{"id":55627,"date":"2025-11-09T06:17:40","date_gmt":"2025-11-08T21:17:40","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=55627"},"modified":"2025-11-09T06:17:40","modified_gmt":"2025-11-08T21:17:40","slug":"miksi-magneetti-pysayttaa-sen-paljasta-muutosta-vihaavan-sahkon-salaisuus-kaamikokeen-avulla","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=55627&lang=fi","title":{"rendered":"Miksi magneetti pys\u00e4ytt\u00e4\u00e4 sen? Paljasta \u201cmuutosta vihaavan s\u00e4hk\u00f6n\u201d salaisuus k\u00e4\u00e4mikokeen avulla!"},"content":{"rendered":"<p style=\"text-align: center;\"><span style=\"color: #339966;\"><strong>Olen Ken Kuwako, tiedekouluttajanne. Joka p\u00e4iv\u00e4 on kokeilun arvoinen.<\/strong><\/span><\/p>\n<p>Metalliesine pys\u00e4htyy kuin sein\u00e4\u00e4n, vaikka siihen ei kosketa&#8230; Eik\u00f6 olisikin j\u00e4nnitt\u00e4v\u00e4\u00e4, jos tieteiselokuvista tai taikuudesta tutun ilmi\u00f6n voisi toteuttaa helposti, kotioloissa, aivan arkisilla tarvikkeilla? T\u00e4n\u00e4\u00e4n esittelen kokeen, jonka voit tehd\u00e4 heti kotona ja joka takuulla h\u00e4mm\u00e4stytt\u00e4\u00e4!<\/p>\n<p>T\u00e4m\u00e4n ilmi\u00f6n avain on py\u00f6rrevirta (tai Foucault&#8217;n virta). Vaikka nimi ei ehk\u00e4 ole tuttu, se tukee el\u00e4m\u00e4\u00e4mme monissa l\u00e4heisiss\u00e4 sovelluksissa. Esimerkiksi Shinkansen-luotijunissa, joissakin muissa junissa ja huvipuistojen vuoristoradoissa hy\u00f6dynnet\u00e4\u00e4n py\u00f6rrevirtajarruja. N\u00e4iden jarrujen uskomaton etu on se, ett\u00e4 ne voivat pys\u00e4ytt\u00e4\u00e4 py\u00f6r\u00e4t kuin taikaiskusta ilman fyysist\u00e4 kosketusta osien v\u00e4lill\u00e4. Koska jarru ei perustu kitkaan, se toimii luotettavasti my\u00f6s sateella, eik\u00e4 osien kuluminen ole ongelma.<\/p>\n<p>T\u00e4n\u00e4\u00e4n paljastamme t\u00e4m\u00e4n maagisen py\u00f6rrevirran salaisuuden kokeen avulla!<\/p>\n<h3>Tieteen resepti<\/h3>\n<h4>\u25cf Tarvikkeet<\/h4>\n<ul>\n<li>Kuparilankaa (pinnoitettu lanka, esim. emaloitu, on helpompi k\u00e4sitell\u00e4)<\/li>\n<li>Keskikappale (esim. tyhj\u00e4 t\u00f6lkki tai folion\/kelmun hylsy)<\/li>\n<li>Magneetti<\/li>\n<li>Jos mahdollista, krokotiilipidikkeit\u00e4 (tai teippi\u00e4)<\/li>\n<\/ul>\n<p>Magneetin osalta olisi parasta k\u00e4ytt\u00e4\u00e4 vahvaa magneettia, kuten neodyymimagneettia, mutta voit k\u00e4ytt\u00e4\u00e4 my\u00f6s 100 jenin kaupasta saatavia py\u00f6reit\u00e4 ferriittimagneetteja pinoamalla niit\u00e4 useamman p\u00e4\u00e4llekk\u00e4in. Mit\u00e4 paremmin kupari johtaa s\u00e4hk\u00f6\u00e4, sit\u00e4 selvemmin ilmi\u00f6 n\u00e4kyy.<\/p>\n<h4>\u25cf Ohjeet<\/h4>\n<p><strong>\u2460 Valmista ensin kela.<\/strong> Kierr\u00e4 kuparilankaa tyhj\u00e4n t\u00f6lkin tai muun lieri\u00f6n ymp\u00e4rille. Suosittelemme k\u00e4ytt\u00e4m\u00e4\u00e4n kapeaa t\u00f6lkki\u00e4, esimerkiksi virvoitusjuomat\u00f6lkki\u00e4. Kierr\u00e4 lankaa noin 20 kertaa. (Jos k\u00e4yt\u00e4t emaloitua lankaa, raaputa pinnoite pois langan molemmista p\u00e4ist\u00e4 hiekkapaperilla.)<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-23946 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2016\/01\/addf2aebe79651e48b6a50a018791333.