-Ngahuru: tepu, wae me paerewa. pūnaha ngahuru me te Pūnaha o Units International

International Pūnaha o Units - te hanganga e hāngai ana e te i runga i te whakamahi o kuputohu papatipu i roto i te kirokaramu me mita i roto i te roa. Ki te nuinga o tona takenga mai, i reira i ngā putanga o reira. Ko te rerekētanga i waenganui ia ratou takoto i roto i te kōwhiringa o ngā tohu matua. Ki te rā, he maha whenua whakamahi i te wae i roto i te pūnaha SI. I roto i te reira i te huānga ko te taua hoki whenua katoa (anake te United States, Liberia, Burma). Kei te whānui whakamahia tenei pūnaha i roto i ngā mara - i te ora ia rā ki te rangahau pūtaiao.

āhuatanga

pūnaha ngahuru - te huinga whakahau o ngā tawhā. titore ana tēnei i te reira i te tikanga tikanga whakamahia i mua hoki te whakatau i te ngā wae. Hei tohu whakamahi tetahi pūnaha ngahuru rahinga kotahi anake wae nui, te rahi o e taea te rerekē i roto i hautau maha (tutuki tāpiri ira te whakamahi i ngā huānga). Ko te painga matua o tenei huarahi, ko te ki te whakamahi i te atu ohie. Faaore i te tau nui tikanga o wae rerekē (waewae, maile, inihi, me ētahi atu).

tawhā wā

Neke atu i te te wā roa i te maha o ngā pūkenga i ngana ki te tapaea wa i roto i ngā wae ngahuru. wehea ra Fokotu◊u ki ki huānga iti - millisutki me koki - 400 puni tango huringa tohanga tonu mō te 1000 millioborotov ranei. Neke atu i te wa, no te mea o te rarua o te whakamahi i ki te whakarere i te whakaaro. denoted wā teie mahana i roto i hēkona e SR (tito o hākonamano) me tātoro.

Ko te hītori o te takanga

Kei te whakapono te reira e whanau i te pūnaha ngahuru hou i roto i France. I roto i te wā i 1791 ki te 1795 i roto i te whenua i uru mahi hanganga ture tino nui pai. I hāngai ratou i te whakatau i te mana o te mita - kotahi tekau-wahi 1/4 o te afa i te weheruatanga ki te Te Tai Tokerau Pou. Hōngongoi 4, 1837 tangohia he tuhinga motuhake. E ai ki a ia, i mana whakaaetia ai e te whakamahi whakahauanga o nga āhuatanga o i ko nga mehua pūnaha ngahuru whakawhitinga ōhanga katoa kawea atu i roto i France. I muri mai ka tangohia ka anga te hanganga ki horapa ki whenua Pākehā tata. No te mea o tona tapatahi, me te haratau, ko te pūnaha ngahuru āta whakakapi tino motu whakamahia i mua. Ano, he mea whakaaetia ki te whakamahi i roto i te US me te UK.

uara taketake

Per kōwae kaiwhakatū pūnaha roa ruri, rite kua whakahuatia i runga ake, tangohia mita. Huānga papatipu hei karamu - taimaha o tetahi miriona m ³ o te wai i te mea e he kiato paerewa. Hoki te whakamahi māmā o te pūnaha hou kua whakaaro wae kaihanga i te ara ki te hanga a ratou ake wātea - paerewa mā te hokohoko i i whakarewa. E hanga ēnei tauira ki uara pono tino. Kei hea ko te paerewa o te pūnaha ngahuru, ka e kōrero reira i raro. I roto i te heke mai, te whakamahi o enei iwi tauira kitenga e uara sravnenivat hiahiatia ki a ratou nui māmā me te maitai atu atu, hei tauira, he hauwhā o te afaraa. I te wa ano, i rapu ki te whakatau i te papatipu o te tinana, ka reira kitea e ki te aromatawai i tona kounga, he nui atu watea atu i te nui hāngai o te wai te paerewa.

