{"id":55161,"date":"2025-10-30T04:46:07","date_gmt":"2025-10-29T19:46:07","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=55161"},"modified":"2025-10-30T04:46:07","modified_gmt":"2025-10-29T19:46:07","slug":"miksi-paino-liikkuu-opi-sahkon-ihmeista-ja-maadoituksen-salaisuudesta-sahkostaattisen-kellon-avulla","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=55161&lang=fi","title":{"rendered":"Miksi paino liikkuu? Opi s\u00e4hk\u00f6n ihmeist\u00e4 ja maadoituksen salaisuudesta \u201cS\u00e4hk\u00f6staattisen kellon\u201d avulla"},"content":{"rendered":"<p style=\"text-align: center;\"><strong style=\"color: #339966;\">Olen Ken Kuwako, tiedekouluttaja. Joka p\u00e4iv\u00e4 on koe.<\/strong><\/p>\n<p>Oletko koskaan talvella tuntenut sen tutun, ik\u00e4v\u00e4n &#8220;S\u00c4H&#8221;-iskun tarttuessasi ovenkahvaan? Se on tietysti staattinen s\u00e4hk\u00f6. Vaikka se on n\u00e4kym\u00e4t\u00f6nt\u00e4, se on todellinen voima! T\u00e4n\u00e4\u00e4n esittelen teille yksinkertaisen mutta syv\u00e4llisen kokeen, jonka tiedekerhon oppilaat kehittiv\u00e4t. Sen avulla t\u00e4m\u00e4 n\u00e4kym\u00e4t\u00f6n voima saadaan &#8220;n\u00e4kyv\u00e4ksi&#8221; ja jopa kuuluvaksi \u2013 se on &#8220;staattisen s\u00e4hk\u00f6n kello&#8221;!<\/p>\n<p>Mietitk\u00f6, mik\u00e4 ihme on &#8220;staattisen s\u00e4hk\u00f6n kello&#8221;? Aloitetaan katsomalla t\u00e4m\u00e4 video:<\/p>\n<p><iframe loading=\"lazy\" title=\"\u7a7a\u304d\u7f36\u3067\u4f5c\u308b\u9759\u96fb\u6c17\u30d9\u30eb\uff01\u300c\u306a\u308b\u307b\u3069\uff01\u300d\u3092\u5f15\u304d\u51fa\u3059\u5b9f\u9a13\u306e\u6975\u610f\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/MToFfziERpg?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p><span style=\"font-size: 14px;\">Emme vain soita kelloa, vaan syvennymme kysymykseen: &#8220;Miksi paino itse asiassa liikkuu?&#8221; T\u00e4m\u00e4 pieni, naputteleva kello kertoo meille &#8220;s\u00e4hk\u00f6n tarinan&#8221;, joka ulottuu aina salamoista kodin maadoitusjohtoihin asti. Koe tarjoaa loistavan tilaisuuden oppia kattavasti s\u00e4hk\u00f6st\u00e4, staattisen s\u00e4hk\u00f6n perusperiaatteista varauksen siirtoon, dielektriseen polarisaatioon ja maadoituksen merkitykseen.<\/span><\/p>\n<h3>Nap-nap! N\u00e4in staattisen s\u00e4hk\u00f6n kello toimii<\/h3>\n<p><span style=\"font-size: 14px;\">T\u00e4m\u00e4 kellokoe on eritt\u00e4in tehokas havainnollistamaan staattisen s\u00e4hk\u00f6n perusominaisuuksia, erityisesti varauksen siirtoa, s\u00e4hk\u00f6staattista voimaa (Coulombin voima) ja dielektrist\u00e4 polarisaatiota. Pureudutaanpa siihen mekanismiin, miksi paino liikkuu niin kiireisesti oikealle ja vasemmalle.<\/span><\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-49975\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.23.29.jpg\" alt=\"\" width=\"404\" height=\"241\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.23.29.jpg 1950w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.23.29-300x179.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.23.29-1024x611.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.23.29-768x458.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.23.29-1536x917.jpg 1536w\" sizes=\"auto, (max-width: 404px) 100vw, 404px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-49976 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.23.37.jpg\" alt=\"\" width=\"412\" height=\"252\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.23.37.jpg 1918w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.23.37-300x183.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.23.37-1024x626.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.23.37-768x469.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.23.37-1536x939.jpg 1536w\" sizes=\"auto, (max-width: 412px) 100vw, 412px\" \/><\/p>\n<h3>Vaihe 1: T\u00e4ydellinen valmistautuminen kokeeseen!<\/h3>\n<p><span style=\"font-size: 14px;\">Ensin tarvitaan muutama asia kokeen sujuvaan l\u00e4piviemiseen.<\/span><\/p>\n<ul>\n<li><strong>Kaksi metallista tyhj\u00e4\u00e4 t\u00f6lkki\u00e4<\/strong> (Nimet\u00e4\u00e4n ne A ja B. Samankokoiset t\u00f6lkit, esim. alumiinit\u00f6lkit, ovat k\u00e4tevi\u00e4.)