{"id":3891,"date":"2015-03-19T18:38:13","date_gmt":"2015-03-19T09:38:13","guid":{"rendered":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/?p=3891"},"modified":"2015-03-19T18:38:13","modified_gmt":"2015-03-19T09:38:13","slug":"%e4%ba%8c%e9%96%93%e7%80%ac%e6%95%8f%e5%8f%b2%e3%80%8c%e6%99%82%e9%96%93%e6%97%85%e8%a1%8c%e3%81%af%e5%8f%af%e8%83%bd%e3%81%8b%e3%80%8d","status":"publish","type":"post","link":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/?p=3891","title":{"rendered":"\u4e8c\u9593\u702c\u654f\u53f2\u300c\u6642\u9593\u65c5\u884c\u306f\u53ef\u80fd\u304b\u300d"},"content":{"rendered":"

タイムマシンの話ということなのですが，エンジニアリング・メカニカルな話はゼロです．ですから，タイムマシンとは言わず「時間旅行…」というタイトルにしているのだと思います．<\/p>\n

ひとことで言えば，今日的な物理学に照らして、時間旅行が可能だとしたら、ワームホールを利用することになるが、ワームホールの性質や，エントロピー増大の観点からダメでしょうというものです。<\/p>\n

高校生以上で，物理に興味のある人なら読める本だと思います．また，特別つまらないというものではありませんが，前述の様に，具体的な話がありません．<\/p>\n

まあ，タイムマシンとはそれだけのものなのかも知れませんが，「錬金術」<\/a>のように，タイムマシンを研究・開発した山師たちのエセ科学史的ものがあれば，おもしろかったかもしれません．\"二間瀬敏史_時間旅行は可能か\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

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