[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.ziris.cz\/nahlednuti-do-fyziky-energie\/#Article","mainEntityOfPage":"https:\/\/www.ziris.cz\/nahlednuti-do-fyziky-energie\/","headline":"Nahl\u00e9dnut\u00ed do fyziky – Energie","name":"Nahl\u00e9dnut\u00ed do fyziky – Energie","description":"Energie je schopnost konat ur\u010ditou pr\u00e1ci, anebo m\u011bnit n\u011bjak\u00fd stav. M\u016f\u017ee n\u011b\u010d\u00edm pohybovat, n\u011bco zah\u0159\u00edvat \u010di naopak ochlazovat, apod. V\u00fdsledkem \u010dinnosti energie je pr\u00e1ce – p\u0159em\u011bna energie na jinou. T\u00edm je \u0159e\u010deno, \u017ee energie existuje v\u00a0r\u016fzn\u00fdch form\u00e1ch a p\u0159i fyzik\u00e1ln\u00edch zm\u011bn\u00e1ch se transformuje na jin\u00fd druh. Energie se nijak nevytv\u00e1\u0159\u00ed ani nezanik\u00e1, pouze m\u011bn\u00ed svoji","datePublished":"2020-02-05","dateModified":"2020-02-05","author":{"@type":"Person","@id":"https:\/\/www.ziris.cz\/author\/devene\/#Person","name":"devene","url":"https:\/\/www.ziris.cz\/author\/devene\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/a6945111a6684c356ffa2edea93eeeab9450e38d2439d8ecd0a625f734db9218?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/a6945111a6684c356ffa2edea93eeeab9450e38d2439d8ecd0a625f734db9218?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"ziris.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.ziris.cz\/wp-content\/uploads\/img_a371477_w4219_t1582869257.jpg","url":"https:\/\/www.ziris.cz\/wp-content\/uploads\/img_a371477_w4219_t1582869257.jpg","height":0,"width":0},"url":"https:\/\/www.ziris.cz\/nahlednuti-do-fyziky-energie\/","about":["V\u011bda"],"wordCount":398,"articleBody":"Energie je schopnost konat ur\u010ditou pr\u00e1ci, anebo m\u011bnit n\u011bjak\u00fd stav. M\u016f\u017ee n\u011b\u010d\u00edm pohybovat, n\u011bco zah\u0159\u00edvat \u010di naopak ochlazovat, apod. V\u00fdsledkem \u010dinnosti energie je pr\u00e1ce – p\u0159em\u011bna energie na jinou. T\u00edm je \u0159e\u010deno, \u017ee energie existuje v\u00a0r\u016fzn\u00fdch form\u00e1ch a p\u0159i fyzik\u00e1ln\u00edch zm\u011bn\u00e1ch se transformuje na jin\u00fd druh. Energie se nijak nevytv\u00e1\u0159\u00ed ani nezanik\u00e1, pouze m\u011bn\u00ed svoji formu. Jedn\u00e1 se o z\u00e1kon zachov\u00e1n\u00ed energie, kter\u00fd je z\u00e1kladn\u00edm principem fyziky makrosv\u011bta. Na tom je zalo\u017eeno velk\u00e9 mno\u017estv\u00ed technologi\u00ed.\tVnit\u0159n\u00ed energie a teplo\tKa\u017ed\u00e9 t\u011bleso ve vesm\u00edru je tvo\u0159eno \u010d\u00e1sticemi, kter\u00e9 se neust\u00e1le a neuspo\u0159\u00e1dan\u011b pohybuj\u00ed.\u00a0 Ka\u017ed\u00e1 molekul\u00e1rn\u00ed soustava m\u00e1 tud\u00ed\u017e ur\u010ditou vnit\u0159n\u00ed energii. \u00a0Ta souvis\u00ed s\u00a0vnit\u0159n\u00ed \u010d\u00e1sticovou strukturou a vytv\u00e1\u0159\u00ed ji pohyb \u010di vibrace atom\u016f a molekul. \u00a0P\u0159i n\u00e1hodn\u00e9m pohybu molekul vznik\u00e1 kinetick\u00e1 energie, a s\u00edla, kterou na sebe molekuly p\u016fsob\u00ed (vz\u00e1jemn\u00e1 interakce) se naz\u00fdv\u00e1 potenci\u00e1ln\u00ed energie. Sou\u010det kinetick\u00e9 energie a celkov\u00e9 potenci\u00e1ln\u00ed energie t\u011bchto \u010d\u00e1stic se naz\u00fdv\u00e1 vnit\u0159n\u00ed energie. \u00a0\u010c\u00edm rychleji se \u010d\u00e1stice pohybuj\u00ed, t\u00edm v\u011bt\u0161\u00ed vnit\u0159n\u00ed energii t\u011bleso m\u00e1. Vznik\u00e1 teplo a p\u0159edm\u011bt se za\u010dne zah\u0159\u00edvat. Vnit\u0159n\u00ed energii lze m\u011bnit nap\u0159\u00edklad t\u0159en\u00edm t\u011bles, oh\u0159\u00edv\u00e1n\u00edm \u010di ochlazov\u00e1n\u00edm. Jednotkou pro vnit\u0159n\u00ed energii je joule.\t\tZvukov\u00e1 energie\tZvukov\u00e1 energie je druh tlakov\u00fdch vln \u2013 mechanick\u00e9 vlny se \u0161\u00ed\u0159\u00ed z\u00a0n\u011bjak\u00e9ho zdroje a proch\u00e1zej\u00ed vzduchem. Kdy\u017e lidsk\u00e9 ucho tyto pod\u00e9ln\u00e9 vlny zachyt\u00ed, jsou p\u0159evedeny na elektrick\u00e9 impulzy, putuj\u00edc\u00ed do mozku a ten je vyhodnot\u00ed jako zvuky. Hlasitost zvuku z\u00e1vis\u00ed na velikosti zm\u011bny tlaku vzduchu a v\u00fd\u0161ka zvuku z\u00e1le\u017e\u00ed na tom, jak rychle n\u00e1sleduj\u00ed vlny za sebou, tj. na frekvenci vln\u011bn\u00ed. T\u00f3ny s\u00a0n\u00edzkou frekvenc\u00ed se naz\u00fdvaj\u00ed infrazvuk, s\u00a0vy\u0161\u0161\u00ed frekvenc\u00ed ultrazvuk. Rychlost zvuku z\u00e1le\u017e\u00ed na prost\u0159ed\u00ed, kter\u00e9 ho p\u0159en\u00e1\u0161\u00ed a na jeho hustot\u011b \u2013 v\u00a0nulov\u00e9 nadmo\u0159sk\u00e9 v\u00fd\u0161ce se zvuk pohybuje rychlost\u00ed p\u0159ibli\u017en\u011b 340 m\/sec (1224 km za hodinu), ve v\u011bt\u0161\u00ed nadmo\u0159sk\u00e9 v\u00fd\u0161ce je jeho pohyb pomalej\u0161\u00ed. Ve vod\u011b se ale \u0161\u00ed\u0159\u00ed 5x rychleji.                                                                                                                                                                                                                                                                                                                                                                                        5\/5 - (3 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Nahl\u00e9dnut\u00ed do fyziky – Energie","item":"https:\/\/www.ziris.cz\/nahlednuti-do-fyziky-energie\/#breadcrumbitem"}]}]