{"id":52847,"date":"2025-09-21T17:34:55","date_gmt":"2025-09-21T08:34:55","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=52847"},"modified":"2025-09-21T17:34:55","modified_gmt":"2025-09-21T08:34:55","slug":"miksi-banaani-nayttaa-keltaiselta-paljasta-valon-ja-hajavaloheijastuksen-salaisuudet-kotona","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=52847&lang=fi","title":{"rendered":"Miksi banaani n\u00e4ytt\u00e4\u00e4 keltaiselta? Paljasta valon ja hajavaloheijastuksen salaisuudet kotona"},"content":{"rendered":"<p style=\"text-align: center;\"><span style=\"color: #339966;\"><strong>Hei, olen tiedekouluttaja Ken Kuwako. Joka p\u00e4iv\u00e4 on uusi koe!<\/strong><\/span><\/p>\n<p style=\"text-align: left;\">Kun katsot peiliin, n\u00e4et kasvosi selv\u00e4sti, mutta kun luot silm\u00e4si p\u00f6yt\u00e4\u00e4n tai sein\u00e4\u00e4n edess\u00e4si, mit\u00e4\u00e4n ei heijastu takaisin. Oletko koskaan miettinyt, miksi? &#x1f914; Itse asiassa salaisuus siihen, miksi voimme n\u00e4hd\u00e4 maailman, ei piile peilin kiilt\u00e4v\u00e4ss\u00e4 pinnassa, vaan ilmi\u00f6ss\u00e4 nimelt\u00e4 <b>&#8220;hajavalo&#8221; (ranhansha)<\/b>. T\u00e4m\u00e4 ilmi\u00f6 j\u00e4\u00e4 usein varjoon fysiikan tunneilla opiskellun &#8220;heijastuslain&#8221; alle, vaikka se on todellinen t\u00e4hti, joka tekee maailmastamme v\u00e4rikk\u00e4\u00e4n ja kolmiulotteisen. L\u00e4hdet\u00e4\u00e4n selvitt\u00e4m\u00e4\u00e4n valon taian salaisuutta helpoilla, kotona teht\u00e4vill\u00e4 kokeilla!<\/p>\n<h3>Ensin, pieni v\u00e4rikysymys!<\/h3>\n<p>Mik\u00e4 tahansa kirkkaanv\u00e4rinen esine n\u00e4ytt\u00e4\u00e4 pime\u00e4ss\u00e4 vain mustalta varjolta. Jotta voimme &#8220;n\u00e4hd\u00e4&#8221; jotain, tarvitsemme aina valoa. T\u00e4ss\u00e4 kysymys sinulle.<\/p>\n<p><strong>K: Olet pime\u00e4ss\u00e4 huoneessa ja valaiset banaanin taskulampulla. Mit\u00e4 v\u00e4ri\u00e4 on valo, joka heijastuu banaanista l\u00e4hell\u00e4 olevalle valkoiselle paperille?<\/strong><\/p>\n<p>V: T\u00e4ss\u00e4 video, jossa teemme kokeen k\u00e4yt\u00e4nn\u00f6ss\u00e4!<\/p>\n<p><iframe loading=\"lazy\" title=\"\u6697\u95c7\u3067\u30d0\u30ca\u30ca\u306b\u5149\u3092\u3042\u3066\u3066\u307f\u308b\u3068\u2026\uff01\u53cd\u5c04\u3068\u4e71\u53cd\u5c04\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/ytg0OAK1r0k?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>Oikea vastaus on <b>&#8220;keltainen&#8221;<\/b>.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\u00a0 wp-image-52835 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-09-21-17.23.04.jpg\" alt=\"\" width=\"547\" height=\"267\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-09-21-17.23.04.jpg 820w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-09-21-17.23.04-300x146.