Meel saddex dhinac-cabbir ah ee dunida wax

meel bannaan oo saddex geesood ah waa model ah joomateri dunida aan ku nool nahay. Saddex dhinac-cabbir, waxa la yidhaahdaa waa sababtoo ah ee uu sharaxaad u dhiganta saddex fallaadhaha unit isagoo jiho oo dherer ah, width iyo height. Aragtida of meel saddex geesood ah ayaa weli koraya jir ah oo aad u hore iyo si toos ah la xiriira isuduwidda of nin. si qoto dheer ee uu aragtida ku xiran tahay awoodda fahamka muuqaal ah dunida oo awood u leh inay aqoonsadaan sadex dhinac iyadoo la kaashanayo dareenka.

Sida laga soo xigtay geometry analytic, meel bannaan oo saddex geesood ah ee qodob kasta waxa lagu tilmaamay by saddex sifeeyay tiro, loo yaqaan wadataa. duwo faasas kuwaas oo dadab iyo in ay midba midka kale, dhibic isgoyska noqonaya asal ahaan, isagoo qiimaha eber. booska uu ka dhibic kasta oo meel qaraabo qeexay in saddex faasas isagoo qiimo kala duwan tiro in bareeg kasta loo dejiyay. meel saddex dhinac-cabbir kasta ee dhibcaha waxaa lagu qeexaa by saddex lambar oo u dhiganta fog ka soo dhibic tixraaca ee dhidibka kasta duwo in dhibic ka mid ah isgoyska la diyaarad loo dejiyay. Waxa kale oo jira sida duwo nidaamka sida nidaamyada goobaabin cylindrical.

In algebra toosan, fikradda guud ee cabbirka saddex dhinac-cabbir ah waxa lagu tilmaamay by fikirka ah madax-bannaanida toosan. meel jirka waa saddex dhinac-cabbir ah, maxaa yeelay, height of shay kuma xirna ay width iyo dhererka. In afka bannaan algebra toosan waa saddex dhinac-cabbir ah, maxaa yeelay, dhibic kasta oo gaar ah waxaa lagu gar gooyn karo isku darka saddex fallaadhaha in ay yihiin linearly madax banaan midba midka kale ka. In dejinta this, fikirka ah-time bannaan yahay qiimaha afar-geesood ah, maxaa yeelay, booska uu ka hal dhibic in xilliyada kala duwan oo waqti kuma xirna meesha in meel bannaan oo.

Qaar ka mid ah guryaha taas oo uu leeyahay meel saddex dhinac-cabbir ah, kachesvenno ka duwan kuwa meelaha ku jira dhinacyada kale. Tusaale ahaan, gunti xidhan by Xadhig, waxa uu ku yaalaa hoose Qiyaasan. Inta badan oo ka mid ah sharciyada jirka la xiriira dhinacyada saddex-geesood ah ee meesha bannaan ee, tusaale ahaan, sharci-bedelka square ah. In meel saddex dhinac-cabbir ah waxaa laga yaabaa in laba dhinac-cabbir bannaan, mid ka mid waji leh iyo eber-cabbir ah, iyadoo laftiisa waxaa loo arkaa qayb ka mid ah model ah meel bannaan oo afar-geesood ah.

Isotropy of space waa mid ka mid ah hantida muhiimka ah ee makaanikada classical. meel Isotropic waxaa la odhan jiray, maxaa yeelay, marka qoqobada jir tixraaca xagal kasta oo aan loo aabo yeelin badala natiijooyinka cabiraada aan dhacaya. Sharciga ilaalinta ee dardar angular ku salaysan yahay guryaha isotropic ee meesha bannaan ee. Taas macnaheedu waa in meel bannaan oo ka mid ah tilmaamaha oo dhan waa u siman yihiin oo ma jiraan wax qeexidda gaar ah jihada la madax banaan dhidibka dhabanada. Isotropy leeyahay guryaha jirka isla dhammaan jihooyinka ay suurtagal tahay. Sidaas darteed, meel bannaan oo isotropic - waa sida jawi, guryaha jirka ah ee aan ku xiran tahay jihada.