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2016-01-21 18.36.09\" width=\"406\" height=\"348\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2016\/01\/addf2aebe79651e48b6a50a018791333.png 406w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2016\/01\/addf2aebe79651e48b6a50a018791333-300x257.png 300w\" sizes=\"auto, (max-width: 406px) 100vw, 406px\" \/><\/p>\n<p><strong>\u2461 Ripusta kela heilumaan eli tee &#8220;keinu&#8221;.<\/strong> Kiinnit\u00e4 kela johonkin niin, ett\u00e4 se p\u00e4\u00e4see heilumaan kuin heiluri.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-23947 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2016\/01\/b0f130650f2ab62edc9969f42149479a.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2016-01-21 18.36.15\" width=\"489\" height=\"482\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2016\/01\/b0f130650f2ab62edc9969f42149479a.png 489w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2016\/01\/b0f130650f2ab62edc9969f42149479a-300x296.png 300w\" sizes=\"auto, (max-width: 489px) 100vw, 489px\" \/><\/p>\n<p><strong>\u2462 Heiluta keinuun ripustettua kelaa sellaisenaan.<\/strong> Aloita heiluttamalla kelaa normaalisti. Kuten odotettua, se jatkaa heilumistaan jonkin aikaa. Seuraavaksi, yhdist\u00e4 kuparilangan molemmat p\u00e4\u00e4t krokotiilipidikkeill\u00e4 (tai teipill\u00e4) eli sulje piiri ja tarkkaile tilannetta. Koska magneettia ei viel\u00e4 ole paikalla, mit\u00e4\u00e4n muutosta ei pit\u00e4isi tapahtua.<\/p>\n<p><strong>\u2463 Aseta magneetti kelan viereen ja toista vaihe \u2462.<\/strong> Aseta magneetti niin, ett\u00e4 heiluva kela l\u00e4hestyy ja et\u00e4\u00e4ntyy magneetista kelan sivulta p\u00e4in, eik\u00e4 niin, ett\u00e4 magneetti kulkee kelan renkaan l\u00e4pi. Toista sitten vaihe \u2462.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-23948 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2016\/01\/c66b8604e897d92f430598109b42b868.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2016-01-21 18.46.46\" width=\"424\" height=\"302\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2016\/01\/c66b8604e897d92f430598109b42b868.png 424w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2016\/01\/c66b8604e897d92f430598109b42b868-300x214.png 300w\" sizes=\"auto, (max-width: 424px) 100vw, 424px\" \/><\/p>\n<h4>\u25cf Tulos<\/h4>\n<p>Katso <a href=\"https:\/\/youtu.be\/MmqR9Nx0ji4\">t\u00e4m\u00e4 video<\/a>.<\/p>\n<p><iframe loading=\"lazy\" title=\"\u96fb\u6c17\u30d6\u30e9\u30f3\u30b3\u3068\u8a98\u5c0e\u96fb\u6d41\u306b\u3088\u308b\u30d6\u30ec\u30fc\u30ad\u73fe\u8c61 \u3010\u6e26\u96fb\u6d41\u3011\" width=\"1140\" height=\"855\" src=\"https:\/\/www.youtube.com\/embed\/MmqR9Nx0ji4?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>Uskomatonta! Kun magneetti on paikallaan ja kytket kuparilangan p\u00e4\u00e4t yhteen eli suljet piirin, keinu pys\u00e4htyy l\u00e4hes v\u00e4litt\u00f6m\u00e4sti, aivan kuin se liikkuisi mudassa tai siirapissa. Emme kytkeneet virtal\u00e4hdett\u00e4 tai paristoa, joten on todella kummallista, miksi se pys\u00e4htyy!<\/p>\n<h3>Taikuuden salaisuus \u2013 Miksi jarrutus tapahtuu?<\/h3>\n<p>T\u00e4m\u00e4n ilmi\u00f6n taustalla on s\u00e4hk\u00f6magneettinen induktio ja siit\u00e4 seuraava s\u00e4hk\u00f6n luontainen taipumus vastustaa muutosta.