Cov txheej txheem:
- Khoom siv
- Kauj Ruam 1: Npaj Cov Khoom Siv thiab Ua Cov Cells
- Kauj Ruam 2: Txhim Kho 3 Lub Roj Teeb hauv Kab
- Kauj Ruam 3: Txuas lub LED thiab Cia Lub Teeb
Video: Hluav Taws Xob & Teeb Los Ntawm Txiv qaub: 3 Kauj Ruam
2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:26
Tsuas yog ntau dua 200 xyoo dhau los tus kws tshawb fawb Italian Alessandro Volta tau tsim thawj lub roj teeb tseeb. Hauv qhov kev sim tshawb fawb hauv chav kawm no peb tuaj yeem rov tsim lub roj teeb zoo sib xws uas Volta tau tsim los siv yam tsis muaj ntau tshaj li txiv qaub thiab ob daim hlau. Nws muaj zog txaus los teeb lub LED, peb yeej tsim lub teeb los ntawm txiv qaub!
Los ntawm txoj kev… Volta lub roj teeb siv tooj liab, zinc thiab daim ntaub ntub dej hauv ntsev. Hauv peb qhov kev sim peb yuav siv tooj liab, magnesium thiab txiv qaub tab sis txoj kev xav zoo ib yam, peb tab tom siv tshuaj lom tshuaj los ua hluav taws xob.
Txoj haujlwm no yog npaj rau cov tub ntxhais kawm hnub nyoog 10-15 xyoos (Asmeskas qib 5-9). Cov tub ntxhais kawm laus yuav tsum muaj peev xwm ua tiav txoj haujlwm yam tsis muaj kev pab thiab ua haujlwm vim li cas lub Circuit Court tsis ua haujlwm (piv txwv li kev sib txuas tsis zoo ntawm cov txiv qaub thiab lwm yam).
Txoj haujlwm zoo tshaj plaws rau Kev Kawm Physics lossis General Science tab sis tseem tuaj yeem txuas ntxiv mus rau chav kawm IT. Nws yuav ua rau koj cov tub ntxhais kawm xav txog qhov twg lawv lub xov tooj ntawm tes tau txais lawv lub zog los ntawm. Hauv chav kawm qhia tias lub roj teeb siv tshuaj lom neeg los tsim hluav taws xob.
Khoom siv
- Ib nrab txiv qaub txiav rau hauv 3 ntu (piv txwv li 3 x 1/6's ntawm txiv qaub)
- Qee cov tooj liab tooj liab (kwv yees li 12 "(20cm) tag nrho) - qhov no yog xaim siv hauv koj lub qhov hluav taws xob hauv tsev. Yog tias koj paub tus kws hluav taws xob lawv paub tseeb tias muaj ntau qhov kev txiav tawm uas koj tuaj yeem siv tau. Txwv tsis pub nws muaj nyob hauv txhua lub khw muag khoom kho vajtse.
- Qee qhov magnesium ribbon (kwv yees li 3 "(10cm) tag nrho) - qhov no muaj online nyob ib puag ncig $ 3 rau ib mev (1m). Yog tias koj tsis tuaj yeem tau txais nws ces" galvanized "cov rau tes kuj tseem ua haujlwm (tab sis tsis zoo), cov no yog ntsia hlau npog nrog zinc, cov khw muag khoom kho vajtse yuav muaj lawv. Lawv zoo li grey thiab npub los saib (piv txwv li tsis ci).
- Ib qho LED (ib txwm 3v LED), zam Blue vim tias qee zaum lawv xav tau lub zog ntau dua los teeb lawv.
Kauj Ruam 1: Npaj Cov Khoom Siv thiab Ua Cov Cells
Nqa 1/2 txiv qaub thiab txiav rau 3 ntu raws li qhia hauv daim duab
Tom ntej txiav 2 daim tooj liab hlau ntev txog 1 "Ntev. Nco ntsoov tias tsis muaj roj hmab tiv thaiv ib puag ncig txoj hlua, nws yuav tsum yog" tooj liab "xim:-)
Thaum kawg 3 daim ntawm magnesium ribbon txog 1 ntev (nws yooj yim los txiav nrog txiab)
Peb tab tom yuav tsim 3 lub roj teeb me me (lossis "cell"). Txhua lub roj teeb muaj ntu ntu txiv qaub, lub dav hlau tooj liab thiab lub dav hlau magnesium.
Vim li cas peb thiaj xav tau 3 lub roj teeb uas koj nug? Zoo txhua lub roj teeb yuav tsim txog 1 volt ntawm hluav taws xob, tab sis LED xav tau ib ncig ntawm 3 volt ntawm hluav taws xob los ua haujlwm. Yog li yog tias peb xaim 3 lub roj teeb ua ke peb yuav muaj 3 volts, nws yuav tsum yog lub teeb pom kev zoo tshaj plaws.
