Kuthamanga kwa phokoso ndi liwiro la kufalitsa kwa kusokonezeka kwa mphamvu yofooka mkatikati, ndipo kukula kwake kumasiyana malinga ndi chikhalidwe ndi chikhalidwe cha sing'anga. Liwiro la mawu mumlengalenga ndi pafupifupi 340 m/s pa 1 standard atmospheric pressure ndi 15°C.
Liwiro la kufalikira kwa mafunde omveka mu sing'anga yotanuka ndi liwiro la mawu, chizindikiro chake ndi c, unit ndi m/s: c=λf
Mu formula, f ndiye kugwedezeka pafupipafupi, ndiye kuti, kuchuluka kwa kugwedezeka pamphindikati, Hz: λ ndi kutalika kwa mafunde, m.
Chifukwa palibe kukameta ubweya wa ubweya mu mpweya, voliyumu elasticity yekha, kotero kufalitsa mawonekedwe a mpweya akhoza kukhala longitudinal mafunde. Mwa kuyankhula kwina, chifukwa cha kusokonezeka kwa mafunde, tinthu tating'onoting'ono ta gasi timagwedezeka pafupi ndi malo omwe ali ofanana, ndikupanga njira yowonjezereka komanso yochepa yopatsirana motsatizana. Pa nthawi yomweyi, njira yosuntha ya tinthu ndi yofanana ndi njira yofalitsa mafunde. Nthawi zambiri, kumveka kwa liwiro la gasi muzochitika zilizonse kumakhala kovuta. Mawu ake ndi ogwirizana ndi kuchuluka kwa mamolekyu, mphamvu ya kutentha kwapadera, ndi ma equation a katundu wa gasi, ndipo sizidzafotokozedwa pano. M'mavuto ambiri, njira yomveka bwino ya mpweya wabwino imagwiritsidwa ntchito nthawi zambiri.
Zitha kutsimikiziridwa kuti kuthamanga kwa phokoso mu mpweya wabwino ndi: c = (rp / p) 0.5 Mu chilinganizo, r adiabatic coefficient ndi ofanana ndi chiŵerengero cha kutentha kwa mphamvu pa kupanikizika kosalekeza ku mphamvu ya kutentha pa kupanikizika kosalekeza; p ndi kuthamanga kwa gasi, Pa; ρ ndi kachulukidwe, kg/m3.
Liwiro lofalitsa mu media zosiyanasiyana
Vacuum 0m/s (ndiko kuti, sangathe kufalitsidwa);
Mpweya (15 ℃) 340m/s;
Mpweya (25 ℃) 346m/s;
Nkhata 500m/s;
Palafini (25 ℃) 1324m/s;
Madzi osungunuka (25 ℃) 1497m / s;
Madzi a m'nyanja (25 ℃) 1531m/s;
Mkuwa (ndodo) 3750m / s;
Marble 3810m/s;
Aluminiyamu (ndodo) 5000m / s;
Chitsulo (ndodo) 5200m / s;