<\/li>\n<li><strong>Heiluri\/Paino<\/strong> (Kevyt ja hyvin s\u00e4hk\u00f6\u00e4 johtava materiaali on ihanteellinen. Me k\u00e4ytimme mutteria. Ripustuslangan on hyv\u00e4 olla erist\u00e4v\u00e4\u00e4, esim. nailonia.)<\/li>\n<li><strong>Sy\u00f6m\u00e4puikot tai vastaava tanko<\/strong> (Heilurin ripustamiseen)<\/li>\n<li><strong>Staattisen s\u00e4hk\u00f6n generaattori<\/strong> (Esimerkiksi latauspistooli tai PVC-putki\/akryylilevy, jota hierotaan turkista tai talouspaperia vasten s\u00e4hk\u00f6n tuottamiseksi)<\/li>\n<li><strong>Johto tai kaapeli, jossa on klipsit<\/strong> (T\u00f6lkki B:n maadoittamiseen)<\/li>\n<\/ul>\n<p>Valmistelut:<\/p>\n<ol start=\"1\">\n<li><strong>Heilurin asennus:<\/strong> Kiinnit\u00e4 heiluri sy\u00f6m\u00e4puikkoon.<\/li>\n<li><strong>T\u00f6lkkien asettelu:<\/strong> Aseta heiluri t\u00f6lkkien A ja B v\u00e4liin.<\/li>\n<li><strong>Maadoituksen kytkeminen:<\/strong> Kiinnit\u00e4 johto tai kaapeli t\u00f6lkkiin B ja yhdist\u00e4 toinen p\u00e4\u00e4 p\u00f6yt\u00e4\u00e4n tai lattiaan (eli maadoitukseen). Yhteys vesiputkeen tai rakennuksen metalliosaan tehostaa maadoitusta.<\/li>\n<\/ol>\n<h3>Vaihe 2: Kokeen suoritus ja &#8220;Miksi?&#8221;-kysymyksen syvent\u00e4minen<\/h3>\n<p>Nyt p\u00e4\u00e4semme itse kokeeseen! K\u00e4yd\u00e4\u00e4n l\u00e4pi vaiheet ja samalla kurkistetaan taustalla olevaan fysiikkaan.<\/p>\n<p>Staattisen s\u00e4hk\u00f6n ker\u00e4\u00e4minen t\u00f6lkkiin A:<\/p>\n<p>Ohje: Tuo latauspistooli (oletetaan sen olevan negatiivisesti varautunut) l\u00e4helle t\u00f6lkki\u00e4 A. Negatiivisia elektroneja siirtyy pistoolista t\u00f6lkkiin A, jolloin t\u00f6lkki A varautuu negatiivisesti.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-49968 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.18.38.jpg\" alt=\"\" width=\"377\" height=\"231\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.18.38.jpg 1478w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.18.38-300x183.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.18.38-1024x626.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.18.38-768x470.jpg 768w\" sizes=\"auto, (max-width: 377px) 100vw, 377px\" \/><\/p>\n<p>Paino vet\u00e4ytyy t\u00f6lkki\u00e4 A kohti!:<\/p>\n<p>Ohje: Kun staattisesti varautunutta t\u00f6lkki\u00e4 A l\u00e4hestyy viel\u00e4 varautumaton heiluripaino, paino vet\u00e4ytyy t\u00f6lkki\u00e4 A kohti.<\/p>\n<p>T\u00e4ss\u00e4 esitell\u00e4\u00e4n dielektrisen polarisaation k\u00e4site. Painon vapaat elektronit (metallisen painon tapauksessa) hylkiv\u00e4t t\u00f6lkki A:n negatiivista varausta ja siirtyv\u00e4t kauemmas t\u00f6lkist\u00e4 A (eli B:n puolelle). T\u00e4m\u00e4n seurauksena painon A:ta l\u00e4himp\u00e4\u00e4n puoleen ker\u00e4\u00e4ntyy positiivinen varaus ja B:t\u00e4 l\u00e4himp\u00e4\u00e4n puoleen negatiivinen varaus. T\u00e4t\u00e4 ilmi\u00f6t\u00e4 kutsutaan &#8220;dielektriseksi polarisaatioksi&#8221;.<\/p>\n<p>&#8220;Eik\u00f6 niin, ett\u00e4 plussat ja miinukset vet\u00e4v\u00e4t toisiaan puoleensa?&#8221; T\u00f6lkki A:n negatiivisen varauksen ja painon A-puolelle kertyneen positiivisen varauksen v\u00e4lille syntyy vetovoima (s\u00e4hk\u00f6staattinen voima), joka vet\u00e4\u00e4 painon t\u00f6lkki\u00e4 A kohti.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-49969 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.18.52.jpg\" alt=\"\" width=\"377\" height=\"231\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.18.52.jpg 1470w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.18.52-300x184.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.18.52-1024x627.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.18.52-768x470.jpg 768w\" sizes=\"auto, (max-width: 377px) 100vw, 377px\" \/><\/p>\n<p>Paino l\u00e4htee t\u00f6lkki A:sta pois!<\/p>\n<p>Ohje: Kun paino koskettaa t\u00f6lkki\u00e4 A, se hylkii t\u00f6lkki\u00e4 A ja liikkuu poisp\u00e4in.<\/p>\n<p>Opettajan selityksen kulmakivi:<\/p>\n<p>&#8220;Miksi se l\u00e4htee pois, vaikka se juuri tarttui kiinni?&#8221;<\/p>\n<p>Kun paino koskettaa t\u00f6lkki\u00e4 A, negatiivisia elektroneja siirtyy t\u00f6lkist\u00e4 A painoon. T\u00e4m\u00e4n seurauksena paino varautuu my\u00f6s negatiivisesti.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-49970 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.19.00.jpg\" alt=\"\" width=\"386\" height=\"237\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.19.00.jpg 1472w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.19.00-300x184.