Iyunithi yobude iyiyunithi eyisisekelo esetshenziswa abantu ukukala ubude bezinto ezisemkhathini. Amazwe ahlukene anamayunithi ahlukene obude. Kunezinhlobo eziningi zezindlela zokuguqula iyunithi yobude emhlabeni, okuhlanganisa amayunithi obude bendabuko yamaShayina, amayunithi obude obujwayelekile bamazwe ngamazwe, amayunithi wobude bombuso, amayunithi wobude bezinkanyezi, njll. Ekuphileni kwethu kwansuku zonke, ukutadisha, nokukhiqizwa nokusebenza kwebhizinisi, ukuguqulwa kwe amayunithi ubude awahlukaniseki. Ngezansi kunohlu lwamafomula okuguqulwa phakathi kwamayunithi ahlukene, ngethemba lokukusiza kangcono.
Ku-International System of Units, iyunithi evamile yobude "imitha", emelelwa uphawu "m". Lawa mayunithi wobude wonke angamamethrikhi.
Ifomula yokuguqula phakathi kwamayunithi obude obujwayelekile bamazwe ngamazwe imi kanje:
1 ikhilomitha/km=1000 amamitha/m=10000 idesimitha/dm=100000 amasentimitha/cm=1000000 amamilimitha/mm
1 millimeter/mm=1000 micron/μm=1000000 nanometer/nm
Amayunithi e-Traditional Chinese ubude afaka amamayela, izinyawo, izinyawo, njll. Ifomula yokuguqula imi kanje:
1 imayela = 150 izinyawo = 500 amamitha.
2 miles = 1 ikhilomitha (1000 amamitha)
1 = 10 amafidi,
1 unyawo = 3.33 amamitha,
unyawo olu-1 = amadesimitha angu-3.33
Amazwe ambalwa aseYurophu naseMelika, ikakhulukazi i-United Kingdom ne-United States, asebenzisa ama-imperial units, ngakho amayunithi obude awasebenzisayo nawo ahlukile, ikakhulukazi amamayela, amayadi, izinyawo nama-intshi. Ifomula yokuguqulwa yamayunithi obude bombuso imi kanje: Imayela (imayela) imayela elingu-1 = amayadi angu-1760 = amafidi angu-5280 = 1.609344 amakhilomitha Igceke (igceke, yd) 1 yadi = 3 izinyawo = 0.9144 amamitha Fathom (f, fath, Fa, ftm) Ifathomu engu-1 = amamitha angu-2 = 1.8288 amamitha Igagasi (i-furlong) 1 igagasi = 220 amamitha = 201.17 amamitha Izinyawo (unyawo, ft, ubuningi buyizinyawo) 1 unyawo = 12 amayintshi = 30.48 amasentimitha Intshi (intshi, in) 1 intshi = 2.54 intshi
Kusayensi yezinkanyezi, "unyaka wokukhanya" uvame ukusetshenziswa njengeyunithi yobude. Kuyibanga elihanjwa ukukhanya endaweni engenalutho onyakeni owodwa, ngakho-ke kubuye kuthiwe i-light-year.
Ifomula yokuguqula yamayunithi wobude bezinkanyezi imi kanje:
1 unyaka wokukhanya=9.4653×10^12km
I-parsec engu-1 = iminyaka engu-3.2616 yokukhanya
Iyunithi ye-astronomical engu-1≈ amakhilomitha ayizigidi ezingu-149.6
Amanye amayunithi obude afaka: imitha (Pm), i-megameter (Mm), ikhilomitha (km), idesimitha (dm), isentimitha (cm), imilimitha (mm), imitha yesilika (dmm), Amasentimitha (cmm), ama-micrometer (μm) , ama-nanometers (nm), ama-picometers (pm), ama-femtometers (fm), ama-ammeters (am), njll.
Ubudlelwano babo bokuguqulwa namamitha bumi kanje:
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
Isikhathi sokuthumela: Mar-22-2024