Lub nrawm ntawm kev txav ntawm cov nkoj feem ntau yog qhia hauv pob caus. Ib qho khawm yog qhov ceev uas tso cai rau lub nkoj taug kev ib mais nautical nyob hauv ib teev. Hauv cov ntsiab lus ntawm cov kev ntsuas ntawm kev ntsuas kom paub txog rau cov neeg feem coob, ib pob caus yog 1.852 kilometers ib xuab moos.
Cov Lus Qhia
Kauj ruam 1
Hauv kev xyaum nautical, nws yog kev coj mus ntsuas ntsuas qhov nrawm ntawm lub nkoj hauv pob taws. Ib qho khawm yog qhov ceev uas koj tuaj yeem npog ib nautical mais hauv ib teev. Hais txog peb cov mais niaj zaus, ib qho khawm yog 1.852 mais ntawm ib teev. Raws li, txhawm rau hloov pob rau ib teev nyob rau hauv ib teev, nws yog txaus kom nce tus ceev hauv pob taws los ntawm 1.852.
Kauj ruam 2
Yog tias koj muaj Is Taws Nem nyob ntawm koj lub ntsis ntiv tes, txhawm rau hloov cov nodes mus rau km, koj tsuas yog yuav tsum tau mus rau Google lub tshuab tshawb nrhiav thiab sau cov kab lus xws li "5 nus rau mais". Google yog lub tswvyim tshawb nrhiav ntse thiab muaj lub tshuab ntsuas lub cim hloov pauv, yog li nws yuav qhia koj cov ntaub ntawv koj tab tom nrhiav ntawm nplooj ntawv tshawb. Piv txwv li, rau cov kab lus tshawb nrhiav siv los ua piv txwv, nws yuav ua tus sau "5 pob = 9.26 kis lus mev". Kilometers ntawm no txhais tau tias qhov nrawm nyob rau hauv kilometers moos.
Kauj ruam 3
Lub neej ntawm cov pob caus hauv kev coj ua yog ze rau lub tswvyim ntawm "nautical mais". Thaum pib, nws tau coj raws li qhov ntev ntawm lub ntiaj teb qhov chaw hauv qhov loj ntawm ib qho arc feeb. Yog hais tias lub nkoj tau txav mus rau ntawm meridian rau ib feeb ntawm lub caij nyoog, nws tau hais tias nws tau npog ib qho nautical mais. Tom qab ntawd, mais yog qhov sib npaug rau 1852 meters.
Kauj ruam 4
Lub npe heev "pob caus" los ntawm cov qauv ntawm kev ntsuas cov nrawm ntawm nkoj siv lub cav. Cov lag luam yog lub voos xwm txheej nrog cov hlua thiab ib txoj hlua khi rau nws. Lawv txawb nws astern thiab suav cov naj npawb ntawm pob rau ntawm txoj hlua, uas tau hla dhau ib feeb.
Kauj ruam 5
Cov nkoj niaj hnub caij nkoj ntau dua sai dua li cov uas tau siv hauv cov hnub ntawm kev siv lub cav ntoo. Yog li, cov sib tw ncaws pob ua si tsim los ntawm Columbus tau nruab nrog lub zog roj cav uas muaj peev xwm ua kom lub nkoj nrawm mus rau 22 qhov ntev - ntev txog 40 mais ib teev twg. Thiab ntawm ib qho ntawm "40" chav sib tw kis las ncaws pob, tus kws ntaus kis las Askiv Nick Bubb tuaj yeem ncav cuag qhov nrawm ntawm 34 pob pob - txog 60 km ib teev.