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-09-21-17.23.04-768x375.jpg 768w\" sizes=\"auto, (max-width: 547px) 100vw, 547px\" \/><\/p>\n<p>Kokeile ihmeess\u00e4 samaa kotona banaanilla, omenalla tai paprikalla! (Olen vain banaanifani, mutta mik\u00e4 tahansa k\u00e4y!) T\u00e4m\u00e4n ilmi\u00f6n taustalla on eritt\u00e4in t\u00e4rke\u00e4 periaate, joka liittyy n\u00e4kemisen perusteisiin: valon &#8220;hajavalo&#8221;. T\u00e4n\u00e4\u00e4n syvennymme t\u00e4h\u00e4n mystiseen ilmi\u00f6\u00f6n.<\/p>\n<h3>Peilimaailma vs. meid\u00e4n maailmamme \u2013 Miten valon kulku eroaa?<\/h3>\n<p style=\"text-align: left;\">Kerrataan ensin tuttu &#8220;heijastuslaki&#8221;. Kun valo osuu peilin kaltaiseen sile\u00e4\u00e4n pintaan, se heijastuu vain yhteen, m\u00e4\u00e4r\u00e4ttyyn suuntaan samassa kulmassa kuin se tuli. T\u00e4t\u00e4 kutsutaan <b>&#8220;s\u00e4\u00e4nn\u00f6lliseksi heijastukseksi&#8221; (seihansha)<\/b>. Se on se kuuluisa laki, jonka opimme fysiikan tunneilla.<\/p>\n<p style=\"text-align: center;\"><b>Tulokulma = heijastuskulma<\/b><\/p>\n<p style=\"text-align: left;\">T\u00e4t\u00e4 lakia noudattaen valo etenee kauniisti samaan suuntaan kuin sotilaat paraatissa.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-52821 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-09-21-5.59.07.jpg\" alt=\"\" width=\"427\" height=\"575\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-09-21-5.59.07.jpg 890w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-09-21-5.59.07-223x300.jpg 223w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-09-21-5.59.07-761x1024.jpg 761w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-09-21-5.59.07-768x1034.jpg 768w\" sizes=\"auto, (max-width: 427px) 100vw, 427px\" \/><\/p>\n<p style=\"text-align: left;\">Mutta kun valo osuu tavalliseen, ei-peilim\u00e4iseen esineeseen \u2013 kuten k\u00e4teesi tai p\u00f6yt\u00e4\u00e4n, jolla luet t\u00e4t\u00e4 \u2013 valo hajoaa kaikkiin suuntiin. T\u00e4t\u00e4 kutsutaan <b>&#8220;hajavaloksi&#8221;<\/b>. Mutta t\u00e4ss\u00e4 onkin tieteen j\u00e4nnitt\u00e4vin puoli! <b>Itse asiassa, jos zoomaisimme mikroskooppiseen maailmaan, huomaisimme, ett\u00e4 jokainen yksitt\u00e4inen valons\u00e4de noudattaa edelleen tarkasti lakia &#8220;tulokulma = heijastuskulma&#8221;<\/b>. Koska esineen pinta on mikroskooppisen ep\u00e4tasainen, jokainen s\u00e4de heijastuu eri kulmasta, mik\u00e4 saa valon n\u00e4ytt\u00e4m\u00e4\u00e4n silt\u00e4, kuin se levi\u00e4isi kaikkiin suuntiin.<\/p>\n<h3>Tiedekokki 1: N\u00e4e &#8220;n\u00e4keminen&#8221; laserin avulla!<\/h3>\n<p>L\u00e4hdet\u00e4\u00e4n kokeilemaan, kuinka t\u00e4rke\u00e4 hajavalo on &#8220;n\u00e4kemiselle&#8221;.<\/p>\n<p><b>Tarvikkeet:<\/b><\/p>\n<ul>\n<li>Laserosoitin<\/li>\n<li>Alumiinifolio<\/li>\n<li>Pehmolelu tai muu mieluinen esine<\/li>\n<li>Valkoinen paperi<\/li>\n<\/ul>\n<p><b>Ohjeet:<\/b><\/p>\n<ol>\n<li>Laita valkoinen paperi alustaksi ja aseta sen p\u00e4\u00e4lle varovasti suoristettu, mutta ensin rypistetty alumiinifolio. T\u00e4m\u00e4 rypistetty folio toimii mikroskooppisten ep\u00e4tasaisuuksien mallina.