[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.d55.cz\/ultrazvuk-jako-bezne-pouzivany-nastroj\/#Article","mainEntityOfPage":"https:\/\/www.d55.cz\/ultrazvuk-jako-bezne-pouzivany-nastroj\/","headline":"Ultrazvuk jako b\u011b\u017en\u011b pou\u017e\u00edvan\u00fd n\u00e1stroj","name":"Ultrazvuk jako b\u011b\u017en\u011b pou\u017e\u00edvan\u00fd n\u00e1stroj","description":"1. K \u010demu je ultrazvuk u\u017eite\u010dn\u00fd?
 
 
 Nej\u010dast\u011bji si pojem ultrazvuk spojujeme s l\u00e9ka\u0159sk\u00fdm p\u0159\u00edstrojem, kter\u00fd se pou\u017e\u00edv\u00e1 na vy\u0161et\u0159en\u00ed gravidn\u00edch \u017een, ale toto nen\u00ed jedin\u00e9 pou\u017eit\u00ed.
 Ultrazvuk lze pou\u017e\u00edt i jako detektor pohybu, tyto sn\u00edma\u010de pracuj\u00ed na frekvenci 32 kHz, co\u017e je mnohem vy\u0161\u0161\u00ed hladina ne\u017e to, co je schopno zachytit lidsk\u00e9 ucho […]","datePublished":"2020-09-09","dateModified":"2023-05-09","author":{"@type":"Person","@id":"https:\/\/www.d55.cz\/author\/#Person","name":"","url":"https:\/\/www.d55.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/b70ca3e57a61efa655568ea1bab21ec867ae74beaf8b182b9ca53fe6fcb8cee7?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/b70ca3e57a61efa655568ea1bab21ec867ae74beaf8b182b9ca53fe6fcb8cee7?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"d55.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.d55.cz\/wp-content\/uploads\/img_a314458_w2375_t1525336508.png","url":"https:\/\/www.d55.cz\/wp-content\/uploads\/img_a314458_w2375_t1525336508.png","height":0,"width":0},"url":"https:\/\/www.d55.cz\/ultrazvuk-jako-bezne-pouzivany-nastroj\/","about":["N\u00e1kupy"],"wordCount":519,"articleBody":"1. K \u010demu je ultrazvuk u\u017eite\u010dn\u00fd?
 
 
 Nej\u010dast\u011bji si pojem ultrazvuk spojujeme s l\u00e9ka\u0159sk\u00fdm p\u0159\u00edstrojem, kter\u00fd se pou\u017e\u00edv\u00e1 na vy\u0161et\u0159en\u00ed gravidn\u00edch \u017een, ale toto nen\u00ed jedin\u00e9 pou\u017eit\u00ed.
 Ultrazvuk lze pou\u017e\u00edt i jako detektor pohybu, tyto sn\u00edma\u010de pracuj\u00ed na frekvenci 32 kHz, co\u017e je mnohem vy\u0161\u0161\u00ed hladina ne\u017e to, co je schopno zachytit lidsk\u00e9 ucho – co\u017e je rozsah od 20 Hz do 20 kHz. A detektor pracuj\u00edc\u00ed na principu ultrazvuku lze pou\u017e\u00edt pro osv\u011btlen\u00ed prostoru, vejde \u2013 li n\u011bkdo do m\u00edstnosti, senzor zaznamen\u00e1 pohyb a rozsv\u00edt\u00ed se sv\u011btla.
 
  
 D\u00e1le se s p\u0159\u00edstroji na b\u00e1zi ultrazvuku m\u016f\u017eeme setkat v muze\u00edch. Ultrazvuk toti\u017e u\u017e\u00edv\u00e1 c\u00edlen\u00fd zvuk a v muzeu se umo\u017en\u00ed p\u0159ehr\u00e1t nahr\u00e1vku pro n\u00e1v\u0161t\u011bvn\u00edky v jedn\u00e9 oblasti v\u00fdstavy, ani\u017e by byli ru\u0161eni ostatn\u00ed v okol\u00ed.
 
 Elektronick\u00e9 repelenty proti \u0161k\u016fdc\u016fm pou\u017e\u00edvaj\u00ed t\u00e9\u017e ultrazvuku, aby udr\u017eovali hlodavce nebo hmyz v po\u017eadovan\u00e9 vzd\u00e1lenosti.
 
 Podobn\u00fd produkt m\u016f\u017ee b\u00fdt dokonce pou\u017eit k rozehn\u00e1n\u00ed davu teenager\u016f; st\u00e1rnut\u00ed m\u00e1 tendenci sn\u00ed\u017eit schopnost lid\u00ed sly\u0161et zvuky s vy\u0161\u0161\u00ed frekvenc\u00ed, tak\u017ee m\u016f\u017ee vysokofrekven\u010dn\u00ed zvuk otravuje pouze mlad\u00e9 lidi.
 
