Xa bekhetha imicu yokukhanya ye-LED, abantu abaninzi bathambekele ekugxileni ekukhanyeni, ubushushu bombala, kunye nokulinganiswa kokungena kwamanzi, kodwa badla ngokungayinaki ipharamitha ebalulekileyo - isalathisi sokuboniswa kombala (i-CRI). Abanye abantu bacinga ukuba "lo gama nje inokukhupha ukukhanya kwaye ikhanya ngokwaneleyo, ilungile ngokwaneleyo",...
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