{"id":65223,"date":"2023-07-05T12:00:26","date_gmt":"2023-07-05T10:00:26","guid":{"rendered":"https:\/\/botland.com.pl\/blog\/zjawisko-dopplera-na-czym-polega-i-gdzie-go-szukac\/"},"modified":"2026-04-08T11:09:37","modified_gmt":"2026-04-08T09:09:37","slug":"doppleruv-jev-co-to-je-a-kde-ho-hledat","status":"publish","type":"post","link":"https:\/\/botland.cz\/blog\/doppleruv-jev-co-to-je-a-kde-ho-hledat\/","title":{"rendered":"Doppler\u016fv jev &#8211; co to je a kde ho hledat?"},"content":{"rendered":"<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">\u010cas \u010dten\u00ed:<\/span> <span class=\"rt-time\"> 4<\/span> <span class=\"rt-label rt-postfix\">min.<\/span><\/span>\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"65223\" class=\"elementor elementor-65223 elementor-36864\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-151e365 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"151e365\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-c7eefbd\" data-id=\"c7eefbd\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5672d8d elementor-widget elementor-widget-text-editor\" data-id=\"5672d8d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>\n<strong>Uprost\u0159ed kulat\u00e9 kalu\u017ee sed\u00ed \u0161\u0165astn\u00fd \u010derv. Ka\u017edou chv\u00edli t\u0159ese nohama, co\u017e zp\u016fsobuje rozruch, kter\u00fd se \u0161\u00ed\u0159\u00ed vodou. Pokud interference vznik\u00e1 v jednom bod\u011b, \u0161\u00ed\u0159\u00ed se z tohoto bodu v\u0161emi sm\u011bry. Proto\u017ee se poruchy pohybuj\u00ed ve stejn\u00e9m prost\u0159ed\u00ed, budou se pohybovat stejnou rychlost\u00ed. V dne\u0161n\u00edm \u010dl\u00e1nku se bl\u00ed\u017ee pod\u00edv\u00e1me na Doppler\u016fv jev &#8211; jev, kter\u00fd je snadno pozorovateln\u00fd, ale o n\u011bco obt\u00ed\u017en\u011bji se vysv\u011btluje, o co vlastn\u011b jde.<\/strong>\n<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2ef1564 elementor-widget elementor-widget-heading\" data-id=\"2ef1564\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Co je to Doppler\u016fv jev? <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-062235c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"062235c\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-80ebfb5\" data-id=\"80ebfb5\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d4693d0 elementor-widget elementor-widget-text-editor\" data-id=\"d4693d0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>V roce 1842 rakousk\u00fd fyzik a matematik <strong>Christian Doppler<\/strong> pozoroval, \u017ee <strong>barva sv\u011bteln\u00e9ho t\u011blesa, tj. frekvence vyza\u0159ovan\u00e9ho z\u00e1\u0159en\u00ed, se m\u011bn\u00ed s relativn\u00edm pohybem pozorovatele nebo zdroje<\/strong>. Doppler\u016fv jev pozorujeme v\u017edy, kdy\u017e se zdroj vln\u011bn\u00ed pohybuje vzhledem k pozorovateli. Lze je popsat jako efekt zp\u016fsoben\u00fd pohybuj\u00edc\u00edm se zdrojem t\u011bchto vln, kdy doch\u00e1z\u00ed ke zd\u00e1nliv\u00e9mu frekven\u010dn\u00edmu posunu pro pozorovatele, ke kter\u00fdm se jejich zdroj bl\u00ed\u017e\u00ed, a ke zd\u00e1nliv\u00e9mu frekven\u010dn\u00edmu posunu pro pozorovatele, od kter\u00fdch se vzdaluje. H\u00e1\u010dek je v tom, \u017ee tento efekt nen\u00ed zp\u016fsoben skute\u010dnou zm\u011bnou frekvence zdroje, ale pouze na\u0161\u00ed zku\u0161enost\u00ed, respektive vn\u00edm\u00e1n\u00edm.