<\/p>\n<ol>\n<li>S\u00e4hk\u00f6 syntyy (s\u00e4hk\u00f6magneettinen induktio) Kun kela (kuparilanka) liikkuu magneetin l\u00e4hell\u00e4 (l\u00e4hestyy tai et\u00e4\u00e4ntyy), kelan sis\u00e4ll\u00e4 oleva magneettikent\u00e4n voimakkuus muuttuu. Fysiikan tunneilta tutun Faradayn s\u00e4hk\u00f6magneettisen induktion lain mukaan t\u00e4m\u00e4 &#8220;muutos&#8221; luo kelaan voiman (j\u00e4nnitteen), joka yritt\u00e4\u00e4 saada s\u00e4hk\u00f6n virtaamaan.<\/li>\n<li>Kun piiri suljetaan&#8230; T\u00e4ss\u00e4 kokeessa kuparilangan p\u00e4iden yhdist\u00e4minen (piirin sulkeminen) on ratkaiseva tekij\u00e4. Vaikka s\u00e4hk\u00f6\u00e4 yritt\u00e4v\u00e4 voima syntyisi, s\u00e4hk\u00f6 ei virtaa, jos reitti ei ole yhten\u00e4inen. Mutta kun piirin kytkee kiinni, syntynyt voima saa aikaan induktiovirran virtaamisen kelassa.<\/li>\n<li>Jarrutus alkaa (Lenzin laki) T\u00e4m\u00e4 on kokeen mielenkiintoisin vaihe. T\u00e4ll\u00f6in virtaavalla s\u00e4hk\u00f6ll\u00e4 on hyvin &#8220;j\u00e4\u00e4r\u00e4p\u00e4inen&#8221; luonne (Lenzin laki).\n<ul>\n<li>Kun kela yritt\u00e4\u00e4 l\u00e4hesty\u00e4 magneettia \u2192 Se synnytt\u00e4\u00e4 magneettisen voiman, joka hylkii (&#8220;\u00c4l\u00e4 tule!&#8221;), ja est\u00e4\u00e4 liikkeen.<\/li>\n<li>Kun kela yritt\u00e4\u00e4 et\u00e4\u00e4nty\u00e4 magneetista \u2192 Se synnytt\u00e4\u00e4 magneettisen voiman, joka vet\u00e4\u00e4 puoleensa (&#8220;\u00c4l\u00e4 mene!&#8221;), ja est\u00e4\u00e4 silti liikkeen.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p>Toisin sanoen, riippumatta siit\u00e4 mihin suuntaan kela yritt\u00e4\u00e4 liikkua, syntyy aina voima (jarru), joka &#8220;sanoo stoppia&#8221; liikkeelle. T\u00e4m\u00e4 on periaate kosketuksettoman py\u00f6rrevirtajarrun takana. Taikuudelta n\u00e4ytt\u00e4nyt ilmi\u00f6 olikin pohjimmiltaan s\u00e4hk\u00f6n voima, joka pyrkii kaikin voimin vastustamaan magneettikent\u00e4n muutosta!<\/p>\n<h3>\u3010Laajennus\u3011 Py\u00f6rrevirta py\u00f6riv\u00e4ss\u00e4 hyrr\u00e4ss\u00e4<\/h3>\n<p>Py\u00f6rrevirtajarrutusta voi kokeilla my\u00f6s metallilevyn avulla, kuten esimerkiksi painavassa Maapallo-hyrr\u00e4ss\u00e4. T\u00e4ss\u00e4 tapauksessa virta ei kulje kelassa, vaan metallilevyn sis\u00e4ll\u00e4.<\/p>\n<p><iframe loading=\"lazy\" title=\"\u5730\u7403\u30b4\u30de\u3092\u3059\u3050\u306b\u6b62\u3081\u3066\u3057\u307e\u3046\u65b9\u6cd5\u3010\u6e26\u96fb\u6d41\u30d6\u30ec\u30fc\u30ad\u3011\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/YnyYWBZHG7E?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>Kun magneetti tuodaan l\u00e4helle py\u00f6riv\u00e4\u00e4 hyrr\u00e4\u00e4 (metallilevy\u00e4), levyn sis\u00e4lle syntyy &#8220;py\u00f6rteinen s\u00e4hk\u00f6virta&#8221; = py\u00f6rrevirta. My\u00f6s t\u00e4m\u00e4 py\u00f6rrevirta on &#8220;j\u00e4\u00e4r\u00e4p\u00e4inen&#8221;. Se jarruttaa hyrr\u00e4n py\u00f6rimist\u00e4 pyrkien est\u00e4m\u00e4\u00e4n &#8220;muutosta&#8221; eli hyrr\u00e4n py\u00f6rimist\u00e4. N\u00e4emme, kuinka py\u00f6riv\u00e4n hyrr\u00e4n nopeus alkaa hidastua ja se pys\u00e4htyy, kun magneetti tuodaan l\u00e4helle.