Cov menyuam cov tsev yuav tsum tsis txhob pua pua plag nrog yas. Qee cov khoom lag luam ua npuas dej ntawm kev ua lag luam, xws li hauv pem teb sib txuas, yuav tso ntau cov orgatile cov orgzle cov lus teb, uas yuav cuam tshuam rau menyuam yaus kev noj qab haus huv. Tsis txhob nteg marble lossis pobzeb, uas yuav tso cov pa phem radon. Radon ntom yog loj.
Nws yog feem ntau tau ncua hauv qab ib 'meter' ntawm av, thiab qis dua ntawm remonor ntawm radon, muaj kev phom sij ntau rau tus menyuam uas nkag mus. Tab sis qee tsev neeg ntshai tus menyuam poob, thaj chaw loj uas muaj cov ntaub pua plag qias tsis yog science. Tshwj xeeb tshaj yog nyob rau hauv lub caij ntuj sov noo, pam vov pam vov yog cov mites, uas tuaj yeem ua rau cov menyuam yaus muaj cov pa hluav taws xob ua kom txhua yam menyuam yaus ua xua.
Ib qho ntxiv, cov menyuam hauv pem teb ntawm chav tsev, tseem muaj qee cov ntsiab lus: Cov khoom siv yooj yim, vim tias muaj kev sib tsoo ntawm cov pob qij txha ntawm cov khoom me me tuaj yeem dhau los ua kev hem thawj rau menyuam yaus. Nyob rau tib lub sijhawm, cov grooves thiab crevice kuj tseem tuaj yeem ua rau me ntsis rau menyuam yaus. Thib ob, cov khoom hauv av yog qhov nyuaj heev thiab ntxuav kom huv thiab yooj yim, tab sis nws tsis xis rau menyuam yaus mus ncig. Yog li ntawd, hauv pem teb yuav tsum yoog tau yooj yim, thiab kev tawm tsam nplua kev ua tau zoo dua. Thaum kawg, tsis txhob kis yas yas pem teb. Qee cov khoom lag luam ua npuas dej ntawm kev ua lag luam, xws li cov khoom siv volatile, yuav cuam tshuam ntau cov tshuaj orgatile, uas yuav cuam tshuam rau kev noj qab haus huv ntawm cov menyuam.
