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Keywords: On the Production of a 'Dark Cross' in the Field of Electro-magnetic Radiation Fig. 2.png en Diagram in Research paper on radio research 1898 http //rspl royalsocietypublishing org/content/63/389-400/152 full pdf+html w Jagadish Chandra Bose other versions PD-old-70-1923 Uploaded with UploadWizard On the Production of a 'Dark Cross' in the Field of Electro-magnetic Radiation |