<\/p>\n<p>Toisin kuin edellisess\u00e4 kokeessa, jossa virta kulki &#8220;kuparilangan reitti\u00e4&#8221;, t\u00e4ss\u00e4 virta py\u00f6rii koko &#8220;metallilevyn&#8221; sis\u00e4ll\u00e4. Molemmat ilmi\u00f6t ovat t\u00e4rkeit\u00e4 tieteen ja tekniikan periaatteita, jotka tukevat turvallista el\u00e4m\u00e4\u00e4mme. Kokeile t\u00e4t\u00e4 &#8220;taikajarrua&#8221; kotioloissa!<\/p>\n<h3>Tiedustelut ja pyynn\u00f6t<\/h3>\n<p>Tehd\u00e4\u00e4n tieteen ihmeist\u00e4 ja hauskuudesta l\u00e4hestytt\u00e4v\u00e4\u00e4! Olen koonnut helppolukuisia ohjeita hauskoista tiedekokeista ja niiden toteutusvinkeist\u00e4 kotiin. Hae lis\u00e4\u00e4 tietoa! \u30fbTietokirjani Science Notebook (Kagaku no Netachou) on julkaistu. Lis\u00e4tietoja <a href=\"https:\/\/amzn.to\/42PMCEL\">t\u00e4\u00e4lt\u00e4<\/a> \u30fbLis\u00e4tietoja yll\u00e4pit\u00e4j\u00e4 Ken Kuwakosta <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=37\">t\u00e4\u00e4lt\u00e4<\/a> \u30fbErilaiset toimeksiannot (kirjoittaminen, luennot, kokeilupajat, TV-konsultointi\/esiintyminen jne.) <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">t\u00e4\u00e4lt\u00e4<\/a> <span class=\"s2\">\u30fbArtikkelip\u00e4ivitykset l\u00e4hetet\u00e4\u00e4n <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>Koevideoita julkaistaan <a href=\"https:\/\/www.youtube.com\/user\/kkuwako?sub_confirmation=1\">tieteen ideakanavalla<\/a>!<\/p>\n<h3>\uff15\u6708\u306e\u30a4\u30c1\u30aa\u30b7\u5b9f\u9a13\uff01<\/h3>\r\n<p>\u30ad\u30fc\u30f3\u3068\u51b7\u3048\u308b\u30c9\u30e9\u30a4\u30a2\u30a4\u30b9\uff01\u6c17\u6e29\u304c\u4e0a\u304c\u3063\u3066\u304f\u308b\u3053\u306e\u6642\u671f\u30fb\u30c9\u30e9\u30a4\u30a2\u30a4\u30b9\u3092\u4f7f\u3063\u305f\u6607\u83ef\u30fb\u51dd\u7d50\u30fb\u7b49\u901f\u5ea6\u76f4\u7dda\u904b\u52d5\u306e\u5b9f\u9a13\u306f\u3044\u304b\u304c\uff1f<\/p>\r\n<p><img class=\"alignnone wp-image-39516 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe.jpg\" sizes=\"auto, (max-width: 550px) 100vw, 550px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe.jpg 1406w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-300x168.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-1024x572.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-768x429.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-320x180.jpg 320w\" alt=\"\" width=\"453\" height=\"253\" \/><\/p>\r\n<p style=\"text-align: center;\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=39513\">\u6db2\u4f53\u30bc\u30ed\uff01\u30c9\u30e9\u30a4\u30a2\u30a4\u30b9\u304c\u6d88\u3048\u308b\u307e\u3067\u306e\uff13\u6642\u9593\u3092\u79d1\u5b66\u3059\u308b\uff08\u6607\u83ef\u30fb\u51dd\u7d50\u30fb\u7b49\u901f\u5ea6\u76f4\u7dda\u904b\u52d5\uff09<\/a><\/p>\r\n<h3 style=\"text-align: left;\"><span style=\"font-size: medium;\"><b><strong>\u30c6\u30ec\u30d3\u756a\u7d44\u76e3\u4fee\u30fb\u30a4\u30d9\u30f3\u30c8\u7b49\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/span><\/h3>\r\n<ul>\r\n<li>4\u670830\u65e5\uff08\u6728\uff09\u300cTHE\u7a81\u7834\u30d5\u30a1\u30a4\u30eb\u300d\uff08\u65e5\u672c\u30c6\u30ec\u30d3\uff09\u306e<a href=\"https:\/\/phys-edu.net\/wp\/?p=62906\">\u79d1\u5b66\u76e3\u4fee\u3092\u62c5\u5f53\u3057\u307e\u3057\u305f<\/a>\u3002<\/li>\r\n<li>5\u67088\u65e5\uff08\u91d1\uff09<a