via https://t.co/dCZvREV3Di “”中学生のとき音速340m/秒って聞いてもピンと来なかったから尋ねたら「1秒間でトイレットペーパー7つ巻き取るほどの速さ。ダブルなら14個」って言われてとりあえずすごいと思った”” https://t.co/94qJejSGW9



from Twitter https://twitter.com/itarunozaki

April 26, 2019 at 01:09AM
via IFTTT

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.