Vhura kumativi ese uye ine gomo concentric chikamu, kureba kwayo uye perimeter yesimbi yakakura.Madimikira epombi yesimbi ine zviyero zvekunze (zvakadai sedhayamita rekunze kana kureba kweparutivi) uye dhayamita yemukati uye ukobvu hwemadziro, saizi yaro yakakura kwazvo, kubva padhayamita yechubhu diki yecapillary kusvika padhayamita inosvika mamita akati wandei. yepombi huru yesimbi yakatenderera.Round simbi machubhu anoshandiswa mumapaipi, midziyo inopisa, indasitiri yemuchina, peturu uye geological kuchera, midziyo, indasitiri yemakemikari uye nezvinangwa zvakakosha.