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-91a6dc2\" data-id=\"91a6dc2\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-024b7bf elementor-widget elementor-widget-image\" data-id=\"024b7bf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"259\" height=\"326\" src=\"https:\/\/botland.cz\/blog\/wp-content\/uploads\/2023\/06\/Cdoppler.jpg\" class=\"attachment-large size-large wp-image-64651\" alt=\"\" srcset=\"https:\/\/botland.cz\/blog\/wp-content\/uploads\/2023\/06\/Cdoppler.jpg 259w, https:\/\/botland.cz\/blog\/wp-content\/uploads\/2023\/06\/Cdoppler-238x300.jpg 238w\" sizes=\"(max-width: 259px) 100vw, 259px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Christian Andreas Doppler - rakousk\u00fd fyzik a matematik. Zdroj: https:\/\/pl.wikipedia.org\/wiki\/Christian_Andreas_Doppler<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-bc1f200 elementor-widget elementor-widget-text-editor\" data-id=\"bc1f200\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Vzor vytvo\u0159en\u00fd hrdinou z \u00favodu \u010dl\u00e1nku, kter\u00fd t\u0159ese nohama, by byl <strong>\u0159adou soust\u0159edn\u00fdch kruh\u016f<\/strong>. Tyto kruhy by dos\u00e1hly okraj\u016f lou\u017ee se stejnou frekvenc\u00ed, tj. pozorovatel A stoj\u00edc\u00ed vlevo zaznamen\u00e1 &#8220;poruchu&#8221; dopadaj\u00edc\u00ed na okraj lou\u017ee se stejnou frekvenc\u00ed, jakou m\u016f\u017ee pozorovat pozorovatel B na druh\u00e9 stran\u011b. Ve skute\u010dnosti je tedy frekvence, p\u0159i kter\u00e9 ru\u0161en\u00ed dos\u00e1hne okraje lou\u017ee, stejn\u00e1 jako frekvence, p\u0159i kter\u00e9 je ru\u0161en\u00ed generov\u00e1no. Jestli\u017ee \u00fadery \u010derv\u00edch nohou vytv\u00e1\u0159ej\u00ed interferenci s frekvenc\u00ed dv\u011b za sekundu, pak si ka\u017ed\u00fd pozorovatel v\u0161imne, \u017ee se bl\u00ed\u017e\u00ed pr\u00e1v\u011b dv\u011bma za sekundu.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-88b659d elementor-widget elementor-widget-spacer\" data-id=\"88b659d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e65c845 elementor-widget elementor-widget-heading\" data-id=\"e65c845\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Doppler\u016fv jev a pohyb - p\u0159\u00edklad<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-824e9e9 elementor-widget elementor-widget-text-editor\" data-id=\"824e9e9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>P\u0159edpokl\u00e1dejme, \u017ee se n\u00e1\u0161 \u010derv vydal na v\u00fdlet. Pohybuje se p\u0159\u00edmo pod\u00e9l lou\u017ee a vytv\u00e1\u0159\u00ed interferenci se stejnou frekvenc\u00ed dv\u011b za sekundu. Jak se pohybuje doprava, ve\u0161ker\u00e9 n\u00e1sledn\u00e9 ru\u0161en\u00ed poch\u00e1z\u00ed z polohy bl\u00ed\u017ee k pozorovateli B (vpravo) a d\u00e1le od pozorovatele A (vlevo). V d\u016fsledku toho mus\u00ed ka\u017ed\u00e1 n\u00e1sleduj\u00edc\u00ed porucha urazit krat\u0161\u00ed vzd\u00e1lenost, ne\u017e doraz\u00ed k pozorovateli B, tak\u017ee trv\u00e1 krat\u0161\u00ed dobu, ne\u017e porucha doraz\u00ed k pozorovateli B.