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DLMF:33.22#Ex9 - MaRDI portal

DLMF:33.22#Ex9 (Q10385)

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DLMF:33.22#Ex9
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    κ = i Z 1 Z 2 α c ( m / ( 2 E ) ) 1 / 2 . 𝜅 imaginary-unit subscript 𝑍 1 subscript 𝑍 2 fine-structure-constant speed-of-light superscript 𝑚 2 𝐸 1 2 {\displaystyle{\displaystyle\kappa=\mathrm{i}Z_{1}Z_{2}\alpha c(m/(2E))^{1/2}.}}
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