Nyob rau lub xyoo pua 21st, tib neeg muaj tus cwj pwm tsis tshua nyiam rau lawv tus kheej txoj kev noj qab haus huv: qee tus nyiam nyeem cov khoom sib xyaw ua ke ob zaug, saib cov khoom tshuaj xyuas, thiab pom qhov kev pom zoo ntawm tus kws tshaj lij txog cov chaw tsim khoom los ntawm saum toj no. Kwv yees nyob rau xyoo pua kawg, kev xav tau tsom mus rau qhov ua tau zoo ntawm cov khoom lag luam, thiab cov poj koob yawm txwv ntawm cov neeg lag luam niaj hnub no tau yooj yim ntxias cov neeg siv khoom rau hauv kev hloov tshiab. Rambler qhia yuav ua li cas ib qho ntawm txoj kev nrhav nrog cov pa hluav taws xob txhaws tau kov yeej cov poj niam nrog nws lub zog.
Xyoo 1920 thiab 1930, cov khoom lag luam nrog cov khoom siv hluav taws xob tau nyob ntawm nthwv ntawm qhov muaj koob npe nrov. Yog li, coj kom zoo dua ntawm qhov teeb meem no, lub hom ntawm cov tshuaj pleev ib ce Tho-Radia, uas tau tshwm sim xyoo 1932, tau tawm mus.
Kelly michals
Qhov kev tshawb pom ntawm cov radium tau tshwm sim xyoo 1898 los ntawm Pierre thiab Marie Curie; tau ntev ntev tsis muaj leej twg paub txog qhov tsis zoo ntawm lub keeb hauv lub cev. Xyoo 1920, nws ntseeg tau tias cov khoom muaj cov khoom siv los tiv thaiv kev laus, uas yog vim li cas nws ntxiv rau chocolate, tshuaj txhuam hniav, luam yeeb thiab txawm tias hnab looj.
Fabkis hom tau dhau los ua cov khoom lag luam tshaj tawm los ntawm kev siv tshuaj pleev xim rau hluav taws xob. 100 grams ntawm Tho-Radia cream suav nrog 0.5 grams ntawm thorium chloride thiab 0.25 milligrams ntawm radium bromide. Kev ntxim nyiam ntawm cov tuam txhab cov khoom tau lees paub los ntawm Dr. Alfred Curie, uas ua haujlwm rau lub hom. Nws lub npe tau siv rau kev tshaj tawm xov xwm ntawm lub hom, uas tam sim ntawd xa cov neeg siv khoom mus rau cov npe nrov ntawm radium.
Lub tuam txhab ua tiav kev lag luam hauv xov tooj cua kom txog thaum Lub Kaum Ib Hlis 9, 1937, thaum Fabkis txoj cai dhau los hloov kho txoj cai kev lag luam tshuaj lom, rau cov uas thorium thiab radium tau sib npaug. Tho-Radia tau cuam tshuam tam sim ntawd, tshem txhua yam txwv tsis pub los ntawm cov npe ntawm cov khoom lag luam, thiab lub npe tseem nyob txog xyoo 1962.
