Sundials tau siv los ntsuas sijhawm, raws li Lub Hnub, ntau txhiab xyoo. Cov cuab yeej yooj yim no tuaj yeem ua los ntawm tsis muaj dab tsi tab sis lub tiaj tus hu thiab gnomon ("tus pointer" uas cuam tshuam tus duab ntxoov ntxoo), tab sis tseem tuaj yeem ua kom nyuaj nyeem yog tias koj nyuam qhuav pib tawm. Los ntawm teeb tsa koj li sundial kom raug thiab ua tiav ob peb qhov kev xam yooj yim, koj tuaj yeem ua ke koj lub hnub qub rau lub sijhawm teev thiab paub teev tsis hais koj nyob qhov twg.
Cov kauj ruam
Ntu 1 ntawm 2: Taw Qhia Koj Lub Hnub Nyoog
Kauj Ruam 1. Muab koj lub sundial tso rau ntawm lub tiaj tiaj, kab rov tav
Lub hnub qub yuav tsuas ua haujlwm raug thaum nws nyob ntawm qhov chaw tiaj tiaj, zoo li hauv av, sawv ntsug, lossis lub rooj. Muab koj tus kheej tso rau hauv qhov chaw nyab xeeb uas nws yuav tsis tsoo lossis txav mus.
Kauj Ruam 2. Ua kom ntseeg tau tias koj lub hnub tuaj yuav nyob hauv tshav ntuj ncaj qha txhua hnub
Qhov no yuav zoo li pom tseeb, tab sis nws yog qhov tseem ceeb! Yog tias koj xav kom tuaj yeem nyeem koj lub hnub qub txij thaum kaj ntug mus txog tsaus ntuj, khaws nws tawm hauv qhov chaw qhib, tsis muaj chaw nyob qhov twg tshav ntuj tuaj yeem ncav cuag nws ntev li ntev tau.
Koj tuaj yeem pom tias qee qhov sundials tsuas yog ntsuas 12 teev, vim tias lawv yuav tsis ua haujlwm rau lub sijhawm uas lub hnub poob qis
Kauj Ruam 3. Taw tes rau sab qaum teb yog tias koj nyob rau sab qaum teb hemisphere
Siv lub ntsuas hluav taws xob lossis saib rau North Star thaum hmo ntuj kom pom sab qaum teb tseeb. Tom qab ntawd, tig lub ntsej muag ntawm koj lub hnub qub kom txog thaum lub gnomon, lossis tus pin ntawm lub hnub qub, yog taw ncaj nraim rau sab qaum teb.
Lub sijhawm 12:00 teev tav su cov ntawv sau ua ke nrog lub suab npe, yog li nws yuav taw tes rau sab qaum teb ib yam
Kauj Ruam 4. Lub ntsej muag gnomon sab qab teb yog tias koj nyob rau yav qab teb hemisphere
Yog tias koj nyob qis dua qhov sib npaug, koj yuav tsum tau taw qhia lub hnub nyoog ntawm koj lub hnub poob mus rau sab qab teb, tsis yog sab qaum teb. Koj tuaj yeem siv lub ntsuas hluav taws xob lossis saib rau Southern Cross constellation txhawm rau nrhiav qhov tseeb sab qab teb thiab kho koj li sundial raws li.
Txhawm rau nrhiav Southern Cross, nrhiav 4 lub hnub qub zoo li lub kite me. Qhov deb koj nyob rau sab qab teb, qhov siab dua nws yuav nyob saum ntuj
Kauj Ruam 5. Siv lub sundial ntsug yog tias koj nyob ntawm qhov kab rov tav
Lub kaum sab xis ntawm lub hnub ua rau nws nyuaj heev rau siv kab ke kab rov tav ib txwm ua raws kab zauv. Hloov chaw, siv lub hnub qub ntsug thiab ua raws cov lus qhia ntim khoom kom teeb tsa nws thiab taw tes rau gnomon kom raug.
Ntawm tus kab hluav taws xob, lub hnub nce raws txoj kab tav toj sab hnub tuaj thiab txav ncaj ncaj, tom qab ntawd teeb rau sab hnub poob. Yog tias koj siv kab rov tav sundial, duab ntxoov ntxoo yuav poob feem ntau sab hnub poob thaum sawv ntxov thiab feem ntau sab hnub tuaj thaum tav su, tsis txhob tig qeeb
Ntu 2 ntawm 2: Xam Sijhawm Sijhawm los ntawm Sundial
Kauj Ruam 1. Saib qhov twg kab duab ntxoov ntxoo poob ntawm koj lub hnub poob
Thaum koj tau teeb tsa koj lub sundial, ua tib zoo saib nws thaum nws ua duab ntxoov ntxoo hauv tshav ntuj. Nco tseg cov kab uas tus duab ntxoov ntxoo sab ntug kab nrog thiab siv nws los nyeem koj li sundial zoo li lub moos ib txwm.
