Program > 100th Anniversary Event from Eguchi’s Electret
100 years from Mototaro Eguchi’s Carnauba-wax Electret
Monday September 1 2025
| 15:20-15:30 | Opening |
| 15:30-15:50 | Yuji Suzuki (University of Tokyo) A Short History of Mototaro Eguchi |
| 15:50-16:10 | Yoshinobu Yasuno (Kobayashi Institute of Physical Research) Surface Potential Measurement of Eguchi’s Electret in 2024 |
| 16:10-16:30 | Hiroto Kono (National Museum of Nature and Science, Japan) Mototaro Eguchi and Physics in Early 20th-Century Japan |
| 16:30-16:50 | Reimund Gerhardt (University of Potsdam) Early Electret Research after Eguchi's Seminal Work |
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Mototaro Eguchi |
Eguchi’s wax electret (Diameter ~200 mm) |
Drawing of thermal charging system in Eguchi’s PhD thesis (1925) Tokyo Imperial University |
Ref: Mototaro Eguchi (1925), “On the permanent electret” The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, 49:289, 178-192, DOI: 10.1080/14786442508634594 |
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