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.19.00-1024x629.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.19.00-768x472.jpg 768w\" sizes=\"auto, (max-width: 386px) 100vw, 386px\" \/><\/p>\n<p>&#8220;Eik\u00f6 niin, ett\u00e4 samanlaiset varaukset hylkiv\u00e4t toisiaan?&#8221; Koska sek\u00e4 paino ett\u00e4 t\u00f6lkki A ovat nyt negatiivisesti varautuneita, ne synnytt\u00e4v\u00e4t hylkimisvoiman (s\u00e4hk\u00f6staattinen voima), ja paino alkaa liikkua pois t\u00f6lkist\u00e4 A kohti t\u00f6lkki\u00e4 B.<\/p>\n<p>Paino l\u00e4hestyy t\u00f6lkki\u00e4 B ja luovuttaa elektronit!<\/p>\n<p>Ohje: Negatiivisesti varautunut paino l\u00e4hestyy maadoitettua t\u00f6lkki\u00e4 B ja koskettaa sit\u00e4.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-49971 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.19.11.jpg\" alt=\"\" width=\"387\" height=\"239\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.19.11.jpg 1468w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.19.11-300x186.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.19.11-1024x633.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.19.11-768x475.jpg 768w\" sizes=\"auto, (max-width: 387px) 100vw, 387px\" \/><\/p>\n<p>&#8220;Mit\u00e4 tarkoittaa, ett\u00e4 t\u00f6lkki B on maadoitettu?&#8221; Maadoitus on tila, jossa laite on &#8220;yhteydess\u00e4 Maahan&#8221;. Maa on k\u00e4yt\u00e4nn\u00f6ss\u00e4 varauksen varasto. Koska maapallomme on valtava, voimme ajatella sit\u00e4 &#8220;s\u00e4hk\u00f6n j\u00e4ttisienen\u00e4&#8221;, joka voi vastaanottaa mink\u00e4 tahansa m\u00e4\u00e4r\u00e4n ylim\u00e4\u00e4r\u00e4isi\u00e4 elektroneja.<\/p>\n<p>&#8220;Paino on negatiivisesti varautunut, eik\u00f6 vain?&#8221; Painossa olevat ylim\u00e4\u00e4r\u00e4iset negatiiviset elektronit virtaavat t\u00f6lkki B:n kautta maahan. T\u00e4m\u00e4n seurauksena paino menett\u00e4\u00e4 varauksensa ja muuttuu neutraaliksi.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-49972 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.19.19.jpg\" alt=\"\" width=\"395\" height=\"243\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.19.19.jpg 1470w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.19.19-300x185.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.19.19-1024x631.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.19.19-768x473.jpg 768w\" sizes=\"auto, (max-width: 395px) 100vw, 395px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-49973 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.19.28.jpg\" alt=\"\" width=\"397\" height=\"244\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.19.28.jpg 1474w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.19.28-300x185.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.19.28-1024x631.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.19.28-768x473.jpg 768w\" sizes=\"auto, (max-width: 397px) 100vw, 397px\" \/><\/p>\n<p>Paino l\u00e4htee t\u00f6lkki B:st\u00e4 ja sykli toistuu!<\/p>\n<p>Ohje: Luovutettuaan elektroneja ja muututtuaan neutraaliksi paino siirtyy pois t\u00f6lkist\u00e4 B ja vet\u00e4ytyy taas t\u00f6lkki\u00e4 A kohti. T\u00e4m\u00e4 liikesarja toistuu. Aina kun paino koskettaa t\u00f6lkki\u00e4, kuuluu &#8220;nap, nap&#8230;&#8221;, mik\u00e4 tekee laitteesta kirjaimellisesti &#8220;staattisen s\u00e4hk\u00f6n kellon&#8221;!<\/p>\n<h3>Syvemp\u00e4\u00e4 oppimista: Tiedon karttumista<\/h3>\n<p>T\u00e4ll\u00e4 kokeella on muuten pitk\u00e4 historia! Amerikkalainen tiedemies, Benjamin Franklin, joka todisti salaman olevan s\u00e4hk\u00f6\u00e4 leijan avulla, kehitti laitteen nimelt\u00e4 &#8220;Franklinin kello&#8221;, joka soi salaman l\u00e4hestyess\u00e4. Sen periaate oli t\u00e4sm\u00e4lleen sama kuin t\u00e4ss\u00e4 staattisen s\u00e4hk\u00f6n kellossa. On j\u00e4nnitt\u00e4v\u00e4\u00e4 ajatella, kuinka pieni koe liittyy historiallisiin suuriin keksint\u00f6ihin! T\u00e4m\u00e4n kokeen avulla opit k\u00e4yt\u00e4nn\u00f6ss\u00e4 seuraavat t\u00e4rke\u00e4t fysiikan k\u00e4sitteet:<\/p>\n<ul>\n<li>Varausten tyypit ja ominaisuudet: Perusperiaate, jonka mukaan on olemassa positiivisia ja negatiivisia varauksia, ja ett\u00e4 eri varaukset vet\u00e4v\u00e4t toisiaan puoleensa, kun taas samanlaiset varaukset hylkiv\u00e4t toisiaan.