The 8th scientific workshop presented by the 19th URSI-C in Japan 1.    Convener: Prof. Atsushi Sanada, Yamaguchi University. 2.    Date/time: 13:00 -16:50/19:30-20:30, November 22, 2005 3.    Venue: 101 seminar room, REC Building, Faculty of Science and Technology, Ryukoku University (Seta Campus, Otsu, Shiga, Japan) 4.    Registration fee: Free 5.    Listed attendees: 23 persons 6.    Local arrangement: Professor Awai's Lab. and Professor. Zhang's Lab. 7.    Session title: “Radio Waves and Epsilon, Mu, and Sigma” 8.    Presentations: 60 min including Q&A for each speaker (a) “History and Perspectives of Microwave Dielectric Materials”         Speaker: Dr. Hiroshi TAMURA, Murata Manufacturing Co., Ltd. (Canceled) (b) “Electromagnetic Waves and Mu”         Speaker: Professor Ikuo AWAI, Ryukoku University (c) “Technical Trends and Novel Applications of Microwave Absorbers”        Speaker: Professor Osamu HASHIMOTO, Aoyama Gakuin University Rump Session (Venue: Houkou-So, Nagahama) (d) “Theory and Practice of Left-Handed Materials”        Speaker: Professor Atsushi SANADA, Yamaguchi University 9.    Banquet         Venue: Houkou-So, Nagahama, Shiga, Japan         Attendees: 16 persons 10.    The steering committee meeting took place from 8:50 to 9:50 on September 23, 2005. 11.    Concluding Remarks This workshop has covered a wide range of topics from fundamentals to applications of microwave materials by active researchers in the field. Professor Awai has presented an intuitive explanation of physics and characteristics of microwave ferrimagnetic materials and Professor Hashimoto has also presented novel trends and examples of microwave absorber applications, which is quite interesting and informative for audience. A talk on a hot topic on physics and properties of left-handed materials has been given by myself in the rump session with more than one hour extension, resulting in precious and fruitful discussions. It is unfortunate that the first talk on microwave dielectric materials by Dr. Tamura has been canceled. By courtesy of Professors Awai and Zhang, a one day Biwako Lake tour program has been took place the next day with six attendees. It has gone smoothly through the day and has helped for exchanging information and mutual friendship.