Koj yuav pom kab lus sib txawv raws li koj lub hnub qub, tab sis nws yuav tsum tau muab faib ua ntu ntu los ntawm 5 feeb lossis 10 feeb yog li koj tuaj yeem tau txais qhov kwv yees raug
Kauj Ruam 2. Nrhiav qhov nruab nrab qhov ntev ntawm koj cheeb tsam sijhawm
Koj sundial tuaj yeem tawm mus txog ib teev piv rau lub sijhawm teev nyob ntawm koj qhov ntev. Txhawm rau kho qhov no, xub xam tawm pes tsawg teev koj nyob ua ntej lossis tom qab Greenwich Mean Time (GMT), uas yog ntawm 0 ° longitude. Rau txhua teev uas koj ua ntej, qhov chaw nruab nrab ntawm koj lub sijhawm yuav hloov los ntawm 15 ° sab hnub tuaj; rau txhua teev koj nyob tom qab, qhov chaw nruab nrab ntawm koj lub sijhawm yuav yog 15 ° sab hnub poob.
- Piv txwv, Pacific Standard Time (PST) yog 8 teev tom qab GMT. Sib npaug 8 teev los ntawm 15 ° muab rau koj 120, yog li PST qhov nruab nrab qhov ntev yog 120 ° Sab Hnub Poob.
- Koj tuaj yeem pom lub sijhawm GMT tam sim no los ntawm kev tshawb fawb online.
Kauj Ruam 3. Nrhiav qhov nrug nruab nrab ntawm | koj qhov ntev thiab nruab nrab ntawm koj cheeb tsam sijhawm
Koj tuaj yeem pom koj tus kheej qhov ntev los ntawm kev saib nws online lossis nrog GPS ntaus ntawv. Tom qab ntawd, xam qhov deb ntawm koj qhov ntev mus rau qhov nruab nrab ntev ntawm koj cheeb tsam sijhawm, thiab nco ntsoov seb koj nyob sab hnub tuaj lossis sab hnub poob ntawm nws.
Piv txwv li, Seattle nyob ntawm 122.3 ° Sab hnub poob txoj kab ke. Qhov nruab nrab qhov nruab nrab ntawm nws lub sijhawm thaj tsam (PST) yog 120 ° Sab Hnub Poob, yog li Seattle yog 2.3 ° deb ntawm nws
Kauj Ruam 4. Ntxiv lossis rho tawm 4 feeb rau txhua qib uas nyob deb ntawm qhov chaw
Tam sim no, siv koj qhov kev suav kom tau txais kev kwv yees tseeb ntawm lub sijhawm los ntawm koj lub hnub qub. Sib npaug qhov sib txawv ntawm koj qhov ntev thiab nruab nrab txoj kab nruab nrab los ntawm 4. Yog tias koj nyob sab hnub poob ntawm nruab nrab txoj kab nruab nrab, ntxiv koj cov lus teb rau lub sijhawm; yog tias koj nyob sab hnub tuaj, rho nws tawm.
- Hauv Seattle, piv txwv li, koj yuav muab 2.3 los ntawm 4 kom tau 9.2. Txij li Seattle yog sab hnub poob ntawm lub sijhawm nruab nrab qhov chaw, sundials hauv Seattle yog 9.2 feeb tom qab lub sijhawm teev, yog li koj yuav tsum ntxiv 9.2 feeb los ua kom lawv sib npaug.
- Yog tias koj lub hnub qub nyeem tias nws yog 1:40 teev tsaus ntuj hauv Seattle, tom qab ntawd, koj yuav ntxiv 9 feeb los kwv yees tias nws yog 1:49 teev tsaus ntuj.
- Vim li cas 4 feeb? Txij li thaj tsam sijhawm feem ntau yog 15 ° ntawm txoj kab ntev, lossis 1 teev ntev, koj tuaj yeem faib 60 feeb los ntawm 15 ° kom pom tias nws siv sijhawm li 4 feeb rau lub hnub kom txav mus txog 1 degree.
Kauj Ruam 5. Ntxiv 1 teev yog tias Nws Yog Lub Caij Nplooj Ntoos Zeeg
Koj yuav tsum tau hloov kho koj lub sijhawm ntau dua thaum Lub Caij Nplooj Ntoos Zeeg Lub Sijhawm, uas pib txij lub caij nplooj ntoo hlav thaum ntxov mus txog rau lub caij nplooj zeeg. Tsuas yog ntxiv 1 teev rau koj lub sijhawm sundial kom phim nws rau cov moos hauv lub sijhawm no.
Tshawb nrhiav hauv online kom pom thaum Lub Sijhawm Txuag Sijhawm pib thiab xaus rau hauv koj cheeb tsam
Kauj Ruam 6. Xam qhov Sib npaug ntawm Lub Sijhawm kom pom lub sijhawm tseeb
Qhov ntev ntawm ib hnub sib txawv me ntsis ntawm ib hnub twg, uas tuaj yeem ntxiv ua kom koj lub hnub qub lub sijhawm sib txawv ntawm lub sijhawm teev ntau npaum li 15 feeb. Yog tias koj xav tau qhov kwv yees kwv yees kwv yees ntau tshaj plaws los ntawm koj lub hnub qub, kho koj qhov kev ntsuas siv Qhov Sib Piv Cov Sijhawm. Tshawb nrhiav ib qho online thiab ntxiv rau lossis rho tawm ntawm lub sijhawm raws li qhia.
