Dab tsi yog qhov tseem ceeb meridian ntawm lub ntiaj teb?
Dab tsi yog qhov tseem ceeb meridian ntawm lub ntiaj teb?

Video: Dab tsi yog qhov tseem ceeb meridian ntawm lub ntiaj teb?

Video: Dab tsi yog qhov tseem ceeb meridian ntawm lub ntiaj teb?
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Cov Prime Meridian yog ib txoj kab kev xav uas, zoo ib yam li txoj kab nruab nrab, faib cov ntiaj teb mus rau sab hnub tuaj thiab sab hnub poob hemispheres. Nws yog qee zaum hu ua Greenwich Meridian . Cov Prime Meridian , raws li nws hla Greenwich, England, suav hais tias yog 0 degrees longitude.

Ntxiv mus, Prime Meridian yog dab tsi?

A thawj meridian yog cov meridian (ib kab ntawm longitude) nyob rau hauv ib tug geographic coordinate system ntawm longitude txhais tau tias yog 0 °. Ua ke, a thawj meridian thiab nws anti- meridian (Ib. 180 meridian hauv 360 °-system) tsim lub voj voog zoo. Lub voj voog loj no faib lub spheroid rau hauv ob hemispheres.

Tom qab ntawd, lo lus nug yog, puas yog tus thawj meridian mus thoob plaws ntiaj teb? Prime Meridian . Ib tug ntxhais hluas thiab nws tsev neeg taug kev sab hnub tuaj thiab sab hnub poob ntawm Greenwich, England, qhov chaw uas muaj tooj dag kos cim zero longitude. Cov thawj meridian cais lub sab hnub tuaj hemisphere los ntawm sab hnub poob hemisphere. Ib nrab thoob ntiaj teb , ntawm 180 degree longitude, yog International Date Line.

Ua raws li qhov no hauv kev xav, Prime Meridian yog dab tsi vim li cas nws tseem ceeb?

Tag nrho cov longitudes yog tib yam qhov tseem ceeb tab sis nrog kev pab ntawm thawj meridian (0° longitude) peb tuaj yeem taug kev txawm tias peb mus rau sab hnub tuaj lossis sab hnub poob. Tej zaum koj yuav hais thawj meridian yog tus ciam teb ntawm East thiab West ntawm lub ntiaj teb. Nws kuj tseem pab tau rau kev txiav txim siab lub sijhawm.

Dab tsi yog meridians ntawm lub ntiaj teb?

A (zeeg) meridian (los yog kab ntawm longitude) yog ib nrab ntawm ib tug zoo kawg nkaus lub voj voog nyob rau hauv lub Lub ntiaj teb nto, txiav los ntawm North Ncej thiab South Ncej, txuas cov ntsiab lus sib npaug ntawm longitude, raws li ntsuas nyob rau hauv lub kaum sab xis sab hnub tuaj lossis sab hnub poob ntawm Prime Meridian.

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