It was in 2008 that the Communication Museum was opened at the University of Electro-Communications. At that time was edited a booklet for students to know what kinds of researches were executed in the early days just after the end of last war. This book is compiled for general readers based on the booklet. Naoya Nakagawa Professor emeritus of the University of Electro-Communications, Tokyo, Japan. Specialist of Organic Chemistry and NMR 1927 Born in Seoul, Korea 1948 Graduated from University of Tokyo 1959- University of Nagoya 1960- University of Electro-Communications 2008- UEC Communication Museum Curator