<\/li>\n<li>S\u00e4hk\u00f6staattinen voima (Coulombin voima): Varauksien v\u00e4lill\u00e4 vaikuttava voima.<\/li>\n<li>Johteet ja eristeet: Johteiden (metallit\u00f6lkit ja paino), joissa varaukset voivat liikkua vapaasti, ja eristeiden (heilurin lanka), joissa ne liikkuvat huonosti, roolit.<\/li>\n<li>Dielektrinen polarisaatio: Ilmi\u00f6, jossa varautunut esine aiheuttaa varauksen ep\u00e4tasaisen jakautumisen (polarisaation) viel\u00e4 varautumattomassa johteessa (tai eristeess\u00e4).<\/li>\n<li>Maadoituksen (maan potentiaaliin kytkemisen) rooli: Mekanismi, jolla ylim\u00e4\u00e4r\u00e4inen varaus p\u00e4\u00e4stet\u00e4\u00e4n maahan, jolloin esine palautuu neutraaliksi tai turvallisuus varmistetaan. Esimerkiksi pesukoneissa ja mikroaaltouuneissa oleva vihre\u00e4 johto on juuri sama maadoitus. S\u00e4hk\u00f6vuodon sattuessa se ohjaa s\u00e4hk\u00f6n turvallisesti maahan ja est\u00e4\u00e4 meit\u00e4 saamasta s\u00e4hk\u00f6iskua. T\u00e4m\u00e4 pieni koe liittyy siis suureen mekanismiin, joka suojelee turvallisuuttamme!<\/li>\n<\/ul>\n<p>T\u00e4m\u00e4 staattisen s\u00e4hk\u00f6n kellokoe on loistava tilaisuus ymm\u00e4rt\u00e4\u00e4 syv\u00e4llisesti s\u00e4hk\u00f6n peruslait ja periaatteet pelk\u00e4n n\u00e4kyv\u00e4n ilmi\u00f6n sijaan. T\u00e4ss\u00e4 on toinen selitys kellokokeesta, jossa k\u00e4ytettiin Van de Graaffin generaattoria:<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"S5EIV6ky6O\"><p><a href=\"https:\/\/phys-edu.net\/wp\/?p=34876\">\u306a\u305c\u63fa\u308c\u7d9a\u3051\u308b\uff1f \u6c5f\u6238\u6642\u4ee3\u306e\u96fb\u6c17\u5b9f\u9a13\u300c\u81ea\u7136\u3068\u9418\u3092\u9cf4\u3089\u3059\u8853\u300d\u306e\u4ed5\u7d44\u307f\u3092\u5fb9\u5e95\u89e3\u8aac\uff01\uff08\u9759\u96fb\u6c17\u30d9\u30eb\uff09<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"&#8221;\u306a\u305c\u63fa\u308c\u7d9a\u3051\u308b\uff1f \u6c5f\u6238\u6642\u4ee3\u306e\u96fb\u6c17\u5b9f\u9a13\u300c\u81ea\u7136\u3068\u9418\u3092\u9cf4\u3089\u3059\u8853\u300d\u306e\u4ed5\u7d44\u307f\u3092\u5fb9\u5e95\u89e3\u8aac\uff01\uff08\u9759\u96fb\u6c17\u30d9\u30eb\uff09&#8221; &#8212; \u79d1\u5b66\u306e\u30cd\u30bf\u5e33\" src=\"https:\/\/phys-edu.net\/wp\/?p=34876&#038;embed=true#?secret=sV1rmFv5v7#?secret=S5EIV6ky6O\" data-secret=\"S5EIV6ky6O\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<h3>Yhteydenotto ja pyynn\u00f6t<\/h3>\n<p>Tehd\u00e4\u00e4n tieteen ihmeist\u00e4 ja hauskuudesta helpommin l\u00e4hestytt\u00e4v\u00e4\u00e4! Olen koonnut selke\u00e4sti kotona teht\u00e4vi\u00e4 hauskoja tiedekokeita ja niiden vinkkej\u00e4. Selaa vapaasti muita artikkeleita! \u30fbTietoa yll\u00e4pit\u00e4j\u00e4st\u00e4, Ken Kuwakosta, l\u00f6yd\u00e4t <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=37\">t\u00e4\u00e4lt\u00e4<\/a> \u30fbErilaiset pyynn\u00f6t (kirjoittaminen, luennot, kokeilupajat, TV-ohjaus, esiintymiset jne.) <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">t\u00e4\u00e4lt\u00e4<\/a> <span class=\"s2\">\u30fbArtikkelip\u00e4ivitykset julkaistaan <a href=\"https:\/\/x.com\/kuwako\">X:ss\u00e4<\/a>!<\/span><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/www.youtube.com\/user\/kkuwako\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-35048\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/03\/3d9640dad7bc5538e76f92da1966ee19.jpg\" alt=\"\" width=\"30\" height=\"21\" \/><\/a>Kokeiluvideoita julkaistaan kanavalla <a href=\"https:\/\/www.youtube.com\/user\/kkuwako?sub_confirmation=1\">Tieteen temput -kanava<\/a>!