<\/p>\n<p>Na druhou stranu mus\u00ed ka\u017ed\u00e1 n\u00e1sleduj\u00edc\u00ed porucha urazit v\u011bt\u0161\u00ed vzd\u00e1lenost, ne\u017e se dostane k pozorovateli A. Z tohoto d\u016fvodu pozoruje pozorovatel A frekvenci v\u00fdskytu poruchy, kter\u00e1 je ni\u017e\u0161\u00ed ne\u017e frekvence, s n\u00ed\u017e je porucha vyvol\u00e1na.<\/p>\n<p> <strong>Vliv pohybu brouka<\/strong> (zdroje vln) spo\u010d\u00edv\u00e1 v tom, \u017ee pozorovatel, ke kter\u00e9mu se brouk pohybuje, pozoruje frekvenci vy\u0161\u0161\u00ed ne\u017e dv\u011b poruchy za sekundu a pozorovatel, od kter\u00e9ho se brouk vzdaluje, pozoruje frekvenci ni\u017e\u0161\u00ed ne\u017e dv\u011b poruchy za sekundu.<\/p>\n<p>Nechme u\u017e toho brouka na pokoji. Pro ilustraci Dopplerova jevu na p\u0159\u00edkladu vodn\u00ed vlny si p\u0159edstavme, \u017ee jedeme motorov\u00fdm \u010dlunem po mo\u0159i. Vlny se k pob\u0159e\u017e\u00ed val\u00ed st\u00e1l\u00fdm tempem. Pokud lo\u010f pluje napr\u00e1zdno, vlny n\u00e1s budou m\u00edjet touto konstantn\u00ed rychlost\u00ed. Pokud ji v\u0161ak nasm\u011brujeme na otev\u0159en\u00e9 mo\u0159e, ke zdroji vln, budou n\u00e1s vlny m\u00edjet s v\u011bt\u0161\u00ed frekvenc\u00ed. Jin\u00fdmi slovy: <strong>z na\u0161eho pohledu se bude vlnov\u00e1 d\u00e9lka jevit krat\u0161\u00ed<\/strong>. Nyn\u00ed si p\u0159edstavte, \u017ee se lo\u010f vrac\u00ed ke b\u0159ehu &#8211; v tomto p\u0159\u00edpad\u011b se pohybuje sm\u011brem od zdroje vln, p\u0159i\u010dem\u017e ka\u017ed\u00e1 vlna m\u00edj\u00ed lo\u010f pomaleji. <strong>Z na\u0161eho pohledu se nyn\u00ed vlny zdaj\u00ed b\u00fdt del\u0161\u00ed!<\/strong> A\u0165 u\u017e \u0159\u00edd\u00edme sv\u016fj motorov\u00fd \u010dlun jak\u00fdmkoli sm\u011brem, mo\u0159sk\u00e9 vlny se nezm\u011bnily, zm\u011bnilo se na\u0161e vn\u00edm\u00e1n\u00ed.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f68406f elementor-widget elementor-widget-spacer\" data-id=\"f68406f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bd6c03f elementor-widget elementor-widget-heading\" data-id=\"bd6c03f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Doppler\u016fv jev - ka\u017edodenn\u00ed \u017eivot a p\u0159\u00edstroje<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-acbc696 elementor-widget elementor-widget-text-editor\" data-id=\"acbc696\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul style=\"font-size: 16px; background-color: #ffffff;\">\n<li style=\"font-size: 16px;\"><span style=\"font-weight: bolder;\">Sir\u00e9ny v nouzov\u00fdch vozidlech<\/span>. V\u0161ichni zn\u00e1me nejen &#8220;m\u011bn\u00edc\u00ed se&#8221; v\u00fd\u0161ku t\u00f3nu proj\u00ed\u017ed\u011bj\u00edc\u00edho auta se sir\u00e9nou, ale tak\u00e9 tento asi nej\u010dast\u011bji uv\u00e1d\u011bn\u00fd p\u0159\u00edklad Dopplerova jevu.