Ingcaciso
I-Ultrasound ibhekisa kulo naliphi na isandi sezandi okanye ukungcangcazela okumaza okuphindaphinda angaphezulu kowona mqobo uphezulu wama-20kHz (kHz) onokuviwa yindlebe yomntu. Lizandi zesandi esinezandi ezijikelezayo ezingaphezulu kwe-20000 Hz. Inolungelelwaniso olulungileyo, isakhono esinamandla sokubonisa, kwaye kulula ukufumana amandla eacoustic agxile ngakumbi. Ihamba kakhulu emanzini kunomoya, kwaye ingasetyenziselwa ukulinganisa umgama, ukulinganisa isantya, ukucoca, ukuwelda kunye nokuqhawula. Ilitye, inzala, njl njl. I-Ultrasound isetyenziswa ngokubanzi kwiinkalo ezininzi ezifana neyeza, umkhosi, ishishini, ezolimo, ubukrelekrele, njl. ngenxa yeempawu zayo eziphezulu. I-Ultrasound ithiywe ngenxa yokuba umda wayo ophantsi we-frequency udlula umda ophezulu wokuva komntu.
Ultrasonic frequency
Izazinzulu zibiza inani leentshukumo ngesekondi ukuphindaphinda kwesandi, kwaye iyunithi yayo yiHertz (Hz). Uluhlu lwamaza esandi olunokuviwa ziindlebe zethu ngabantu yi-20Hz-20000Hz. Amaza omsindo anezandi ezingaphezulu kwe-20,000 Hz abizwa ngokuba “ngamaza e-ultrasonic”. Ukuphindaphinda kwamaza e-ultrasonic aqhele ukusetyenziswa kuxilongo lwezonyango yi-1 MHz ukuya kuma-30 MHz.
Ezinye izilwanyana, ezinjengezinja, amahlengesi, namalulwane, zineendlebe ezingaphaya kwabantu, ngoko ke zinokuweva amaza e-ultrasound. Abanye basebenzise eli nqaku ukwenza iifluti zezinja ezinokuvelisa amaza e-ultrasonic ukubiza izinja.
Okubizwa ngokuba ngamaza e-ultrasonic kuphela adlula kwi-elastic and inertial media, njengomoya. Xa umoya ngokwawo usanda okanye ucinezela, kukho ukusasazwa kwamaza ngokushukuma kweemolekyuli zawo. Ngoko ke, amaza esandi akakwazi ukwanda kwindawo engenanto. Iindlebe zomntu zinokubona ukuguquguquka kwaye zikubize ngokuba sisandi. Ngeli xesha, amaza esandi abizwa ngokuba ngamaza avakalayo.
