Kev thuam opalescence
Ze ntawm qhov tseem ceeb, lub teeb ci irradiated mus rau hauv nruab nrab yuav raug tawg ua kom tawg los ntawm qhov nruab nrab. Qhov tshwm sim no yog hu ua kev thuam opalescence. Polish tus kws kho mob Marian Smaurotus thawj zaug pom nyob rau xyoo 1908 tias kev teeb tsa ntawm qhov tseem ceeb opalescence yog qhov hloov ntawm nruab nrab ntom ntom, thiab nws tsis muab qhov sib thooj sib thooj. Ob xyoos tom qab, Einstein siv cov kev ntsuas ntawm lub cev sib txawv los tham txog ntom ntom hloov los ntawm cov qauv tsim ntawm qhov nruab nrab, yog li ua kom tau txais qhov sib npaug uas cuam tshuam, thiab siv cov kab zauv no los muab lwm txoj kev rau suav qhov Avogadro tsis tu ncua, qhov zoo siab yog qhov kev cuam tshuam ntawm qhov tseem ceeb opalescence. tuaj yeem piav qhia qhov tshwm sim ntawm xiav ntuj.