Amayunithi wesilinganiso yiwo izinsimbi ezisetshenziselwa ukulinganisa izinto ezahlukahlukene, kuze kube sezingeni lapho izinombolo ngokwazo zivumela kuphela ukubala lezo zinto ezihlukanisiwe njengamayunithi. Akuyona yonke into abantu abahlose ukuyilinganisa engahlukaniswa ngamayunithi, hhayi ngokungeza amathuba amaqhezu: kuyadingeka ezimweni ezithile ukwethula amaphethini wokulinganisa ahlukile.
Lawa manyunithi agcwalisa amanani we-scalar, futhi ngokuvamile akha igama elilodwa noma amabili ashiwo ekugcineni kwenombolo. Ulwazi ngamayunithi wokulinganisa lwenza sikwazi ukuqonda ukuthi hlobo luni lweyunithi esikhuluma ngalo. Kodwa-ke, ngaphakathi kokukalwa kobukhulu kunezinkulumo ezahlukahlukene, ezenza ukuthi kudingekile inqubo yokuguqula, okuvame ukuthi ngezinye izikhathi ulwazi lilinganiselwe ososayensi abangongoti ngale ndaba.
Kungakho-ke, ngokweningi lomphakathi, kujwayelekile ukuthi amayunithi wesilinganiso athulwe endaweni eyodwa kuphela, esifundeni esifanayo: ukuphindaphindwa kweyunithi elifanayo, okungekho okwehlukene okubili (amagremu, ama-milligram, namakhilogremu ayingxenye yeyunithi efanayo yokukala). Lapho umuntu ongazi okuningi ngamayunithi wokulinganisa ehambela kwenye indawo, kujwayelekile ukuthi abe nokudideka ngobungako bobuningi.
Kodwa-ke, kuvunyelwene ukwethula i- uhlelo lomhlaba jikelele lwamayunithi ukuze umhlaba ube nendlela eyingqayizivele yokulinganisa amanani athile. Kwavunyelwana-ke ukuthi kwenziwe uhlu lwamayunithi ayisikhombisa wokulinganisa: eyodwa ngobude, eyodwa ngesisindo, eyodwa yesikhathi, eyodwa ngamandla wamanje kagesi, enye ngethempelesha ye-thermodynamic, eyodwa ngobuningi bezinto kanye nenye yokuqina kokukhanya .
Izibonelo ezingamashumi amabili zamayunithi wokulinganisa zizochazwa lapha, kugcizelelwa lezo eziyingxenye yohlelo lwamayunithi omhlaba jikelele. Kwamanye amacala, kuzobalulwa ubudlelwano obusungulwe nalomhlaba jikelele.
- Isitimela (isilinganiso sobude, uhlelo lwamazwe ngamazwe lwamayunithi)
- Inch (ubude besilinganiso, lapho imitha elilodwa lilingana nama-intshi angu-39.37)
- Igceke (isilinganiso sobude, lapho imitha elilodwa lilingana namamitha ayi-1.0936)
- Izinyawo (isilinganiso sobude, lapho imitha elilodwa lingamamitha acishe abe ngu-3.2708)
- Mile (isilinganiso sobude, lapho imitha elilodwa lingamamayela ayi-0.00062)
- Amakhilogremu (isilinganiso sobukhulu, uhlelo lwamanyunithi lwamazwe omhlaba jikelele)
- ILibra (isilinganiso sobunzima, lapho ikhilogremu ingamakhilogremu angu-2.20462)
- Itshe (isilinganiso sobunzima, nekhilo eli-1 elilingana netshe elingu-0.157473)
- Ounce (isilinganiso sobunzima, lapho ikhilogremu ingama-ounces angama-35.274)
- Okwesibili (isilinganiso sesikhathi, uhlelo lwamazwe ngamazwe lwamayunithi)
- Ilitha (isilinganiso sevolumu, esivame ukusetshenziswa)
- Izinga eliphakathi (isilinganiso se-engeli)
- IsiRadian (isilinganiso se-angle, lapho i-1 centesimal degree ingama-radian ayi-0.015708)
- Amalitha ase-US (isilinganiso sevolumu, silingana no-3.78541 litres)
- Amp (isilinganiso samanje, uhlelo lwamanyunithi lwamazwe omhlaba jikelele)
- UKelvin (Isilinganiso sokushisa se-thermodynamic, uhlelo lwamayunithi omhlaba jikelele)
- AmaCelsius degrees (isilinganiso sokushisa, kulinganiselwa ngokususwa kukaKelvin - 273.15)
- Ama-Fahrenheit degrees (isilinganiso sokushisa, kulinganiselwa ngomsebenzi [(uKelvin - 273.15) * 1.8] + 32)
- UMol (isilinganiso sobungako bezinto, uhlelo lwamazwe ngamazwe lwamayunithi)
- Ikhandlela (isilinganiso sokuqina okukhanyayo, uhlelo lwamayunithi omhlaba jikelele)
