Termos, i\u00e7 i\u00e7e ge\u00e7mi\u015f iki duvar ve aralar\u0131ndaki vakum sayesinde \u00e7al\u0131\u015f\u0131r. Vakumda \u0131s\u0131y\u0131 ta\u015f\u0131yacak hava neredeyse kalmad\u0131\u011f\u0131 i\u00e7in iletim ve ta\u015f\u0131n\u0131m b\u00fcy\u00fck \u00f6l\u00e7\u00fcde durur; duvarlardaki parlak, g\u00fcm\u00fc\u015f renkli kaplama ise \u0131\u015f\u0131n\u0131m\u0131 geri yans\u0131t\u0131r. Bu y\u00fczden s\u0131cak i\u00e7ecek s\u0131cak, so\u011fuk i\u00e7ecek so\u011fuk kal\u0131r. Is\u0131n\u0131n en kolay ka\u00e7t\u0131\u011f\u0131 yerler, iki duvar\u0131n birle\u015fti\u011fi boyun ve kapakt\u0131r.<\/p>\n
K\u0131\u015f sabah\u0131 doldurulan kahvenin \u00f6\u011flene kadar s\u0131cak kalmas\u0131, yaz\u0131n buzlu suyun ak\u015fama kadar serin durmas\u0131 bize s\u0131radan gelir. Arkas\u0131nda ise \u0131s\u0131n\u0131n \u00fc\u00e7 ka\u00e7\u0131\u015f yolunu ayn\u0131 anda kapatan, laboratuvardan \u00e7\u0131km\u0131\u015f bir bulu\u015f var. Bu yaz\u0131da termosun nas\u0131l icat edildi\u011fini, termosun \u00e7al\u0131\u015fma prensibini ve vakum yal\u0131t\u0131m\u0131n neden bu kadar etkili oldu\u011funu anlat\u0131yor, ayn\u0131 fizi\u011fin binalardaki kar\u015f\u0131l\u0131\u011f\u0131n\u0131 g\u00f6steriyoruz. Bir termos, asl\u0131nda k\u00fc\u00e7\u00fck \u00f6l\u00e7ekli bir yal\u0131t\u0131m dersidir.<\/p>\n