Watt yog ib qho ntawm lub zog. Lub npe thoob ntiaj teb ntawm watts yog W, thiab hauv Lavxias - "W". Tam sim no lub zog ntsuas qhov ntsuas no tau siv dav hauv ntau lub tshuab - los ntawm cov khoom siv hauv tsev mus rau cov txheej txheem kev ua haujlwm nyuaj.
History
Lub tsev watt tau muab npe tom qab James Watt, tus kws ua haujlwm Scottish uas tsim lub tshuab hluav taws xob, cov qauv uas nws hloov kho los ntawm Newcomen's invention.
Yog li, chav tsev watt tau txais los ntawm lub rooj sib tham zaum ob ntawm lub koom haum tshawb fawb hauv Great Britain hauv 1882. Ua ntej no, feem ntau lub zog suav siv qhov ntsuas "horsepower", ib chav metric uas sib npaug li ntawm 735 watts.
Watt raws li qhov ntau hauv physics
Txhawm rau nkag siab zoo dua qhov ntsuas hauv watts, koj yuav tsum tau txhuam hauv tsev kawm ntawv cov lus qhia physics thiab nco ntsoov lub ntsiab lus ntawm lub zog. Lub cev kom muaj nuj nqis uas siv chav tsev joule (J) hauv thoob ntiaj teb SI system yog hu ua lub zog. Nws yog siv raws li kev ntsuas dav dav ntawm kev ua tau zoo ntawm ntau yam txheej txheem thermal lossis kev cuam tshuam ntawm cov khoom thiab lwm yam tshwm sim,tshwm sim nrog teeb meem - hauv science, xwm, technology, thiab hais txog.
Qhov ntawd yog qhov ntsuas hauv watts - lub zog, uas txiav txim siab seb cov khoom siv sib txawv npaum li cas los yog tso tawm lub zog. Nws kuj xam qhov ceev ntawm nws kis los ntawm cov khoom thiab transformations ntawm ib daim ntawv mus rau lwm tus. Hauv lwm lo lus, lub zog, txhais hauv watts, sib npaug 1 units ntawm lub zog muab faib los ntawm 1 units ntawm lub sijhawm - thib ob:
1W=1J/1sec
Volts thiab watts
Qhov txawv ntawm qhov volt thiab watt yog dab tsi? Voltage yog xam nyob rau hauv volts. Piv txwv li, qhov voltage ntawm lub hwj chim qhov chaw - roj teeb, accumulator los yog network - yuav tsum sib npaug zos rau los yog me ntsis deviate (nyob rau hauv%) los ntawm lub voltage uas tau nruab rau hauv lub ntaus ntawv - lub teeb los yog complex electronics.
ntsuas li cas hauv watts? Cov lus teb ntawm no yog qhov tseeb - qhov no yog lub zog, uas tuaj yeem suav tau raws li kev siv lub zog, piv txwv li, thaum xaiv lub hwj - nws yuav ua kom sov sai dua, tab sis yuav siv hluav taws xob ntau dua. Los yog nrog lub zog tso zis, hais, tus hais lus lossis lub suab nrov, qhov ntau, qhov dav dav thiab lub suab nrov dua. Watt kuj qhia nyob rau hauv combustion engines - tsheb, maus taus, trimmers thiab lwm yam mechanisms. Txawm li cas los xij, rau cov cav no hauv lwm lub tebchaws, kev ntsuas "horsepower" feem ntau siv.
Cov khoom siv hluav taws xob
Lub zog ntawm cov khoom siv hauv tsev yog ntsuas hauv watts, uas feem ntau teev los ntawm cov chaw tsim khoom. Qee cov khoom siv, xws li teeb, tuaj yeem tsim kev txwvhwj chim, yog li ntawd nrog ib tug muaj zog incandescence ntawm lub cartridge, lawv tsis poob. Qhov ntawd yuav txwv lub sijhawm siv. Raws li txoj cai, cov teeb meem no tshwm sim nrog cov teeb ci incandescent. Hauv Tebchaws Europe, piv txwv li, lawv tau txwv kev siv cov teeb no vim lub zog siab.
LED teeb siv hluav taws xob tsawg dua, thaum lub teeb ci ntawm lub teeb no tsis zoo dua li cov teeb ci. Piv txwv li, nrog qhov nruab nrab ci ci ntawm 800 lumens, lub zog noj ntawm lub teeb ci, ntsuas hauv watts, yuav yog 60, thiab LED teeb - los ntawm 10 mus rau 15 watts, uas yog 4-6 zaug tsawg dua. Lub zog ntawm lub teeb fluorescent yog 13-15 watts. Yog li, txawm hais tias tus nqi siab dua, LED lossis fluorescent teeb pom kev zoo tau tshwm sim vim nws kav ntev dua thiab siv zog tsawg dua.
