Ну Google знает https://www.google.ru/#hl=ru&newwindow=1&tbo=d&sclient=psy-ab&q=%D0%9D%D0%B0+%D0%BE%D0%B4%D0%BD%D0%BE%D0%B9+%D1%83%D0%BB%D0%B8%D1%86%D0%B5+%D0%BF%D0%BE%D0%B4%D1%80%D1%8F%D0%B4+%D1%81%D1%82%D0%BE%D1%8F%D1%82+%D0%BF%D1%8F%D1%82%D1%8C+%D0%B4%D0%BE%D0%BC%D0%BE%D0%B2%2C+%D0%BA%D0%B0%D0%B6%D0%B4%D1%8B%D0%B9+%E2%80%94+%D1%81%D0%B2%D0%BE%D0%B5%D0%B3%D0%BE+%D1%86%D0%B2%D0%B5%D1%82%D0%B0&oq=%D0%9D%D0%B0+%D0%BE%D0%B4%D0%BD%D0%BE%D0%B9+%D1%83%D0%BB%D0%B8%D1%86%D0%B5+%D0%BF%D0%BE%D0%B4%D1%80%D1%8F%D0%B4+%D1%81%D1%82%D0%BE%D1%8F%D1%82+%D0%BF%D1%8F%D1%82%D1%8C+%D0%B4%D0%BE%D0%BC%D0%BE%D0%B2%2C+%D0%BA%D0%B0%D0%B6%D0%B4%D1%8B%D0%B9+%E2%80%94+%D1%81%D0%B2%D0%BE%D0%B5%D0%B3%D0%BE+%D1%86%D0%B2%D0%B5%D1%82%D0%B0&gs_l=hp.3..0l2.2532.2532.0.4814.1.1.0.0.0.0.90.90.1.1.0...0.0...1c.2.91IDQ0h3_Yw&pbx=1&bav=on.2,or.r_gc.r_pw.r_cp.r_qf.&bvm=bv.1355534169,d.bGE&fp=923803020b4f6561&bpcl=40096503&biw=1600&bih=761А своими мозгами не додумались погуглить? А еще загадки Эйнштейна собрались решать ))