based on the theoretical size of the spurious disk being equal in seconds of arc to 4.56 divided by the aperture of the telescope expressed in inches
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