"Pūrangatia" tauira

i tangohia Resolution o te Kōmihana International i 1872 rite te paerewa mō te ine roa mita rawa hanga. I te mau melo o te wa ano o te Komihana faaoti ki te tango i te paerewa mō te ine i te papatipu o te manokaramu motuhake. I hanga te reira o te konukawata me iridium alloys. Kei te tūturu penapena "pūrangatia" mita me te kirokaramu i roto i Paris. I roto i te 1885, i runga i Mei 20, nga māngai o te Kawenata motuhake i hainatia e whitu whenua. Hei wāhanga o reira i whakaritea i te tukanga mō te whakatau me te ine i te whakamahi o ngā paerewa i roto i te rangahau me te tuhituhi. Tenei ka rapua e te whakahaere motuhake. Ko ētahi o ēnei, i roto i ngā, ngā te International Bureau o Weights me Measures. Hei wāhanga o te whakahaere hou hanga tīmata te whanaketanga o te papatipu me te roa o nga tauira ki o ratou kape whakawhiti muri o whenua katoa whai wāhi.

pūnaha-Ngahuru i roto i Russia

Tauira tangohia fiefia atu me te ake whenua. I raro i ēnei āhuatanga, e kore i taea e Russia wareware te putanga o te pūnaha hou. Na reira, ko te Ture o Hōngongoi 4, 1899 (kaituhi me te kaiwhakawhanake - D. I. Mendeleev) reira kua mana hoki te whakamahi i roto i te tikanga kōwhiringa. ka ia whakahauanga i muri anake i te whakatamarikitanga o te Kawanatanga Takitaro i ture i roto i 1917. I muri mai, tona whakamahi kua tohe e SNK i Hōngongoi 21, 1925. I roto i te rau tau rua tekau, oho te nuinga o nga whenua ki te inenga i roto i te Pūnaha International o Units. I whakawhanakehia te putanga whakamutunga o taua mea, me te XI o te amuiraa rahi e paingia ana i roto i te tau 1960.

era pou-Soviet

Orua te tiango o te Soviet Union ki te whanaketanga tere o te hikohiko rorohiko me te kiritaki, hāngai te production matua kei roto i Ahia. I runga i te rohe o te Russian Federation ka anga ki te kawemai consignments nui o enei kaihanga. I roto i tenei take, e kore i whenua Āhia whakaaro e pā ana ki te raruraru ka taea me ngā huakore o te faaohiparaa o ratou taonga ki taupori Russian-korero a homai ona hua ki te ao (i roto i to ratou whakaaro) te ako i roto i te reo Ingarihi, ki te tautuhinga American. I roto i te whakamahi i monohia e te āhuatanga whakamahia i roto i te Hau Amui no Marite i te uara ti'araa o te pūnaha ngahuru. Hei tauira, kei te tohua te rahi o kōpae rorohiko, te aroturuki hauroki me ētahi atu wāhanga i roto i inihi. Ko te kupu tuatahi i te tawhā o enei wae whakaritea uara tino ngahuru (CD me whanui DVD, mo te tauira e rite ana ki te 120 mm).

whakamahinga ao

I tēnei wā, ko te whānui i te nuinga i runga i te ao whenua ko te pūnaha ngahuru o inenga. papatipu Ripanga, roa, tawhiti, me te tahi atu tawhā hanga reira ngāwari ki te iriti i etahi atu tohu. Whenua,, i reira he iti me te iti iho nga tau mo etahi take e kore whakawhiti ki tenei pūnaha. tonu ēnei āhua ki te whakamahi i to koutou ake tawhā, ngā te US, Burma ko Liberia. pai Amerika i roto i te rāngai production pūtaiao pūnaha SI. I roto i te katoa atu kōwhiringa US e hāngai ana. kihai i UK ko St Lucia ano kē ki te pūnaha SI o te ao. Ko, me ahau mea ai ko te tukanga i roto i te wā hohe. Te whenua whakamutunga, i te pae hopea kē ki te pūnaha ngahuru i roto i 2005, ka te Republic o Ireland. Anitīkuā ko Guyana hanga anake te whakawhiti, engari ko te tino puhoi te tere. tonu He āhuatanga ngā i roto i Haina, e mana kē ki te pūnaha ngahuru, engari te whakamahi o te wae Hainamana tawhito i runga i tona rohe.

tawhā rererangi

mohio pūnaha-Ngahuru te tata nga wahi katoa. Ko reira e te tahi mau rāngai i roto i nei e kore e mau i te reira. Kei te whakamahia tonu te rererangi pūnaha inenga, e hāngai ana nei te he taua rahinga rite waewae me maero. Taupānga o te pūnaha i roto i tenei mara mua. Ko te tūranga o te International Civil Aviation Organisation he unambiguous - i reira kia he whakawhitinga ki uara ngahuru. Heoi, enei tūtohutanga e anake mau i te whenua torutoru i roto i tona puka parakore. I roto ia ratou he Russia, China ko Sweden. Ano, ki te rererangi o te hanganga RF, te karo te whakama ki te tari mana ao, i roto i te 2011 tangohia te pūnaha o mehua wāhanga, te wae taketake o e ko te waewae.