<\/p>\n<h3>\uff14\u6708\u306e\u30a4\u30c1\u30aa\u30b7\u5b9f\u9a13\uff01<\/h3>\r\n<ul>\r\n \t<li><a href=\"https:\/\/phys-edu.net\/wp\/?p=46937&amp;\">\u5149\u306e\u9b54\u6cd5CMY\u30a6\u30a9\u30fc\u30bf\u30fc\u30ad\u30e5\u30fc\u30d6<\/a>\uff1a\u5149\u306e\u9b54\u6cd5\u3092\u4f53\u9a13\u305b\u3088\uff01\u6c34\u3092\u6ce8\u3050\u3068\u65b0\u305f\u306a\u7acb\u65b9\u4f53\u304c\u51fa\u73fe\u3059\u308b\u9b54\u6cd5\u306e\u3088\u3046\u306a\u5b9f\u9a13\u3067\u3059\u3002<\/li>\r\n<\/ul>\r\n<img class=\"alignnone wp-image-47312 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/71274840332ac4ee4620fb1475a1d79c.jpg\" sizes=\"auto, (max-width: 267px) 100vw, 267px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/71274840332ac4ee4620fb1475a1d79c.jpg 1292w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/71274840332ac4ee4620fb1475a1d79c-272x300.jpg 272w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/71274840332ac4ee4620fb1475a1d79c-928x1024.jpg 928w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/71274840332ac4ee4620fb1475a1d79c-768x848.jpg 768w\" alt=\"\" width=\"267\" height=\"294\" \/>\r\n<h3 style=\"text-align: left;\"><span style=\"font-size: medium;\"><b><strong>\u30c6\u30ec\u30d3\u756a\u7d44\u30fb\u79d1\u5b66\u76e3\u4fee\u7b49\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/span><\/h3>\r\n<ul>\r\n \t<li>4\u67089\u65e5\uff08\u6728\uff09\u300cTHE\u7a81\u7834\u30d5\u30a1\u30a4\u30eb\u300d\uff08\u65e5\u672c\u30c6\u30ec\u30d3 \uff09\u306e\u79d1\u5b66\u76e3\u4fee\u3092\u884c\u3044\u307e\u3057\u305f\u3002\u591c7\u6642\u301c\u3068\u306a\u308a\u307e\u3059\u3002<\/li>\r\n<\/ul>\r\n<h3><span style=\"font-size: medium;\"><b>\u66f8\u7c4d<strong>\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/span><\/h3>\r\n<ul>\r\n \t<li><a href=\"https:\/\/phys-edu.net\/wp\/?p=61585\">\u30b5\u30af\u30bb\u30b915 \uff14\u6708\u53f7<\/a>\u306b\u3066\u3001\u91ce\u7403\u306e\u79d1\u5b66\u306b\u3064\u3044\u3066\u8a18\u4e8b\u3092\u57f7\u7b46\u3057\u307e\u3057\u305f\uff082026\/3\uff09<\/li>\r\n \t<li>\u300e\u5927\u4eba\u306e\u305f\u3081\u306e\u9ad8\u6821\u7269\u7406\u5fa9\u7fd2\u5e33\u300f\uff08\u8b1b\u8ac7\u793e\uff09\u2026\u4e00\u822c\u5411\u3051\u306b\u65e5\u5e38\u306e\u7269\u7406\u306b\u3064\u3044\u3066\u516c\u5f0f\u3092\u5143\u306b\u7d10\u89e3\u304d\u307e\u3057\u305f\u3002<a href=\"https:\/\/phys-edu.net\/wp\/?p=1827\">\u7279\u8a2d\u30b5\u30a4\u30c8<\/a>\u3067\u306f\u5b9f\u9a13\u3092\u591a\u6570\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<strong>\u203b\u5897\u5237\u304c\u304b\u304b\u308a\uff16\u5237\u3068\u306a\u308a\u307e\u3057\u305f\uff082026\/02\/01\uff09\r\n<img class=\"alignnone wp-image-10940 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0-300x262.jpg\" sizes=\"(max-width: 220px) 100vw, 220px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0-300x262.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0.jpg 311w\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2014-07-05 0.43.51\" width=\"220\" height=\"192\" \/>\r\n<\/strong><\/li>\r\n \t<li>\u300e\u304d\u3081\u308b!\u5171\u901a\u30c6\u30b9\u30c8 \u7269\u7406\u57fa\u790e \u6539\u8a02\u7248\u300f\uff08\u5b66\u7814\uff09\u2026\u3000\u9ad8\u6821\u7269\u7406\u306e\u53c2\u8003\u66f8\u3067\u3059\u3002\u30a4\u30e9\u30b9\u30c8\u3092\u591a\u304f\u3057\u3066\u30a4\u30e1\u30fc\u30b8\u304c\u6301\u3066\u308b\u3088\u3046\u306b\u63cf\u304d\u307e\u3057\u305f\u3002\u6388\u696d\u306b\u3064\u3044\u3066\u3044\u3051\u306a\u3044\u3001\u7269\u7406\u304c\u82e6\u624b\u3001\u305d\u3093\u306a\u751f\u5f92\u306b\u304a\u3059\u3059\u3081\u3067\u3059\u3002<a href=\"https:\/\/phys-edu.net\/wp\/?p=45322\">\u7279\u8a2d\u30b5\u30a4\u30c8<\/a>\u306f\u3053\u3061\u3089\u3002\r\n<img class=\"alignnone wp-image-45718 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c.jpg\" sizes=\"(max-width: 184px) 100vw, 184px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c.jpg 756w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c-300x269.jpg 300w\" alt=\"\" width=\"184\" height=\"165\" \/><\/li>\r\n<\/ul>\r\n<h3><span style=\"font-size: medium;\"><b>\u8b1b\u5e2b\u30fb\u30b7\u30e7\u30fc\u30fb\u7814\u7a76\u7b49\u306e\u304a\u77e5\u3089\u305b<\/b><\/span><\/h3>\r\n<ul>\r\n \t<li>3\/20\uff08\u91d1\uff09\u3000\u65e5\u672c\u7406\u79d1\u6559\u80b2\u5b66\u4f1a\u30aa\u30f3\u30e9\u30a4\u30f3\u5168\u56fd\u5927\u4f1a2026\u300c<a href=\"https:\/\/phys-edu.net\/wp\/?p=60439\">\u6163\u6027\u306e\u6cd5\u5247\u306e\u6982\u5ff5\u5f62\u6210\u3092\u76ee\u6307\u3057\u305f\u63a2\u7a76\u7684\u306a\u5b66\u3073\u306e\u5b9f\u8df5\u300d<\/a>\u306b\u3064\u3044\u3066\u767a\u8868\u3057\u307e\u3057\u305f\u3002<\/li>\r\n \t<li>6\/14\uff08\u65e5\uff09\u3000\u5343\u8449\u5927\u5b66\u30a4\u30f3\u30b9\u30bf\u30ec\u30fc\u30b7\u30e7\u30f3\u300c\u63a2\u7a76\u300d\u306b\u3066\u8b1b\u5e2b\u3092\u52d9\u3081\u307e\u3059<\/li>\r\n \t<li>7\/18\uff08\u571f\uff09\u3000<a