<\/li>\n<li style=\"font-size: 16px;\"><span style=\"font-weight: bolder;\">Policejn\u00ed radar<\/span>. Tato mal\u00e1 zbra\u0148 vys\u00edl\u00e1 sign\u00e1l r\u00e1diov\u00fdch vln a p\u0159ij\u00edm\u00e1 stejn\u00fd sign\u00e1l odra\u017een\u00fd od c\u00edlov\u00e9ho objektu. Kdy\u017e se objekt k radaru p\u0159ibli\u017euje, je frekvence zp\u011btn\u00fdch vln vy\u0161\u0161\u00ed ne\u017e frekvence vys\u00edlan\u00fdch vln, a kdy\u017e se objekt vzdaluje, je frekvence ni\u017e\u0161\u00ed. P\u0159i ur\u010dov\u00e1n\u00ed tohoto rozd\u00edlu m\u016f\u017ee p\u0159\u00edstroj vypo\u010d\u00edtat a zobrazit rychlost objektu, od kter\u00e9ho se vlny odrazily.<\/li>\n<li style=\"font-size: 16px;\"><span style=\"font-weight: bolder;\">R\u00e1diov\u00fd (zbli\u017eovac\u00ed) zapalova\u010d<\/span>. Bezkontaktn\u00ed rozbu\u0161ka byla pr\u016flomem ve vojensk\u00e9 technologii za druh\u00e9 sv\u011btov\u00e9 v\u00e1lky, kter\u00fd p\u0159isp\u011bl k por\u00e1\u017ece n\u011bmeck\u00e9 arm\u00e1dy v Arden\u00e1ch. Jedn\u00e1 se o r\u00e1diov\u00fd vys\u00edla\u010d a p\u0159ij\u00edma\u010d pro detekci dr\u00e1hy objektu pomoc\u00ed Dopplerova jevu. Kdy\u017e se objekt p\u0159ibl\u00ed\u017eil dostate\u010dn\u011b bl\u00edzko, rozn\u011btka se aktivovala a n\u00e1lo\u017e c\u00edl zni\u010dila.<\/li>\n<li style=\"font-size: 16px;\"><span style=\"font-weight: bolder;\">Hudba<\/span>. Zvuk je nepatrn\u00e1 fluktuace tlaku vzduchu. Nejstar\u0161\u00ed zn\u00e1mou aplikac\u00ed Dopplerova jevu v oblasti hudby byl reproduktor Leslie spojen\u00fd s Hammondovy varhany. Samotn\u00e9 varhany, a\u010dkoli se st\u00e1le snadno pou\u017e\u00edvaj\u00ed, byly vytvo\u0159eny v roce 1935 a v digit\u00e1ln\u00ed hudebn\u00ed sf\u00e9\u0159e se Doppler\u016fv efekt pou\u017e\u00edv\u00e1 ke zlep\u0161en\u00ed kvality zvuku &#8211; je na n\u011bm zalo\u017eeno mnoho plug-in\u016f a efekt\u016f.<\/li>\n<li style=\"font-size: 16px;\"><span style=\"font-weight: bolder;\">Echokardiogram<\/span>. L\u00e9ka\u0159sk\u00fd p\u0159\u00edstroj pou\u017e\u00edvan\u00fd k ur\u010den\u00ed sm\u011bru a rychlosti pr\u016ftoku krve. Doppler\u016fv jev se zde uplat\u0148uje na ultrazvukov\u00e9 vlny, kter\u00e9 ur\u010duj\u00ed rychlost a sm\u011br proud\u00edc\u00ed krve. Stejn\u011b jako se rychlost pohybuj\u00edc\u00edho se vozidla ur\u010duje pomoc\u00ed radaru, lze echokardiogram pou\u017e\u00edt k ur\u010den\u00ed rychlosti tekutiny m\u011b\u0159en\u00edm velikosti frekven\u010dn\u00edho posunu mezi vys\u00edlan\u00fdm a p\u0159ij\u00edman\u00fdm sign\u00e1lem. Krom\u011b toho se sm\u011br pohybu ur\u010duje podle toho, zda je Doppler\u016fv posun kladn\u00fd nebo z\u00e1porn\u00fd.<\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-4613e9a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4613e9a\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-f855f5e\" data-id=\"f855f5e\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0bb3fd4 elementor-widget elementor-widget-image\" data-id=\"0bb3fd4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"493\" src=\"https:\/\/botland.cz\/blog\/wp-content\/uploads\/2023\/06\/07561_4_kwadrata-1-1024x631.jpg\" class=\"attachment-large size-large