0383名無しさん脚2019/02/18(月) 16:26:54.71ID:otL96nqH 都合の良い物忘れは痴呆老人と政治家の特権 0384名無しさん脚2019/02/18(月) 17:17:05.65ID:+jd8rAGR>>380 あれ? その英語版 wikiを検索してみると >Lenses with glass elements artificially "single-coated" by vacuum deposition of a very thin layer > (approximately 130-140 nanometers) of magnesium or calcium fluoride to suppress surface >reflections were invented by Alexander Smakula working for Zeiss in 1935 and first sold in 1939.