href=\"https:\/\/phys-edu.net\/wp\/?p=60018\">\u6559\u54e1\u5411\u3051\u5b9f\u9a13\u8b1b\u7fd2\u4f1a\u300c\u30ca\u30ea\u30ab\u30ab\u30b5\u30a4\u30a8\u30f3\u30b9\u30a2\u30ab\u30c7\u30df\u30fc\u300d\u306e\u8b1b\u5e2b\u3092\u3057\u307e\u3059<\/a>\u3002\u304a\u4f1a\u3044\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\r\n \t<li>10\/10\uff08\u571f\uff09\u3000\u79d8\u5bc6\u5175\u5668\u300c\u5e2f\u96fb\u30ac\u30f3\u300d\u304c\u70b8\u88c2\uff01\u30d3\u30ea\u30d3\u30ea\uff01\u30c9\u30ad\u30c9\u30ad\uff01\u9759\u96fb\u6c17\u30b5\u30a4\u30a8\u30f3\u30b9\u30b7\u30e7\u30fc\uff20\u5343\u8449\u5e02\u79d1\u5b66\u30d5\u30a7\u30b9\u30bf\uff08\u5348\u5f8c\u4e88\u5b9a\uff09<\/li>\r\n \t<li><span style=\"text-align: center;\">\u5404\u7a2eSNS\u3000<\/span><a style=\"text-align: center;\" href=\"https:\/\/twitter.com\/kuwako\">X(Twitter)<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.instagram.com\/science_seeds\/\">instagram<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.facebook.com\/kuwakolab\/\">Facebook<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/bsky.app\/profile\/kagakunoneta.bsky.social\">BlueSky<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.threads.net\/@science_seeds?hl=ja\">Threads<\/a><\/li>\r\n<\/ul>\r\n<h3 style=\"text-align: center;\"><strong>Explore<\/strong><\/h3>\r\n<ul>\r\n \t<li><a href=\"https:\/\/phys-edu.net\/wp\/?page_id=30764\">\u697d\u3057\u3044\u5b9f\u9a13<\/a>\u2026\u304a\u5b50\u3055\u3093\u3068\u4e00\u7dd2\u306b\u5922\u4e2d\u306b\u306a\u308c\u308b\u30a4\u30c1\u30aa\u30b7\u306e\u79d1\u5b66\u5b9f\u9a13\u3092\u591a\u6570\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u9ad8\u6821\u7269\u7406\u306e\u7406\u89e3\u3092\u6df1\u3081\u308b\u305f\u3081\u306e\u52d5\u753b\u6559\u6750\u3082\u7528\u610f\u3057\u307e\u3057\u305f\u3002<\/li>\r\n \t<li><a href=\"https:\/\/phys-edu.net\/wp\/?page_id=798\">\u7406\u79d1\u306e\u6559\u6750<\/a>\u2026 \u7406\u79d1\u6559\u5e2b\u3092\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\uff01\u6388\u696d\u306e\u8cea\u3092\u9ad8\u3081\u3001\u6e96\u5099\u3092\u52b9\u7387\u5316\u3059\u308b\u305f\u3081\u306e\u9078\u308a\u3059\u3050\u308a\u306e\u6559\u6750\u3092\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\r\n \t<li><a href=\"https:\/\/www.youtube.com\/c\/kkuwako\">Youtube<\/a>\u2026\u79d1\u5b66\u5b9f\u9a13\u7b49\u306e\u52d5\u753b\u3092\u914d\u4fe1\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\r\n \t<li><a href=\"https:\/\/music.youtube.com\/playlist?list=PLoK4ZvKN9S2NgpYIochcQs0aL-vrRB_Qw\">\u79d1\u5b66\u30e9\u30b8\u30aa<\/a>\u00a0\u2026\u79d1\u5b66\u30c8\u30d4\u30c3\u30af\u3092\u307b\u307c\u6bce\u65e5\u914d\u4fe1\u4e2d\uff01AI\u6280\u8853\u3092\u99c6\u4f7f\u3057\u3066\u4f5c\u6210\u3057\u305f\u300c\u8033\u3067\u697d\u3057\u3080\u79d1\u5b66\u300d\u3092\u304a\u5c4a\u3051\u3057\u307e\u3059\u3002<\/li>\r\n \t<li><a href=\"http:\/\/phys-edu.net\/wp\/?page_id=20940\">\u8b1b\u6f14<\/a>\u00a0\u2026\u5168\u56fd\u5404\u5730\u3067\u5b9f\u9a13\u8b1b\u7fd2\u4f1a\u30fb\u30b5\u30a4\u30a8\u30f3\u30b9\u30b7\u30e7\u30fc\u7b49\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002<\/li>\r\n \t<li><a href=\"http:\/\/phys-edu.net\/wp\/?page_id=37\">About<\/a>\u00a0\u2026\u300c\u79d1\u5b66\u306e\u30cd\u30bf\u5e33\u300d\u306e\u30b3\u30f3\u30bb\u30d7\u30c8\u3084\u3001\u904b\u55b6\u8005\u3067\u3042\u308b\u6851\u5b50\u7814\u306e\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u30fb\u60f3\u3044\u3092\u307e\u3068\u3081\u3066\u3044\u307e\u3059\u3002<\/li>\r\n \t<li><a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">\u304a\u554f\u3044\u5408\u308f\u305b<\/a>\u00a0\u2026\u5b9f\u9a13\u6559\u5ba4\u306e\u3054\u4f9d\u983c\u3001\u57f7\u7b46\u30fb\u8b1b\u6f14\u306e\u76f8\u8ac7\u3001\u79d1\u5b66\u76e3\u4fee\u7b49\u306f\u3053\u3061\u3089\u306e\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u304a\u5bc4\u305b\u304f\u3060\u3055\u3044\u3002<\/li>\r\n<\/ul>\r\n<ul class=\"wp-block-latest-posts__list is-grid columns-3 has-dates wp-block-latest-posts\"><li><div class=\"wp-block-latest-posts__featured-image\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=62891&#038;lang=ko\" aria-label=\"\uba48\ucd98 \ub4ef\ud558\uc9c0\ub9cc \ub2e4\uac00\uc624\uace0 \uc788\ub2e4? &#8216;\ucf5c\ub9ac\uc804 \ucf54\uc2a4&#8217; \ud604\uc0c1\uc758 \uacf5\ud3ec\"><img