wp-image-64659\" alt=\"\" srcset=\"https:\/\/botland.cz\/blog\/wp-content\/uploads\/2023\/06\/07561_4_kwadrata-1-1024x631.jpg 1024w, https:\/\/botland.cz\/blog\/wp-content\/uploads\/2023\/06\/07561_4_kwadrata-1-300x185.jpg 300w, https:\/\/botland.cz\/blog\/wp-content\/uploads\/2023\/06\/07561_4_kwadrata-1-768x474.jpg 768w, https:\/\/botland.cz\/blog\/wp-content\/uploads\/2023\/06\/07561_4_kwadrata-1.jpg 1080w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Mikrovlnn\u00fd detektor pohybu HB100 - Doppler\u016fv jev.<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b77c315 elementor-align-center elementor-widget elementor-widget-button\" data-id=\"b77c315\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/botland.cz\/pohybove-senzory\/7561-mikrovlnny-snimac-pohybu-hb100-doppleruv-efekt-5903351249843.html\" target=\"_blank\" data-wpel-link=\"internal\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">POD\u00cdVEJTE SE NA<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-cc7c06d\" data-id=\"cc7c06d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7107bbc elementor-widget elementor-widget-text-editor\" data-id=\"7107bbc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul style=\"font-size: 16px; background-color: #ffffff;\">\n<li style=\"font-size: 16px;\"><span style=\"font-weight: bolder;\">Dopplerovsk\u00fd pr\u016ftokom\u011br &#8211; ADCP<\/span> (Acoustic Doppler Current Profiler). Za\u0159\u00edzen\u00ed je podobn\u00e9 sonaru, kter\u00fd se pou\u017e\u00edv\u00e1 k m\u011b\u0159en\u00ed rychlosti proud\u011bn\u00ed vody v r\u016fzn\u00fdch hloubk\u00e1ch pomoc\u00ed Dopplerova jevu pro zvukov\u00e9 vlny rozpt\u00fdlen\u00e9 \u010d\u00e1sticemi ve vodn\u00edm sloupci.<\/li>\n<li style=\"font-size: 16px;\"><span style=\"font-weight: bolder;\"><a href=\"https:\/\/botland.cz\/pohybove-senzory\/7561-mikrovlnny-snimac-pohybu-hb100-doppleruv-efekt-5903351249843.html\" data-wpel-link=\"internal\">Senzory pohybu v elektronice<\/a><\/span>. Mal\u00e9 dopplerovsk\u00e9 radary umo\u017e\u0148uj\u00ed p\u0159esn\u00e9 m\u011b\u0159en\u00ed vzd\u00e1lenosti a detekci pohybu. Tato za\u0159\u00edzen\u00ed vyu\u017e\u00edvaj\u00ed Doppler\u016fv jev, kter\u00fd funguje na z\u00e1klad\u011b anal\u00fdzy frekvenc\u00ed vln generovan\u00fdch a p\u0159ij\u00edman\u00fdch ant\u00e9nami RX a TX &#8211; podobn\u011b jako v p\u0159edchoz\u00edch p\u0159\u00edkladech, pouze se m\u011bn\u00ed aplikace.<\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-744124d elementor-widget elementor-widget-spacer\" data-id=\"744124d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6ef8021 elementor-widget elementor-widget-heading\" data-id=\"6ef8021\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Doppler\u016fv jev v astronomii<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-826da5a elementor-widget elementor-widget-text-editor\" data-id=\"826da5a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Pochopen\u00ed Dopplerova jevu je u\u017eite\u010dn\u00e9 v mnoha r\u016fzn\u00fdch v\u011bdn\u00edch oborech &#8211; <strong>dokonce i ve v\u011bd\u011b o planet\u00e1ch a jin\u00fdch nebesk\u00fdch t\u011blesech<\/strong>. Astronomov\u00e9 se p\u0159i detekci <strong>exoplanet,<\/strong> tj. planet mimo na\u0161i slune\u010dn\u00ed soustavu, spol\u00e9haj\u00ed na Doppler\u016fv jev. Doposud bylo pomoc\u00ed Dopplerova jevu p\u0159esn\u011b detekov\u00e1no 442 ze 473 zn\u00e1m\u00fdch exoplanet a odtud je jen kr\u016f\u010dek k z\u00edsk\u00e1n\u00ed podrobn\u011bj\u0161\u00edch informac\u00ed o t\u011bchto sv\u011btech.