<\/li>\n<li>H\u00e4m\u00e4rr\u00e4 huone ja osoita laservaloa folioa kohti.<\/li>\n<\/ol>\n<p>Mit\u00e4 tapahtuu? Jos pinta olisi sile\u00e4, valo heijastuisi vain yhteen pisteeseen, mutta kun osoitat rypistetty\u00e4 foliota, laserin valo &#8220;levitt\u00e4ytyy&#8221; laajalle alueelle ja pinta n\u00e4ytt\u00e4\u00e4 hehkuvan.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-52822\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-09-21-5.58.49.jpg\" alt=\"\" width=\"483\" height=\"334\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-09-21-5.58.49.jpg 822w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-09-21-5.58.49-300x207.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-09-21-5.58.49-768x531.jpg 768w\" sizes=\"auto, (max-width: 483px) 100vw, 483px\" \/><\/p>\n<p>T\u00e4m\u00e4 on hajavalon voimaa. Koska valo hajoaa kaikkiin suuntiin, saavutamme sen, ett\u00e4 n\u00e4emme valoa esineest\u00e4 mist\u00e4 tahansa kulmasta, jolloin voimme tunnistaa sen muodon. Jos kaikki maailman esineet heijastaisivat valoa kuin peilit&#8230; maailma olisi todella outo, sill\u00e4 n\u00e4kisimme esineet vain tietyist\u00e4 kulmista. Se, ett\u00e4 voimme n\u00e4hd\u00e4 esineit\u00e4 aivan tavallisesti, on <b>hajavalon ansiota<\/b>.<\/p>\n<hr \/>\n<h3>Tiedekokki 2: Selvit\u00e4 v\u00e4rien salaisuus!<\/h3>\n<p style=\"text-align: left;\">Selvitetty\u00e4mme, kuinka hajavalo auttaa meit\u00e4 tunnistamaan &#8220;muodon&#8221;, siirryt\u00e4\u00e4n alussa esitetyn arvoituksen pariin: miten &#8220;v\u00e4ri&#8221; syntyy? Seuraava koe paljastaa v\u00e4rien salaisuuden.<\/p>\n<p><b>Ohjeet:<\/b><\/p>\n<ol>\n<li>H\u00e4m\u00e4rr\u00e4 huone uudelleen.<\/li>\n<li>Ota esiin taskulamppu tai muu valkoinen valonl\u00e4hde ja valaise sill\u00e4 v\u00e4rik\u00e4st\u00e4 pehmolelua.<\/li>\n<li>Tarkkaile, mink\u00e4 v\u00e4rinen on valo, joka heijastuu esineest\u00e4.<\/li>\n<\/ol>\n<p>Esimerkiksi, jos valaiset banaanin pehmolelua. Pime\u00e4ss\u00e4 sit\u00e4 ei tietenk\u00e4\u00e4n n\u00e4y, mutta kun valaiset sen, heijastunut valo on&#8230; totta kai, keltainen!<\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2014\/02\/e54cc2c6e9cdcb912e3dccb19d1723df.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2014\/02\/e54cc2c6e9cdcb912e3dccb19d1723df-223x300.jpg\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2014-02-08 15.31.19\" width=\"311\" height=\"418\" \/><\/a><\/p>\n<p>Miksi n\u00e4in k\u00e4y? Se johtuu siit\u00e4, ett\u00e4 se, mit\u00e4 kutsumme &#8220;valkoiseksi valoksi&#8221; (auringonvalo, taskulamppu), on kuin &#8220;valon maalisetti&#8221;. Se on kaikkien sateenkaaren v\u00e4rien (punainen, oranssi, keltainen, vihre\u00e4, sininen, indigo, violetti) sekoitus. Banaanin kuori <b>absorboi eli imee kaikki muut v\u00e4rit valkoisesta valosta paitsi keltaisen, ja se &#8220;hajottaa&#8221; tai heijastaa keltaisen valon takaisin silmiimme<\/b>. Siksi n\u00e4emme sen keltaisena.