Ndi kupita patsogolo ndi chitukuko cha anthu, mphamvu ndi zochitika zachilengedwe zakhala zikuyang'ana kwambiri padziko lapansi. Kusunga mphamvu ndi kuteteza chilengedwe kwakhala njira yayikulu yopititsira patsogolo chitukuko cha anthu. M'moyo watsiku ndi tsiku wa anthu, kufunikira kwa magetsi owunikira kumapangitsa gawo lalikulu kwambiri la mphamvu zonse zomwe zimagwiritsidwa ntchito, koma njira zowunikira zakale zomwe zilipo zili ndi zolakwika monga kugwiritsa ntchito mphamvu zambiri, moyo waufupi wautumiki, kusinthika kocheperako komanso kuwonongeka kwa chilengedwe, zomwe sizili. mogwirizana ndi cholinga chopulumutsa mphamvu ndi kuteteza chilengedwe m'madera amasiku ano, Choncho, njira yatsopano yowunikira yomwe imakwaniritsa zofunikira za chitukuko cha anthu ikufunika kuti ilowe m'malo mwa njira yowunikira miyambo.

Kupyolera mu kuyesetsa kosalekeza kwa ofufuza, njira yowunikira yobiriwira yokhala ndi moyo wautali wautumiki, kutembenuka kwakukulu komanso kuwononga chilengedwe chochepa, chomwe ndi semiconductor white light emitting diode (WLED), zakonzedwa. Poyerekeza ndi njira yowunikira yachikhalidwe, WLED ili ndi ubwino wochita bwino kwambiri, palibe kuipitsidwa kwa mercury, kutulutsa mpweya wochepa, moyo wautali wautumiki, voliyumu yaying'ono ndi kupulumutsa mphamvu, Izi zimapangitsa kuti zigwiritsidwe ntchito kwambiri pamayendedwe, kuwonetsera kuyatsa, zipangizo zamankhwala ndi zamagetsi.

Nthawi yomweyo,LEDchazindikirika monga gwero la kuwala kwatsopano lamtengo wapatali kwambiri m'zaka za zana la 21. Pakuwunika komweku, kugwiritsa ntchito mphamvu kwa WLED ndikofanana ndi 50% ya nyali za fulorosenti ndi 20% ya nyali za incandescent. Pakadali pano, kugwiritsa ntchito mphamvu zowunikira padziko lonse lapansi kumagwiritsa ntchito pafupifupi 13% yamagetsi onse padziko lapansi. Ngati WLED idzagwiritsidwa ntchito m'malo mwa gwero lounikira padziko lonse lapansi, mphamvu yogwiritsira ntchito mphamvu idzachepetsedwa ndi theka, ndi zotsatira zopulumutsa mphamvu komanso phindu lachuma.

Pakali pano, white light emitting diode (WLED), yomwe imadziwika kuti chipangizo chounikira m'badwo wachinayi, yakopa chidwi kwambiri chifukwa cha ntchito zake zabwino kwambiri. Anthu alimbitsa pang'onopang'ono kafukufuku pa LED yoyera, ndipo zida zake zimagwiritsidwa ntchito kwambiri m'madera ambiri monga kuwonetsera ndi kuyatsa.

Mu 1993, ukadaulo wa Gan blue light emitting diode (LED) udachita bwino kwa nthawi yoyamba, zomwe zidalimbikitsa kukula kwa LED. Poyamba, ochita kafukufuku adagwiritsa ntchito Gan ngati gwero la kuwala kwa buluu ndipo adazindikira kuwala koyera kwa imodzi yomwe imatsogoleredwa pogwiritsa ntchito njira yotembenuza phosphor, yomwe imathandizira kuthamanga kwa LED kulowa m'munda wowunikira.

Kugwiritsa ntchito kwakukulu kwa WLED kuli pagawo la kuyatsa kwapakhomo, koma malinga ndi momwe kafukufuku wakhalira pano, WLED idakali ndi mavuto akulu. Kuti tipangitse WLED kulowa m'moyo wathu posachedwa, tifunika kuwongolera nthawi zonse ndikuwongolera magwiridwe antchito ake, kutulutsa mitundu ndi moyo wautumiki. Ngakhale kuti gwero lamakono la kuwala kwa LED silingalowe m'malo mwa kuwala kwachikhalidwe komwe anthu amagwiritsa ntchito, ndi chitukuko cha sayansi ndi zamakono, nyali za LED zidzatchuka kwambiri.