Keywords: ODWERDG 4.jpg en Diagram in paper On the Determination of the Wave-length of Electric Radiation by Diffraction Grating 1896 http //rspl royalsocietypublishing org/content/60/359-367/167 full pdf+html w Jagadish Chandra Bose Custom license marker 2014 09 09 PD-scan Uploaded with UploadWizard J C Bose Radio Research |