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Scientific American

October 26, 1912

1 min read

A Triple Mirror for Secret Signaling

Reflected Beam that is Invisible Out of the Path of the Beam

By C. H. Claudy

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This article was originally published with the title “A Triple Mirror for Secret Signaling” in Scientific American Magazine Vol. 107 No. 17 (October 1912), p. 346
doi:10.1038/scientificamerican10261912-346

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