 2. Jak\u00e9 je nebezpe\u010d\u00ed v pou\u017eit\u00ed ultrazvuku?
 
 Ultrazvuk vys\u00edlan\u00fd vzduchem nen\u00ed v podstat\u011b \u0161patn\u00fd. Ale ostatn\u00ed p\u0159\u00edstroje mohou reagovat negativn\u011b p\u0159i interakci s ultrazvukov\u00fdmi vlnami. Takov\u00e9 naslouch\u00e1tko, kter\u00e9 je pom\u011brn\u011b \u0161iroce pou\u017e\u00edvan\u00e9 ve spole\u010dnosti, dok\u00e1\u017ee p\u0159em\u011bnit kmito\u010det ultrazvuku na l\u00e9pe sly\u0161iteln\u00fd zvukov\u00fd sign\u00e1l, co\u017e zna\u010dn\u011b u\u017eivatele naslouch\u00e1tek obt\u011b\u017euje.
 
 Negativn\u00ed dopad \u0161\u00ed\u0159en\u00ed ultrazvuku m\u00e1 i na iPhone, proto\u017ee ultrazvukem lze \u0161\u00ed\u0159it tajn\u00e9 hlasov\u00e9 sign\u00e1ly, kter\u00e9 vedou k odem\u010den\u00ed telefonu bez souhlasu a v\u011bdom\u00ed jeho majitele.
 
 M\u011bly by se lid\u00e9 starat o ultrazvuk zp\u016fsobuj\u00edc\u00ed ubl\u00ed\u017een\u00ed na zdrav\u00ed?
 
 Je zn\u00e1mo, \u017ee zvuky, kter\u00e9 jsou p\u0159\u00edli\u0161 hlasit\u00e9, mohou po\u0161kodit sluch. Existuje v\u0161ak jen m\u00e1lo d\u016fkaz\u016f, \u017ee by ultrazvuk zp\u016fsobil t\u011blesn\u00e1 po\u0161kozen\u00ed bez dlouhodob\u00e9ho p\u0159\u00edm\u00e9ho fyzick\u00e9ho kontaktu s vysokou intenzitou. Pokud jste n\u00e1hodn\u011b vystaveni extr\u00e9mn\u011b intenzivn\u00edmu ultrazvuku (nap\u0159. p\u0159i dr\u017een\u00ed ultrazvukov\u00e9 obloukov\u00e9 sv\u00e1\u0159e\u010dky), mohlo by doj\u00edt k otrav\u011b jako bolesti hlavy nebo do\u010dasn\u00e9 ztr\u00e1ty rovnov\u00e1hy.
  
 
 Spr\u00e1vn\u00ed \u00fa\u0159ad pro bezpe\u010dnost a ochranu zdrav\u00ed v USA prosazuje ustaven\u00ed limit\u016f pro ultrazvukov\u00e9 vlny, s \u010d\u00edm\u017e nesouhlas\u00ed akademick\u00e1 obec. Pokud by do\u0161lo na prosazen\u00ed on\u011bch \u00farovn\u00ed, bylo by to limituj\u00edc\u00ed pro v\u011bdce a jejich p\u0159\u00edstroje vyu\u017e\u00edvaj\u00edc\u00ed ultrazvuk. 
 
 Dal\u0161\u00ed negativn\u00ed dopad roz\u0161\u00ed\u0159en\u00ed ultrazvuku jako komer\u010dn\u011b pou\u017e\u00edvan\u00e9ho za\u0159\u00edzen\u00ed je na zv\u00ed\u0159ata, nap\u0159\u00edklad psi maj\u00ed velmi citliv\u00fd sluch a tyto zvuky dok\u00e1\u017e\u00ed rozli\u0161it. Vedlo by to k soustavn\u00e9mu po\u0161kozov\u00e1n\u00ed sluchu zv\u00ed\u0159at obecn\u011b, co\u017e je zat\u00edm nejhlavn\u011bj\u0161\u00ed argument v boji proti roz\u0161\u00ed\u0159en\u00ed p\u0159\u00edstroj\u016f na b\u00e1zi ultrazvuku. 
 
                                                                                                                                                                                                                                                                                                                                                                                         4.1\/5 - (9 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Ultrazvuk jako b\u011b\u017en\u011b pou\u017e\u00edvan\u00fd n\u00e1stroj","item":"https:\/\/www.d55.cz\/ultrazvuk-jako-bezne-pouzivany-nastroj\/#breadcrumbitem"}]}]