<\/p>\n<p>Zdrojem zkouman\u00e9ho vln\u011bn\u00ed m\u016f\u017ee b\u00fdt i <strong>hv\u011bzda,<\/strong> kter\u00e1 vyza\u0159uje elektromagnetick\u00e9 vlny. Z na\u0161eho pohledu doch\u00e1z\u00ed k Dopplerov\u00fdm posun\u016fm, kdy\u017e hv\u011bzda ob\u00edh\u00e1 kolem vlastn\u00edho st\u0159edu hmoty a pohybuje se sm\u011brem k Zemi nebo od n\u00ed. Tyto posuny vlnov\u00e9 d\u00e9lky lze pozorovat jako jemn\u00e9 zm\u011bny v jeho spektru neboli &#8220;duhov\u00e9 barvy&#8221; vyza\u0159ovan\u00e9 ve sv\u011btle. Jak se k n\u00e1m hv\u011bzda p\u0159ibli\u017euje, jej\u00ed vlny se stla\u010duj\u00ed a jej\u00ed spektrum je o n\u011bco mod\u0159ej\u0161\u00ed. Jak se od n\u00e1s hv\u011bzda vzdaluje, jej\u00ed spektrum je o n\u011bco \u010derven\u011bj\u0161\u00ed.<\/p>\n<p>Doppler\u016fv jev dokonce pomohl <strong>objevit planetu v soustav\u011b se dv\u011bma slunci<\/strong> &#8211; Objev zp\u016fsobil v \u00fanoru 2022 zna\u010dn\u00fd rozruch a planeta, <strong>Kepler 16-b<\/strong>, byla p\u0159irovn\u00e1na k planet\u011b Tatooine, kter\u00e1 je domovem Luka Skywalkera z vesm\u00edrem <em>Hv\u011bzdn\u00fdch v\u00e1lek.<\/em> Nach\u00e1z\u00ed se asi 245 sv\u011bteln\u00fdch let od Zem\u011b, je to plynn\u00fd obr a je velk\u00fd zhruba jako Saturn.<\/p>\n<p>Mohl Christian Doppler v polovin\u011b 19. stolet\u00ed sn\u00edt o tom, \u017ee jeho pr\u00e1ce bude m\u00edt tak v\u00fdznamn\u00fd p\u0159\u00ednos pro v\u00fdzkum vesm\u00edru? V tomto p\u0159\u00edpad\u011b se t\u0159epot mot\u00fdl\u00edch k\u0159\u00eddel dostal a\u017e do astronomick\u00fdch laborato\u0159\u00ed a v pr\u016fb\u011bhu stalet\u00ed nezp\u016fsobil ani tak torn\u00e1do, jako sp\u00ed\u0161e skute\u010dn\u00fd v\u011bdeck\u00fd pr\u016flom.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5213239 elementor-widget elementor-widget-html\" data-id=\"5213239\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div id=\"blog_carousel\"><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Doppler\u016fv jev je v\u0161ude. Mnoz\u00ed znaj\u00ed z\u00e1klady s n\u00edm spojen\u00e9, ale dnes se bl\u00ed\u017ee pod\u00edv\u00e1me na to, co to vlastn\u011b je a jak\u00fd p\u0159\u00ednos m\u00e1 pro lidstvo.<\/p>\n","protected":false},"author":21,"featured_media":64875,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[549,557],"tags":[],"class_list":["post-65223","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kompendium-cs","category-zajimavosti"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Doppler\u016fv jev - co to je a kde ho hledat? - Botland<\/title>\n<meta name=\"description\" content=\"Co je to Doppler\u016fv jev? 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