Мыльная вода

14-January-2014 Tuesday
I couldn’t google the answer to a question that had been tormenting me for a long time, maybe there is a league that knows the answer?

r2rufa

 

Read

Question Вопрос, Мыльная вода Мыльная вода Surface tension Мыльная вода, Поверхностное натяжение