透明人間は実在できる？空気の重さはどれくらい？氷が手にくっつくのはなぜ？身近な話題を入り口に楽しく物理がわかる一冊。
Faceboo auth is required to view user page.
If you have logged in since, it's automatically executed. If first time, Facebook auth login page will be shown, after your authorization, you can access user page.
