Rau ntau tshaj ib xyoo caum, noob neej tau sib cav txog kev cuam tshuam ntawm lub xov tooj txawb ntawm kev noj qab haus huv. Txij li thaum cuaj caum, cov kev tshawb nrhiav tau tshwm sim los ntawm qhov kev siv xov tooj ua rau muaj kev noj qab haus huv hloov thiab qhov kev tsis haum ntawm cov kev tshawb fawb, uas yog npaj los ntawm tib cov neeg kawm txawj ntse. Txog rau hnub tim, tsis muaj cov ntaub ntawv kawg uas yuav pom zoo lossis tsis pom zoo rau kev tsim txom los ntawm kev siv lub xov tooj ntawm tes.
Thaum lub sij hawm ntawd nws yog qhov tsim muaj tseeb tias tej yam raug mob ntawm cov xov tooj ntawm tes yog tseem tuaj. Yeej nws muaj feem xyuam rau lub tshuab hluav taws xob uas siv hluav taws xob hauv xov hluav taws xob ua ke, thiab lwm yam khoom siv uas ua haujlwm ntawm hluav taws xob - lub TV, lub tub yees, lub qhov cub microwave thiab cov zoo li. Txawm li cas los xij, qhov tseeb yog lub xov tooj feem ntau sib cuam tshuam nrog peb lub taub hau, uas ua rau kom tsis muaj qhov tsis zoo ntawm daim teb no rau ntawm lub cev los ntawm qhov kev txiav txim ntawm qhov ntau. Raws li tej kev tshawb fawb, hom hluav taws xob no muaj teeb meem rau cov tib neeg, feem ntau vim hais tias cov teebmeem ntawm nws cov teebmeem yuav tsis tshwm sim rau lub sijhawm ntev, vim nws yog qhov nyuaj heev rau pom qhov tsis zoo rau lub koom haum xws li peb lub hlwb, uas ntau npaum li cas tib neeg lub cev.
Feem ntau, ib lub xov tooj txawb raug rau tsis yog lub taub hau ntawm ib tug neeg xwb, tab sis kuj yog tag nrho lub cev raws li ib tug tag nrho, vim hais tias feem ntau ntawm peb txhua tus muaj xov tooj nrog peb, qee lub sij hawm txawm hmo ntuj, ntshai tsis nco ib qho tseem ceeb. Yog li, vim qhov tseeb uas tom ntej no rau peb nyob ze qhov chaw ib txwm yog ib qho chaw ntxiv ntawm qhov hluav taws xob electromagnetic hluav taws xob, peb lub cev yog muaj kev phom sij ntxiv.
Qhov tseem ceeb tshaj plaws rau lub tshuab hluav taws xob electromagnetic ntawm lub xov tooj ntawm tes yog me nyuam. Vim hais tias lawv cov pob txha, nrog rau cov pob txha ntawm pob txha taub hau, cov thinner dua li cov pob txha ntawm cov pob txha taub hau ntawm cov laus, lawv tsis tshua yuav thaiv cov teeb meem tawg, thiab vim tus me (dua piv rau cov laus) SAR rau lawv tuaj yeem yuav ntau dua li xam.
SAR (uas yog qhov tshwj xeeb Absorption) yog qhov taw qhia txog hluav taws xob uas txiav txim siab lub zog ntawm lub tshav pob uas tawm hauv tib neeg lub cev rau hauv ib lub sijhawm sib npaug rau ib lim tiam. Nrog rau qhov ntsuas no, cov kws tshawb fawb tau ntsuas seb lub xov tooj txawb puas cuam tshuam rau ib tus neeg lub cev. Nws yog ntsuas hauv watts ib kilogram. Lub chaw pib rau qhov hluav taws xob electromagnetic yog ob lub watts ntawm ib kilogram.
Cov kws tshawb fawb ntawm European Union tau qhia tias hluav taws xob, uas yog hauv SAR qhov tseem ceeb ntawm 0.3 mus rau 2 watts ntawm ib kilogram, tuaj yeem ua rau lub DNA tseem quab yuam.
Cov kws tshawb fawb, tau tshawb xyuas ntau tshaj li kaum txhiab tus me nyuam, tau txiav txim siab tias siv xov tooj ntawm tes thaum lub cev xeeb tub yuav cuam tshuam kev noj qab haus huv ntawm tus me nyuam yav tom ntej.
Muaj kev paub zoo txog kev tshawb fawb ntawm Dr. J. Highland ntawm University of Warwick, Great Britain. Nws cav tias cov xov tooj ntawm tes tsis muaj kev ruaj ntseg, hauv particular lawv tuaj yeem ua rau mob pw, tsis nco thiab lwm yam teeb meem kev noj qab haus huv. Nws kuj hais tias qhov no cuam tshuam cov me nyuam ntau ntxiv, vim lawv lub cev tsis muaj zog tshaj li cov laus.
Tsis tas li ntawd, cov thawj coj ntawm European Parliament txoj kev tshawb fawb tau tshaj tawm qhia tias txhua lub teb chaws nyob hauv cov koomhaum pab neeg yaus tsis txwv kev siv xov tooj ntawm tes los ntawm cov neeg tsis tau muaj hnub nyoog qis tshaj. Raws li lawv tsab ntawv ceeb toom, kev siv xov tooj ntawm txoj kev sib txuas lus tuaj yeem cuam tshuam kev loj hlob ntawm tus menyuam, thiab tseem cuam tshuam nws cov kev soj ntsuam hauv tsev kawm ntawv. Nyob rau hauv cov kev tshawb fawb, kev tshwm sim uas tau muaj nyob rau hauv tsab ntawv ceeb toom, cov kws tshawb fawb los ntawm Warwick University, British Pawg ntawm Cov Neeg Ua Hauj Lwm Kev Txawj Ntse thiab Lub Koom Haum German lub Biophysics koom.
Nyob rau hauv UK, tseem muaj kev txiavtxim ntawm kev muag cov xov tooj ntawm tes rau cov tib neeg tsis tau muaj hnub nyoog qis qis. Tsis tas li ntawd, cov menyuam yaus hnub nyoog qis dua 8 xyoo tsis pub siv cov xov tooj ntawm tes.