Vim nws qhov tshwj xeeb kaw zoo, lub toroidal hlau nplaum tuaj yeem tsim kom muaj qhov sib nqus zoo sib nqus sab hauv. Thaum cov hluav taws xob tam sim no dhau los ntawm ib lub kauj, lub kauj nws tus kheej kuj tsim ib qho chaw sib nqus. Kev sib cuam tshuam ntawm ob qhov chaw sib nqus no yog lub hauv paus ntawm toroidal hlau nplaum cov nyhuv ntawm lub kauj.