href=\"https:\/\/phys-edu.net\/wp\/?p=62629\">\u7406\u79d1\u6559\u80b2\u30cb\u30e5\u30fc\u30b9<\/a>\u3092\u62c5\u5f53\u3057\u307e\u3057\u305f\u3002<\/li>\r\n<li>6\u670814\u65e5\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<li>6\u670826\u65e5\uff08\u91d1\uff09\u3000\u5343\u8449\u5927\u5b66\u306e\u516c\u958b\u7814\u7a76\u4f1a\uff08\u4e2d\u5b66\u7406\u79d1\u306b\u3064\u3044\u3066\u6388\u696d\u516c\u958b\u4e88\u5b9a\uff09<\/li>\r\n<li>7\u670818\u65e5\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<\/ul>\r\n<h3><b>\u66f8\u7c4d<strong>\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/h3>\r\n<ul>\r\n<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<br \/><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\" \/><br \/><\/strong><\/li>\r\n<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<br \/><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=\"text-align: center;\">\u5404\u7a2eSNS\uff08\u66f4\u65b0\u60c5\u5831\u3092\u304a\u5c4a\u3051\uff01\uff09<\/span><\/h3>\r\n<p style=\"text-align: center;\"><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>\uff08\u65e5\u672c\u8a9e\uff09<\/p>\r\n<p style=\"text-align: center;\"><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>\uff08\u82f1\u8a9e\uff09<\/p>\r\n<h3 style=\"text-align: center;\"><strong>Explore<\/strong><\/h3>\r\n<ul>\r\n<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<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<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<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<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<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<li><a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">\u304a\u554f\u3044\u5408\u308f\u305b<\/a> \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","protected":false},"excerpt":{"rendered":"<p>Olen Ken Kuwako, tiedekouluttajanne. Joka p\u00e4iv\u00e4 on kokeilun arvoinen. Metalliesine pys\u00e4htyy kuin sein\u00e4\u00e4n, vaik [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":23946,"comment_status":"closed","ping_status":"closed","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-55627","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\/2016\/01\/addf2aebe79651e48b6a50a018791333.png","jetpack-related-posts":[{"id":58160,"url":"https:\/\/phys-edu.net\/wp\/?p=58160&lang=fi","url_meta":{"origin":55627,"position":0},"title":"Kolikko kaatuu koskematta ja alumiinifolio leijuu ilmassa!? Koe py\u00f6rrevirrat kotona! (Faradayn p\u00f6yt\u00e4)","author":"\u6851\u5b50 \u7814","date":"2026\u5e741\u67081\u65e5","format":false,"excerpt":"Olen tiedevalmentaja Ken Kuwako. Joka p\u00e4iv\u00e4 on koe\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\/2019\/12\/9c3334f410d485f41926d617855f4ff2.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/12\/9c3334f410d485f41926d617855f4ff2.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/12\/9c3334f410d485f41926d617855f4ff2.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/12\/9c3334f410d485f41926d617855f4ff2.