width=\"150\" height=\"150\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/08\/74ff8b011a242f6fb7ea0802cb36c952-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/a><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/phys-edu.net\/wp\/?p=62891&#038;lang=ko\">\uba48\ucd98 \ub4ef\ud558\uc9c0\ub9cc \ub2e4\uac00\uc624\uace0 \uc788\ub2e4? &#8216;\ucf5c\ub9ac\uc804 \ucf54\uc2a4&#8217; \ud604\uc0c1\uc758 \uacf5\ud3ec<\/a><time datetime=\"2026-04-30T04:31:27+09:00\" class=\"wp-block-latest-posts__post-date\">2026\u5e744\u670830\u65e5<\/time><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=62889&#038;lang=es\" aria-label=\"\u00bfInm\u00f3vil o en rumbo de colisi\u00f3n? El peligro invisible de la velocidad relativa\"><img width=\"150\" height=\"150\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/08\/74ff8b011a242f6fb7ea0802cb36c952-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/a><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/phys-edu.net\/wp\/?p=62889&#038;lang=es\">\u00bfInm\u00f3vil o en rumbo de colisi\u00f3n? El peligro invisible de la velocidad relativa<\/a><time datetime=\"2026-04-30T04:30:54+09:00\" class=\"wp-block-latest-posts__post-date\">2026\u5e744\u670830\u65e5<\/time><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=62887&#038;lang=hi\" aria-label=\"\u0938\u094d\u0925\u093f\u0930 \u092a\u0930 \u091c\u093e\u0928\u0932\u0947\u0935\u093e: \u0915\u094b\u0932\u093f\u091c\u0928 \u0915\u094b\u0930\u094d\u0938 \u0915\u093e \u0916\u0924\u0930\u0928\u093e\u0915 \u0938\u091a\"><img width=\"150\" height=\"150\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/08\/74ff8b011a242f6fb7ea0802cb36c952-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/a><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/phys-edu.net\/wp\/?p=62887&#038;lang=hi\">\u0938\u094d\u0925\u093f\u0930 \u092a\u0930 \u091c\u093e\u0928\u0932\u0947\u0935\u093e: \u0915\u094b\u0932\u093f\u091c\u0928 \u0915\u094b\u0930\u094d\u0938 \u0915\u093e \u0916\u0924\u0930\u0928\u093e\u0915 \u0938\u091a<\/a><time datetime=\"2026-04-30T04:30:07+09:00\" class=\"wp-block-latest-posts__post-date\">2026\u5e744\u670830\u65e5<\/time><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=62885&#038;lang=zh\" aria-label=\"\u770b\u4f3c\u975c\u6b62\u537b\u5728\u903c\u8fd1\uff1f\u4ee4\u4eba\u6bdb\u9aa8\u609a\u7136\u7684\u300c\u78b0\u649e\u8def\u7dda\u300d\u73fe\u8c61\"><img width=\"150\" height=\"150\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/08\/74ff8b011a242f6fb7ea0802cb36c952-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/a><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/phys-edu.net\/wp\/?p=62885&#038;lang=zh\">\u770b\u4f3c\u975c\u6b62\u537b\u5728\u903c\u8fd1\uff1f\u4ee4\u4eba\u6bdb\u9aa8\u609a\u7136\u7684\u300c\u78b0\u649e\u8def\u7dda\u300d\u73fe\u8c61<\/a><time datetime=\"2026-04-30T04:28:59+09:00\" class=\"wp-block-latest-posts__post-date\">2026\u5e744\u670830\u65e5<\/time><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=62882&#038;lang=fi\" aria-label=\"Se n\u00e4ytt\u00e4\u00e4 seisovan, mutta l\u00e4hestyy \u2013 T\u00f6rm\u00e4yskurssin hyyt\u00e4v\u00e4 vaara\"><img width=\"150\" height=\"150\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/08\/74ff8b011a242f6fb7ea0802cb36c952-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/a><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/phys-edu.net\/wp\/?p=62882&#038;lang=fi\">Se n\u00e4ytt\u00e4\u00e4 seisovan, mutta l\u00e4hestyy \u2013 T\u00f6rm\u00e4yskurssin hyyt\u00e4v\u00e4 vaara<\/a><time datetime=\"2026-04-30T04:25:30+09:00\" class=\"wp-block-latest-posts__post-date\">2026\u5e744\u670830\u65e5<\/time><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=62880&#038;lang=en\" aria-label=\"Frozen in Sight, Racing to Impact: The Terror of the Collision Course\"><img width=\"150\" height=\"150\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/08\/74ff8b011a242f6fb7ea0802cb36c952-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/a><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/phys-edu.net\/wp\/?p=62880&#038;lang=en\">Frozen in Sight, Racing to Impact: The Terror of the Collision Course<\/a><time