Cov hlau nplaum muaj ob lub tsho, tab sis nyob rau qee lub sijhawm ua haujlwm, yuav tsum tau muaj cov hlau nplaum ib leeg. Yog li ntawd, nws yog ib qhov tsim nyog los qhwv ib tug hlau nplaum nrog ib tug hlau, thiaj li hais tias sab ntawm hlau daim yog magnetically shielded thiab refracted los ntawm hlau daim mus rau sab nraud. hlau nplaum. Yog li, qhov sib zog ntawm lub zog ntawm sab nraud yog kho kom zoo dua qub, thiab zoo li lub hlau nplaum no yog siv los ua ib qho hlau nplaum ib qho los yog ib leeg kheej. Nws tsis muaj ib qho hlau nplaum ib qho tiag.
Cov khoom siv rau cov hlau nplaum ib qho mas feem ntau yog ib qho curved hlau thooj thiab ib qho neodymium hlau boron muaj hlau khov, thiab cov duab ntawm neodymium hlau boron muaj zog cov hlau nplaum uas siv rau cov leeg ib zaug xwb feem ntau nyob rau hauv cov duab ntawm lub wafer.