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":61427,"url":"https:\/\/phys-edu.net\/wp\/?p=61427&lang=fi","url_meta":{"origin":55627,"position":1},"title":"Tehd\u00e4\u00e4n n\u00e4kym\u00e4tt\u00f6m\u00e4st\u00e4 s\u00e4hk\u00f6st\u00e4 n\u00e4kyv\u00e4\u00e4! Kondensaattorin purkautumiskoe k\u00e4sinlaskulla ja uusilla sensoreilla","author":"\u6851\u5b50 \u7814","date":"2026\u5e743\u670812\u65e5","format":false,"excerpt":"Tervehdys! Olen Ken Kuwako, tiedevalmentajasi. Min\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\/2019\/02\/low_IMG_0535.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/02\/low_IMG_0535.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/02\/low_IMG_0535.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/02\/low_IMG_0535.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":62882,"url":"https:\/\/phys-edu.net\/wp\/?p=62882&lang=fi","url_meta":{"origin":55627,"position":2},"title":"Se n\u00e4ytt\u00e4\u00e4 seisovan, mutta l\u00e4hestyy \u2013 T\u00f6rm\u00e4yskurssin hyyt\u00e4v\u00e4 vaara","author":"\u6851\u5b50 \u7814","date":"2026\u5e744\u670830\u65e5","format":false,"excerpt":"T\u00e4\u00e4ll\u00e4 tiedevalmentaja Kuwako Ken. Joka p\u00e4iv\u00e4 on u\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\/2024\/08\/74ff8b011a242f6fb7ea0802cb36c952.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/08\/74ff8b011a242f6fb7ea0802cb36c952.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/08\/74ff8b011a242f6fb7ea0802cb36c952.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/08\/74ff8b011a242f6fb7ea0802cb36c952.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":57353,"url":"https:\/\/phys-edu.net\/wp\/?p=57353&lang=fi","url_meta":{"origin":55627,"position":3},"title":"Keitti\u00f6tiedett\u00e4 ja taikaa! Kun sekoitin muuttuu taikasauvaksi \u2013 yl\u00f6s ja alas vaihtavan linssin salaisuus","author":"\u6851\u5b50 \u7814","date":"2025\u5e7412\u670815\u65e5","format":false,"excerpt":"T\u00e4ss\u00e4 Ken Kuwako, tiedekouluttajanne. Kokeiluja jo\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\/2017\/02\/992ab5ab3389b666f429ded284abb2c3.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":56755,"url":"https:\/\/phys-edu.net\/wp\/?p=56755&lang=fi","url_meta":{"origin":55627,"position":4},"title":"Banaani pysyi pystyss\u00e4 ilman liimaa! Kahden hammasharjan luoma kitkan taika","author":"\u6851\u5b50 \u7814","date":"2025\u5e7412\u67084\u65e5","format":false,"excerpt":"T\u00e4ss\u00e4 tiedevalmentaja Ken Kuwako. Koe joka p\u00e4iv\u00e4! \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\/2025\/12\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2025-12-04-4.42.13.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/12\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2025-12-04-4.42.13.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/12\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2025-12-04-4.42.13.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/12\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2025-12-04-4.42.13.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":60501,"url":"https:\/\/phys-edu.net\/wp\/?p=60501&lang=fi","url_meta":{"origin":55627,"position":5},"title":"Staattisen s\u00e4hk\u00f6n salaisuus! Tee hauska koe styroksilla ja paperinpalasilla (dielektrinen polarisaatio)","author":"\u6851\u5b50 \u7814","date":"2026\u5e742\u670813\u65e5","format":false,"excerpt":"Olen Ken Kuwako, tiedevalmentajasi. 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