Chiyeredzo chehurefu ndicho chinhu chinoshandiswa nevanhu kuyera kureba kwezvinhu zviri muchadenga. Nyika dzakasiyana dzine mayuniti akasiyana ehurefu. Kune marudzi akawanda ehurefu hwemayuniti ekushandura nzira munyika, kusanganisira dzechinyakare Chinese urefu mayuniti, epasi rose mwero urefu mayuniti, emperial urefu mayuniti, mayuniti urefu hwenyeredzi, nezvimwewo. Muhupenyu hwedu hwezuva nezuva, kudzidza, nekugadzira bhizinesi nekushanda, kutendeuka urefu hwezvikamu hazviparadzaniswe. Pazasi pane rondedzero yeshanduko mafomula pakati pemayuniti akasiyana, tichitarisira kukubatsira zvirinani.
MuInternational System of Units, yakajairika unit yehurefu "mita", inomiririrwa nechiratidzo "m". Aya hurefu mayuniti ese metric.
Iyo yekushandura fomula pakati pepasirese mwero urefu hwemayuniti ndeiyi inotevera:
1 kilomita/km=1000 metres/m=10000 decimeter/dm=100000 masendimita/cm=1000000 mamirimita/mm
1 millimeter/mm=1000 micron/μm=1000000 nanometer/nm
Mayuniti echiChinese ehurefu anosanganisira mamaira, tsoka, tsoka, nezvimwewo. Mamiriro ekushandura akaita seanotevera:
1 maira = 150 tsoka = 500 metres.
2 mamaira = 1 kiromita (1000 metres)
1 = 10 tsoka,
1 tsoka = 3.33 metres,
1 tsoka = 3.33 decimeters
Nyika shoma dzeEurope neAmerica, kunyanya United Kingdom neUnited States, dzinoshandisa mauto eumambo, saka urefu hwadzinoshandisa hwakasiyanawo, kunyanya mamaira, mayadhi, tsoka, uye masendimita. Nzira yekushandura yehumambo hurefu hwemayuniti ndeiyi inotevera: Mile (maira) 1 maira = 1760 mayadhi = 5280 tsoka = 1.609344 makiromita Yadhi (yadhi, yd) 1 yadhi = 3 tsoka = 0.9144 metres Fathom (f, fath, Fa, ftm) 1 fathom = mayadhi maviri = 1.8288 metres Wave (furlong) 1 wave = 220 mayadhi = 201.17 mamita Tsoka (tsoka, ft, kuwanda itsoka) 1 tsoka = 12 inches = 30.48 masendimita Inch (inch, mu) 1 inch = 2.54 centimeters
Mukuongorora nyeredzi, "light-year" rinowanzoshandiswa sechikamu chehurefu. Ndiro nhambwe inofambwa nechiedza muvacuum state mugore rimwechete, saka inodaidzwawo kunzi light-year.
Iyo yekushandura fomula yemayuniti ehurefu hwenyeredzi ndeyekutevera:
1 chiedza gore=9.4653×10^12km
1 parsec = 3.2616 chiedza chemakore
1 chikamu chemuchadenga≈ mamirioni 149.6 makiromita
Zvimwe zvikamu zvehurefu zvinosanganisira: mita (Pm), megameter (Mm), kiromita (km), decimeter (dm), centimita (cm), millimeter (mm), sirika mita (dmm), Masendimita (cmm), micrometers (μm) , nanometers (nm), picometers (pm), femtometers (fm), ammeters (am), nezvimwewo.
Hukama hwavo hwekushandura nemamita hwakaita seizvi:
1PM =1×10^15m
1Gm =1×10^9m
1Mm =1×10^6m
1km=1×10^3m
1dm=1×10^(-1)m
1cm=1×10^(-2)m
1mm=1×10^(-3)m
1dmm =1×10^(-4)m
1cm =1×10^(-5)m
1μm=1×10^(-6)m
1nm =1×10^(-9)m
1pm=1×10^(-12)m
1fm=1×10^(-15)m
1am=1×10^(-18)m
Nguva yekutumira: Mar-22-2024