International SI Hurongwa - chimwe chipimo gadziriro munyika itsva

Kwenguva refu munyika dzakasiyana (uye kunyange munzvimbo dzakasiyana kumatunhu munyika iyoyo!) Dai yayo hurongwa yakayerwa. Chero bedzi vanhu vakararama nekaupenyu vasave mumwe, hapana chimwe chinetso ichi haana. Zvisinei, nokuda nokudyidzana kwenyika uye kukura yemarudzi weboka basa, kusikwa yunifomu kwegadziriro muzviyereso akanga chisingadzivisiki.

Izvi Zvakatora nguva, uye ayo mugumisiro aiva rudzi nekuyanana pakati mikuru zvikoro kwesayenzi zvenyika, chimwe nechimwe rave kumanikidzwa kuti zvimwe zvichemo. Pakupedzisira, chokupedzisira mutsetse pakaziviswa muna 1960, uye akanga ave aripo nhasi dzakawanda SI hurongwa.

Pacharo ane Acronym zvinobva rokuti French Système International uye anonzwisisika kwete musayendisiti, asiwo munhuwo mugari, akapedza kudzidza kosi chikoro chesekondari. At paro, dziri SI kwava kukosha kuunganidzwa vezvikwata, uyewo avo chaiyo uye kwakajeka. Its kuitwa hazvirevi kuti States zvose kuti gwaro yakakodzera bumbiro, kurega yavo gadziriro. Zvisinei, kana totaura kushanda, hwakaratidza mudare dzakawanda, kana zvigadzirwa kuti chakatengeswa pasi pose, pane SI maitiro anoita se chikuru Institute of muzviyereso.

Sezvo 1970 akabudisa yakakurumbira SI bhurocha, zvinopa rondedzero chaizvo vose mikuru zviumbu yakayerwa, uyewo mishumo panowanikwa kuchinja kuchangobva. Pari, gwaro ikazobudiswazve kasere uye muna 1985, pamwe chete French uye Chirungu shanduro akaonekwa. In zvose dzakabudirira, bhurocha unodzima uye mutauro.

SI maitiro anofunga sezvo huru nomwe chaiko zvakawanda. Izvi mutinhimira churu amperes, Kelvin, wechipiri, uye candela norwaivhi. Zvinofungidzirwa kuti hapana parameters izvi hazvigoni kuwanwa kubva vamwe, i.e. nomumwe vezvikwata izvi ane anonzi akazvimirira divi. Kubva kwavari, achishandisa chokuwanziridza uye kupesana vari goho Unit nomukaka, uyewo inomunyaradza. Zvinoitwa zvinhu izvi zviri kuramba yakaidzwa, pamwe kazhinji zvakakomba ongororo yesayenzi kukonzera kudiwa tsika itsva.

Vamwe zvinetso SI wemuTesitamende wefizikisi akasangana nokuda kusiyana emashoko uye graphical kumiririrwa chikwata, hazvina chakavanzika Somuenzaniso, pakati French uye Chinese chiperengo rokuti "kilogram" guru musiyano zvakakwana. Panyaya iyi, zvakanzi zvikuru inosimbiswa 1960 Charter kwegore kuti rokuti vezvikwata - hazvina kuderedza, uye algebraic zvinhu kuti regai kuvimba mutauro. The chete chinetso vaibva kuRussia uye dzimwe nyika kuti kushandisa-Latin vasiri uye Cyrillic tsamba. Nzira kubva izvi chaiva chisarudzo chairo dzepasi munharaunda iri kushandiswa pachena zviratidzo ari mashoko States.

Iye zvino, SI maitiro, kune rumwe rutivi, rudzi vimbiso yacho inviolability anokosha dzesayenzi pfungwa, Ukuwo, zviri kuramba vakagadzirira kuchinja zvitsva uye kumukira.