[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.inovac.cz\/od-pocitadla-blesku-ke-krystalce\/#Article","mainEntityOfPage":"https:\/\/www.inovac.cz\/od-pocitadla-blesku-ke-krystalce\/","headline":"Od po\u010d\u00edtadla blesk\u016f ke krystalce","name":"Od po\u010d\u00edtadla blesk\u016f ke krystalce","description":"Jm\u00e9no rusk\u00e9ho fyzika Alexandra Popova u\u017e dnes asi mnoh\u00fdm nic ne\u0159ekne. P\u0159itom to byl pr\u016fkopn\u00edk v oblasti bezdr\u00e1tov\u00e9ho vys\u00edl\u00e1n\u00ed radiov\u00fdch sign\u00e1l\u016f. Psal se rok 1895, kdy v Rusku p\u0159edv\u00e1d\u00ed fyzik Popov sv\u00fdm koleg\u016fm zaj\u00edmav\u00fd p\u0159istroj, kter\u00fd m\u00e1 za \u00fakol zaznamen\u00e1vat blesky. &#8211;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 P\u0159i prezentaci zjist\u00ed, \u017ee jeho vyn\u00e1lez m\u016f\u017ee slou\u017eit i k vys\u00edl\u00e1n\u00ed r\u00e1diov\u00fdch sign\u00e1l\u016f.&hellip; <a class=\"read-more\" href=\"https:\/\/www.inovac.cz\/od-pocitadla-blesku-ke-krystalce\/\">\u010c\u00edst d\u00e1le<\/a>","datePublished":"2025-02-26","dateModified":"2023-05-05","author":{"@type":"Person","@id":"https:\/\/www.inovac.cz\/author\/#Person","name":"inovac.cz\n","url":"https:\/\/www.inovac.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/baa231f7e1963b29d6549eb0e137b049d877d4e97c51386f463c7d4fc98329bd?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/baa231f7e1963b29d6549eb0e137b049d877d4e97c51386f463c7d4fc98329bd?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"inovac.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.inovac.cz\/wp-content\/uploads\/img_a312152_w2228_t1523176921.png","url":"https:\/\/www.inovac.cz\/wp-content\/uploads\/img_a312152_w2228_t1523176921.png","height":0,"width":0},"url":"https:\/\/www.inovac.cz\/od-pocitadla-blesku-ke-krystalce\/","about":["Elektro"],"wordCount":401,"articleBody":"Jm\u00e9no rusk\u00e9ho fyzika Alexandra Popova u\u017e dnes asi mnoh\u00fdm nic ne\u0159ekne. P\u0159itom to byl pr\u016fkopn\u00edk v oblasti bezdr\u00e1tov\u00e9ho vys\u00edl\u00e1n\u00ed radiov\u00fdch sign\u00e1l\u016f. Psal se rok 1895, kdy v Rusku p\u0159edv\u00e1d\u00ed fyzik Popov sv\u00fdm koleg\u016fm zaj\u00edmav\u00fd p\u0159istroj, kter\u00fd m\u00e1 za \u00fakol zaznamen\u00e1vat blesky.&#8211;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 P\u0159i prezentaci zjist\u00ed, \u017ee jeho vyn\u00e1lez m\u016f\u017ee slou\u017eit i k vys\u00edl\u00e1n\u00ed r\u00e1diov\u00fdch sign\u00e1l\u016f.O rok pozd\u011bji provede dal\u0161\u00ed pokus. Tentokr\u00e1t je to prvn\u00ed ve\u0159ejn\u00e9 p\u0159edveden\u00ed r\u00e1diov\u00e9ho vys\u00edl\u00e1n\u00ed. Vzd\u00e1lenost sice nijak z\u00e1vratn\u00e1 nen\u00ed, ale ur\u010dit\u011b je to velk\u00fd pokrok. Vys\u00edl\u00e1n\u00ed prob\u00edhalo na vzd\u00e1lenost dvou set pades\u00e1ti metr\u016f. A co vlastn\u011b Popov vys\u00edlal?\u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 P\u00e1r sign\u00e1l\u016f v Morseov\u011b abeced\u011b.\u00a0\u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 P\u0159esto\u017ee nic slo\u017eit\u00e9ho, sklidil velk\u00fd aplaus.Ud\u011blal v\u0161ak jednu z\u00e1sadn\u00ed chybu \u2013 nenechal si sv\u016fj vyn\u00e1lez patentovat.T\u00e9to jeho zapom\u011btlivosti vyu\u017eil Ital Guglielmo Marconi, kter\u00fd v roce 1906 dokonce za tento vyn\u00e1lez dostal presti\u017en\u00ed Nobelovu cenu. Uplynul dal\u0161\u00ed rok a vy\u0165uk\u00e1v\u00e1n\u00ed morseovky nahradil lidsk\u00fd hlas. Jeden \u0159\u00edmsk\u00fd profesor zkou\u0161\u00ed pomoc\u00ed r\u00e1dia telefonovat. Vzd\u00e1lenost se od prvn\u00edho pokusu o mnoho zv\u011bt\u0161ila \u2013 jsou to cel\u00e9 \u010dty\u0159i kilometry.\tPrvn\u00ed byla CarmenNetrvalo dlouho a z r\u00e1dia se za\u010daly oz\u00fdvat prvn\u00ed zvuky hudby. Lid\u00e9 si jako prvn\u00ed mohli poslechnout p\u0159enos opery Carmen z Metropolitn\u00ed opery v New Yorku. Vys\u00edl\u00e1n\u00ed rozhlasu se dostalo brzy i k n\u00e1m. Jen to m\u011blo jeden mal\u00fd h\u00e1\u010dek.&#8211;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Radiop\u0159ij\u00edma\u010de byly velice drah\u00e9 a hned tak n\u011bkdo si je dovolit nemohl.&#8211;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 P\u0159esto se v\u0161ude psalo i mluvilo o velk\u00e9m pokroku, kter\u00fd se stal osmn\u00e1ct\u00e9ho kv\u011btna roku 1923.&#8211;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 V pra\u017esk\u00fdch Kbel\u00edch je instalov\u00e1n skautsk\u00fd stan, ze kter\u00e9ho se ozve prvn\u00ed \u010desk\u00e9 vys\u00edl\u00e1n\u00ed.&#8211;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Ozve se Radio\u017eurn\u00e1l.Vys\u00edl\u00e1n\u00ed vypadalo tak, \u017ee hlasatel n\u011bco m\u00e1lo \u0159ekl a pak ho vyst\u0159\u00eddalo n\u011bkolik p\u00edsn\u00ed. Kdy\u017e se p\u0159i\u0161lo na to, \u017ee r\u00e1dio lze sestrojit pomoc\u00ed oby\u010dejn\u00e9ho krystalu galenitu, klesly kone\u010dn\u011b ceny natolik, \u017ee si \u201ekrystalku\u201c mohl koupit v\u011bt\u0161\u00ed po\u010det poslucha\u010d\u016f.                                                                                                                                                                                                                                                                                                                                                                                        4.7\/5 - (12 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Od po\u010d\u00edtadla blesk\u016f ke krystalce","item":"https:\/\/www.inovac.cz\/od-pocitadla-blesku-ke-krystalce\/#breadcrumbitem"}]}]