THE WORK OF BOSE,JAGADIS,CHANDRA - 100 YEARS OF MILLIMETER-WAVE RESEARCH

Just 100 years ago, J, C, Bose described to the Royal Institution, Lon don, U,K,, his research carried out in Calcutta, India, of millimeter wavelengths, He used waveguides, horn antennas, dielectric lenses, var ious polarizers, and even semiconductors at frequencies as high as 60 GHz, Much of his original equipment is still in existence, currently a t the Bose Institute, Calcutta, India, Some concepts from his original 1897 papers have been incorporated into a new 1.3-mm multibeam receiv er now in use on the National Radio Astronomy Observatory (NRAO) 12-m telescope.