Optical tunneling is a fascinating phenomenon. Some of the early optical tunneling experiments were conducted in the microwave range. The double-prism experiment of Sir J. C. Bose is the earliest among them. The theory of optical tunneling, based on Maxwell equations in electrodynamics, was developed a few years after Bose's study. As far as our knowledge goes, there is no paper studying the conformity of Bose's findings with the theory. In the present work, we have made a qualitative and quantitative investigation of the experimental measurements of Bose by comparing his results with the theoretical predictions and find a remarkably good agreement. [ABSTRACT FROM AUTHOR]