Kumanaan sano ayay ku qaadatay in la abuuro boolal yar yar ilaa laga sii adkeeyay saacada dhinaceeda lagana dabciyay dhanka saacada. Budada dahabka ah ma ka fikirtay dhibaato, maxay tahay in la adkeeyo saacada dhinaceeda?
Lixda qalab ee ugu fudud ee farsamada waa:Isbuunyada, Dusha sare ee leexleexan, kabaallayaasha, jiiditaannada, alxanka, giraangiraha, faashashka.
Furku waxa uu ka mid yahay lixda mashiin ee fudud, laakiin haddii aan si badheedh ah u idhaahdo, waa dhidib iyo diyaarad u janjeerta oo ku wareegsan. Maanta, boolaluhu waxay soo saareen cabbirro caadi ah. Habka caadiga ah ee loo isticmaalo furaha waa in la adkeeyo saacada dhinaceeda (oo ka soo horjeeda saacada ka soo horjeeda si loo dabciyo).
Si kastaba ha noqotee, tan iyo markii birta bilawga ah ee bilawga ikhtiraacida dhammaantood lagu sameeyay gacanta, ganaaxa boolalku ma ahayn mid joogto ah, taas oo inta badan lagu go'aamiyay doorbidida shakhsi ahaaneed ee farsamayaqaanka.
Badhtamihii qarnigii 16-aad, injineerka maxkamadda Faransiiska ee Jaques Besson waxa uu ikhtiraacay lathe-ga oo la jarjari karo boolal, tignoolajiyadan ayaa markii dambe caan noqotay 100 sano. Henry Maudsley oo Ingiriis ahaa waxa uu ikhtiraacay lathe casriga ah sannadkii 1797-kii, waxaana la sii wanaajiyey wanaagga dunta. Si kastaba ha ahaatee, ma jiro halbeeg isku mid ah oo cabbirka iyo ganaaxa boolal.
Xaaladdani waxay isbedeshay 1841. Joseph Whitworth, oo bartay Maudsley, ayaa u gudbiyay machadka injineerada dawladda hoose maqaal uu ugu baaqayo in la isku daro moodooyinka biraha. Laba talo ayuu soo jeediyay.
1. U janjeedha dunta dunta waa inay ahaataa 55 °.
2. Iyadoo aan loo eegin dhexroorka furaha, waa in la qaataa halbeeg gaar ah tirada fiilooyinka cagtiiba.
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Waqtiga boostada: Abriil-16-2020