puas sib nqus sab qaum teb hloov

Qhov no yog qhov teeb meem loj uas yuav tsum tau saib xyuas thiab ua tib zoo saib xyuas los ntawm txhua qhov kev lag luam uas cuam tshuam nrog cov khoom sib nqus.

Rau cov neeg uas yuav tsis paub, magnetic sab qaum teb yog cov kev taw qhia ntawm sab qaum teb kawg ntawm ib tug magnetized compass koob ntsiab lus. Nws txawv ntawm qhov tseeb sab qaum teb, uas yog kev coj mus rau thaj chaw North Ncej. Sib nqus sab qaum teb tuaj yeem hloov mus rau lub sijhawm, thiab qhov kev hloov pauv tsis ntev los no tau nce ntxiv. Qhov tseeb, sib nqus sab qaum teb tau tsiv mus sai heev nyob rau hauv xyoo tas los no uas nws tau dhau los ua kev txhawj xeeb rau kev taw qhia thiab kev teeb tsa thoob ntiaj teb.

Qhov kev hloov pauv hauv kev sib nqus sab qaum teb muaj qhov cuam tshuam tseem ceeb rau kev lag luam uas tso siab rau cov khoom sib nqus, xws li cov khoom siv sib nqus, cov ntsuas ntsuas, thiab cov khoom siv sib nqus. Nws yog ib qho tseem ceeb rau cov neeg tsim khoom thiab cov neeg siv khoom ntawm cov khoom no kom paub txog qhov muaj feem cuam tshuam thiab ua qhov tsim nyog hloov kho.

Cov khoom sib nqus yuav tsum tau calibrated thiab programmed los hloov kho magnetic teb. Qhov no suav nrog kev xyuas kom meej tias cov compasss raug kho kom raug rau tus account rau kev hloov hauv magnetic sab qaum teb. Nws kuj txhais tau hais tias cov sensors thiab cov khoom siv sib nqus yuav tsum tau tsim los suav rau cov kev hloov pauv hauv magnetic polarity.