Kauj Ruam 2: Txhim Kho 3 Lub Roj Teeb hauv Kab
Yog li peb muaj 3 lub roj teeb, tam sim no peb yuav tsum txuas lawv uake.
Dab tsi tseem ceeb ntawm theem no yog qhov tooj liab dav hlau los ntawm ib lub roj teeb txuas rau lub dav hlau magnesium ntawm lub roj teeb tom ntej. Qhov yooj yim tshaj plaws los ua qhov no yog khoov cov xaim tooj liab kom nws nyem rau ntawm cov magnesium kom ua kom muaj kev sib txuas.
Yog tias koj yuam kev txuas tooj liab rau tooj liab lossis magnesium rau magnesium ntawm txhua lub roj teeb lub roj teeb yuav ib txwm tso tseg ib leeg tawm, nws zoo li tso ib lub roj teeb rau hauv koj lub TV chaw taws teeb tswj hauv qhov tsis raug puag ncig, cov chaw taws teeb tsis ua haujlwm.
Yog li tam sim no peb muaj 3 lub roj teeb uake.
Kauj Ruam 3: Txuas lub LED thiab Cia Lub Teeb
Thaum kawg peb tuaj yeem txuas lub LED mus rau lub davhlau ya nyob twg sab laug ntawm lub roj teeb sab laug thiab lub davhlau ya nyob twg sab xis ntawm lub roj teeb raug kom lub tshuab hluav taws xob tau ua.
Tab sis tuav rau - LED tshwj xeeb heev ntawm qhov nws txuas nrog. Koj yuav pom tias ib txhais ceg ntawm LED ntev dua li lwm qhov, qhov no hu ua "Anode", qhov no xav tau txuas rau Qhov Zoo (+) sab ntawm lub roj teeb. Cov ceg luv hu ua "Cathode", qhov no xav tau txuas nrog rau qhov tsis zoo (-) sab ntawm lub roj teeb.
Tab sis qhov twg yog qhov zoo thiab uas yog lub davhlau ya nyob twg tsis zoo ntawm cov roj teeb txiv qaub?
….. Cov tooj liab yog qhov zoo (+), yog li txuas cov ceg ntev ntawm LED mus rau tooj liab hlau thiab txuas txuas luv luv ntawm LED mus rau lub dav hlau magnesium.
Thiab nyob zoo presto LED yuav tsum teeb. Yog tias koj muab cov txiv qaub ib nyuag nyem koj yuav pom LED ci ci dua li cov kua txiv ntau dua yuav tso tawm ua qhov txuas zoo dua rau lub dav hlau.
Yog li dab tsi yog kev tshawb fawb tom qab cov khawv koob no?
Zoo cov tshuaj tiv thaiv kab mob tau tshwm sim nruab nrab ntawm ob lub hlau sib txawv (hu ua "electrodes"), kua txiv qaub pab hauv cov tshuaj tiv thaiv (nws hu ua "electrolyte"). Thaum cov tshuaj tiv thaiv siv qee qhov ntxiv "hluav taws xob" tau tsim uas ntws raws qhov Circuit Court mus rau hauv LED. LED tom qab ntawd hloov cov hluav taws xob no mus rau hauv Lub Teeb.
Saib dab tsi tshwm sim rau lub davhlau ya nyob twg yog tias koj tso lub LED txuas rau ob peb teev - Kuv ntshai koj tsis tau tsim lub roj teeb uas yuav nyob mus ib txhis!
Koj tseem tuaj yeem sim nrog tsuas yog 2 lub cell, LED yuav tsum pom tab sis yuav dimmer. Nrog tsuas yog ib lub xov tooj kom ntseeg tau tias qhov hluav taws xob yuav qis dhau los ua kom pom lub LED tab sis mus tom ntej thiab sim.
Cov roj teeb tau dhau los ua qhov tseem ceeb ntxiv rau lub zog peb lub zog siv hluav taws xob & tsheb hluav taws xob, chav kawm no qhia tau tias cov cuab yeej siv roj teeb tau dhau los nyob rau 200 xyoo dhau los tab sis tseem muaj chaw txaus rau kev txhim kho … tej zaum tsis ntev koj lub xov tooj txawb yuav tsuas yog xav tau them ib xyoos ib zaug!
Yog tias koj nrhiav tsis tau magnesium ribbon:
Thaum kawg, koj yog tias koj tsis muaj magnesium koj tseem tuaj yeem sim qhov kev sim siv Zinc ib yam li Alessandro Volta tau ua dua magnesium (qee cov zinc plated (hu ua "galvanized") ntsia hlau tuaj yeem siv tau) tab sis koj yuav xav siv ntau dua 3 lub cell txij li Zinc tsuas yog tsim tawm txog 0.9 volts ib lub xov tooj sib piv rau ntau dua 1 volt nrog cov magnesium.
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