Ukuvevezela Sound. Ngokoqobo. Umthelela on komuntu

Ukuhlala ezweni amagagasi ezahlukene, omunye njalo azizwa umthelela umsindo. Ukuvevezela Sound - akuyona nje into ehambisana naye yonke indawo, kodwa futhi umthombo wenjabulo, kodwa futhi esinamandla Imininingwane ithuluzi. Buciko ezihlukahlukene nemisebenzi, umsindo uyakwazi khuza ingozi, injabulo, babe wokuxhumana. Siyajabula ukulalela icula, umculo soft, ungenele ingxoxo nabanye abantu.

Ukuvevezela Sound ibalulekile hhayi kuphela abantu kodwa futhi izilwane ezisebenzisa umsindo ukuze usinde.

Ngokwemvelo yayo, umsindo kuyinto amagagasi mechanical nokunwebeka, ekwazi ukuba asakaze e ukudla okuqinile, uketshezi, amagesi e. imithombo Sound kunyakaza Sound kubangele vibration (oscillations mechanical), okuyinto evame iso ongabonakali. Ngu umsindo imithombo ingase ihlanganise nemizimba yenyama obonisa kunyakaza yesibili (aqhaqhazele noma vibration) ngayinye nge imvamisa kanye 16-20000. Ukuvevezela Sound kungadala emizimbeni okuqinile (string uqweqwe), gaseous (emoyeni jet), liquid (amagagasi ulwandle).

Phakathi izici umsindo ukuhlukanisa imingcele ezimbili: izwi - kunyakaza imvamisa umsindo; ivolumu - a sonic wave kwawo namandla awo. Iyunithi ivolumu ubhekwa 1 Bel (ke yethiwa omunye umsunguli we ucingo - Aleksandra Grehema Bell). Cishe owodwa Bel alisetshenziswa, isimo sikuvumela ukusebenzisa ama-decibel angu, ilingana omunye kwabayishumi Bel. Ukuze abe nomqondo okucacile isici ivolumu kucatshangelwe ukuthi 10 dB - ukuhleba ke; 20-30 dB sihambisana umsindo evamile egumbini lokuphumula; 50 dB - lena isilinganiso ivolumu yocingo; amandla umsindo e 80 dB iloli injini egijima; Ngokwendlela umzimba owakheke ngayo ubuhlungu embundwini e abantu kwenzeka 130 dB; 180 dB kungaholela ukudabuka we eardrum.

Uma ucabangela amagagasi umsindo amaza ezahlukene, ezinyakazisa zishone lé nalé ephezulu imvamisa zihlanganisa ukucula kwezinyoni, imisindvo ongaphakeme zihlanganisa umsindo injini iloli. Nge zonke uhla izakhiwo kanye nezici ezingalingani amagagasi bemvelo ezahlukene, amaza omsindo kabanzi emikhakheni ehlukahlukene. izakhiwo uketshezi zaziwusizo ngenkuthalo asetshenziswe Ukuhlolwa ekujuleni kolwandle. Zonke Echoes eyaziwa, isibonelo, isetshenziswa ukunquma amabanga e amaza omsindo. Isibonelo abatelekile ingashiwo amalulwane sonar zemvelo.

A uhlobo olukhethekile ultrasound kunyakaza acoustic siyindlela ngempumelelo kakhulu ezandleni odokotela kanye nabanye abacwaningi. Lezi kunyakaza ayigagasi nge amaza ka 20 000 Hz. Le modi oscillation enezinto eziningi izakhiwo esiyingqayizivele. Kudlulwa amanzi, le ultrasound ukubila yayo (cavitation) ne nesenzakalo yamanzi isando. Ukusebenzisa izakhi ultrasound ungakwazi ukuhlukanisa ebusweni kwensimbi akuqede ukudla okuqinile. Ultrasound ivumela kuhlangana khona ukutshezi okuyizinto immiscible ngaphansi kwezimo abavamile, isibonelo, emulsions base uwoyela. Ultrasound ivumela saponification kwamafutha. Lomgomo sitholakala kudivayisi egeza imishini. Impahla of ultrasound ukukhiqiza umphumela kwasani isetshenzisiwe ku ultrasonic nokunamathisela ngomthofu yensimbi.

A uhlobo olukhethekile kunyakaza-16 Hz libizwa infrasound. Kuyaziwa ukuthi kunyakaza lokhu imvamisa kungaba nomphumela ubuhlungu emzimbeni womuntu ezaziwayo. Ngezinye amaza ka 4-8 Hz esiyitholayo vibration yezitho zangaphakathi, imvamisa at 12 Hz icuphe i Ukugula okubangelwa ukuhamba ngomkhumbi.

Imithombo kungenzeka imishini infrasound nge evele ezinkulu, ezivuma kunyakaza mechanical imvamisa ongaphakeme (imvelaphi mechanical) noma uketshezi kanye amagesi eligeleza izakhiwo zeziyaluyalu (hydrodynamic noma imvelaphi sokunciphisa umoya lapho zindiza).