datetime=\"2026-04-30T04:24:38+09:00\" class=\"wp-block-latest-posts__post-date\">2026\u5e744\u670830\u65e5<\/time><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=39867\" aria-label=\"\u82b1\u3073\u3089\u306f\u672c\u5f53\u306b6\u679a\uff1f\u8eab\u8fd1\u306a\u30c1\u30e5\u30fc\u30ea\u30c3\u30d7\u3067\u63a2\u308b\u690d\u7269\u306e\u30eb\u30fc\u30eb\uff08\u690d\u7269\u56f3\u9451\uff09\"><img width=\"150\" height=\"150\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/04\/dad12b44e48bbe3ab6fd4da3be301101-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/a><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/phys-edu.net\/wp\/?p=39867\">\u82b1\u3073\u3089\u306f\u672c\u5f53\u306b6\u679a\uff1f\u8eab\u8fd1\u306a\u30c1\u30e5\u30fc\u30ea\u30c3\u30d7\u3067\u63a2\u308b\u690d\u7269\u306e\u30eb\u30fc\u30eb\uff08\u690d\u7269\u56f3\u9451\uff09<\/a><time datetime=\"2026-04-30T04:12:48+09:00\" class=\"wp-block-latest-posts__post-date\">2026\u5e744\u670830\u65e5<\/time><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=34400\" aria-label=\"\uff0b\u3068\u2212\u3067\u306a\u305c\u9006\uff1f\u30db\u30fc\u30eb\u52b9\u679c\u306e\u30e2\u30e4\u30e2\u30e4\u3092\u4e00\u6c17\u306b\u89e3\u6c7a\uff01\uff08\u9ad8\u6821\u7269\u7406\u5fa9\u7fd2\u5e33\uff09\"><img width=\"150\" height=\"150\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/01\/d0f315698bba7db67a7a11d57ad88e85-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/a><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/phys-edu.net\/wp\/?p=34400\">\uff0b\u3068\u2212\u3067\u306a\u305c\u9006\uff1f\u30db\u30fc\u30eb\u52b9\u679c\u306e\u30e2\u30e4\u30e2\u30e4\u3092\u4e00\u6c17\u306b\u89e3\u6c7a\uff01\uff08\u9ad8\u6821\u7269\u7406\u5fa9\u7fd2\u5e33\uff09<\/a><time datetime=\"2026-04-30T04:00:25+09:00\" class=\"wp-block-latest-posts__post-date\">2026\u5e744\u670830\u65e5<\/time><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=62870&#038;lang=fi\" aria-label=\"Paljasta n\u00e4kym\u00e4t\u00f6n voima! Tasapainon 3 ehtoa kokeellisesti \u2013 keski\u00f6ss\u00e4 suora vaikutusviiva.\"><img width=\"150\" height=\"150\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/10\/0c363943316a3a32b1e6d1e43ff96e38-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/a><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/phys-edu.net\/wp\/?p=62870&#038;lang=fi\">Paljasta n\u00e4kym\u00e4t\u00f6n voima! Tasapainon 3 ehtoa kokeellisesti \u2013 keski\u00f6ss\u00e4 suora vaikutusviiva.<\/a><time datetime=\"2026-04-29T05:20:36+09:00\" class=\"wp-block-latest-posts__post-date\">2026\u5e744\u670829\u65e5<\/time><\/li>\n<\/ul>&nbsp;","protected":false},"excerpt":{"rendered":"<p>Olen Ken Kuwako, tiedekouluttaja. Joka p\u00e4iv\u00e4 on koe. Oletko koskaan talvella tuntenut sen tutun, ik\u00e4v\u00e4n &#038;#8220 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":49975,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","sns_share_botton_hide":"","vkExUnit_sns_title":"","vkexunit_cta_each_option":"","_lightning_design_setting":{"layout":"default"},"footnotes":""},"categories":[1630],"tags":[],"class_list":["post-55161","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category--fi"],"jetpack_featured_media_url":"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-07-13-5.23.29.jpg","jetpack-related-posts":[{"id":54734,"url":"https:\/\/phys-edu.net\/wp\/?p=54734&lang=fi","url_meta":{"origin":55161,"position":0},"title":"Hanka vain nen\u00e4liinalla! Opi plussan ja miinuksen staattisen s\u00e4hk\u00f6n tiede \u201cliikkuvalla pillill\u00e4\u201d!","author":"\u6851\u5b50 \u7814","date":"2025\u5e7410\u670821\u65e5","format":false,"excerpt":"Olen Kuwako Ken, tiedevalmentaja. Joka p\u00e4iv\u00e4 on ko\u2026","rel":"","context":"Science","block_context":{"text":"Science","link":"https:\/\/phys-edu.net\/wp\/?cat=1630&lang=fi"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/02\/369be7bac69306e6052bf78e0c270d6a.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/02\/369be7bac69306e6052bf78e0c270d6a.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/02\/369be7bac69306e6052bf78e0c270d6a.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/02\/369be7bac69306e6052bf78e0c270d6a.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":55046,"url":"https:\/\/phys-edu.net\/wp\/?p=55046&lang=fi","url_meta":{"origin":55161,"position":1},"title":"Tanssivat t\u00f6lkit!? 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