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An Entity of Type : prov:Entity, within Data Space : webisa.webdatacommons.org associated with source dataset(s)

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  • P = ??? Pi = ??? [ 1 / ( ni ??? fi ) ] = ??? [ ?? i / ni ] ( i = 1 , ??? , N ) ( 1 ) where ?? is an operator that means the sum total related to an index i of sum, i is the number of an optical element, N is the total sum of optical elements, Pi is a component of an i-th optical element that contributes to the Petzval's sum, ni is the refractive index of the i-th optical element, fi is the focal l
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