Afka hawo-mareenka hawo-mareenku waa biiyaha isku daraa gaas la cadaadiyey oo dareere ah ka dibna ku buufinaya si uu u buufiyo ceeryaamo u eg, halka hannaanka hawo-mareenka siphon-ka uu yahay nooc ka mid ah hawo-mareenka, sifadiisuna tahay ma loo baahan yahay Cadaadis, taas oo ah, dareeraha uma baahna in lagu rakibo bamka biyaha. Waxaad u baahan tahay oo kaliya inaad u dirto gaas la cadaadiyey biiyaha, oo biiyaha ayaa nuugi doona dareeraha hoostiisa, isku qas oo buufi.

Sida ku cad mabda’a Bernoulli, nidaamka dareeraha, sida ugu dhakhsaha badan ee qulqulka qulqulka, ayaa hoos u dhigaya cadaadiska uu dareeraha soo saaro. Anagoo adeegsanayna ifafaalahan, waxaan samaynay qulqulka hawo siphon hawada. Marka la barbardhigo hawo -dhaqameedka hawo -mareenka ee u baahan cadaadiska dareeraha, ceeryaanta Qaddarku wuu yaraan doonaa, laakiin cabbirka walxaha la sumeeyey ayaa sidoo kale ka yaraan doona. xor ayaad u tahay inaad nala soo xiriirto.