<\/p>\n<p>Ent\u00e4 kun valaiset aurinko-pehmolelun punaista osaa?<\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2014\/02\/1d768ffa9fdda71aec5be771b633dd5e.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2014\/02\/1d768ffa9fdda71aec5be771b633dd5e-227x300.jpg\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2014-02-08 15.31.10\" width=\"341\" height=\"451\" \/><\/a><\/p>\n<p>Heijastunut valo on tietysti punaista. Se johtuu siit\u00e4, ett\u00e4 punainen osa absorboi kaikki muut valon v\u00e4rit paitsi punaisen, ja heijastaa vain sen kohti silmi\u00e4mme. Vaikka se tuntuu itsest\u00e4\u00e4nselv\u00e4lt\u00e4, kyky\u00e4mme havaita esineiden &#8220;muoto&#8221; ja &#8220;v\u00e4ri&#8221; ohjaa hajavalon ilmi\u00f6.<\/p>\n<p>Muuten, elokuvateatterin valkokangas on tarkoituksella valkoinen, jotta hajavaloa voidaan hy\u00f6dynt\u00e4\u00e4 mahdollisimman tehokkaasti. Kangas on valmistettu erikoismateriaalista, joka hajoittaa valon tasaisesti kaikkiin suuntiin, jotta kuva n\u00e4kyy selv\u00e4sti kaikilta istumapaikoilta. Arki on t\u00e4ynn\u00e4 hajavaloa.<\/p>\n<p>Jopa kamerat, joita k\u00e4yt\u00e4mme p\u00e4ivitt\u00e4in, ker\u00e4\u00e4v\u00e4t hajavalossa heijastunutta valoa linssien avulla ja muodostavat kuvan.<\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2014\/01\/908971667e532a4972a2eb00197ba5e7.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2014\/01\/908971667e532a4972a2eb00197ba5e7-300x223.jpg\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2014-01-30 21.01.39\" width=\"383\" height=\"285\" \/><\/a><\/p>\n<p>Seuraavan kerran kun n\u00e4et kukan tien varrella tai vihanneksia ruokap\u00f6yd\u00e4ll\u00e4, kuvittele mieless\u00e4si se valon &#8220;suuri tanssi&#8221;, joka tapahtuu sen pinnalla. Eik\u00f6 olekin j\u00e4nnitt\u00e4v\u00e4\u00e4, ett\u00e4 arki on t\u00e4ynn\u00e4 niin mielenkiintoista tiedett\u00e4? Kokeile valon taikaa kotona! &#x2728;<\/p>\n<h3>Ota yhteytt\u00e4 ja pyyd\u00e4 apua<\/h3>\n<p>Tee tieteest\u00e4 ja sen ihmeist\u00e4 l\u00e4heisemp\u00e4\u00e4! T\u00e4\u00e4lt\u00e4 l\u00f6yd\u00e4t hauskoja, kotona teht\u00e4vi\u00e4 tiedekokeita ja vinkkej\u00e4 niiden tekemiseen. Selaa ja etsi lis\u00e4\u00e4!<\/p>\n<p>\u30fbLis\u00e4tietoa kouluttaja Ken Kuwakosta <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">l\u00f6yd\u00e4t t\u00e4\u00e4lt\u00e4<\/a>.<\/p>\n<p>\u30fbJos haluat tilata palveluita (kirjoittaminen, luennot, tiedekerhot, TV-konsultointi, esiintymiset), ota <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">yhteytt\u00e4 t\u00e4st\u00e4<\/a>.<\/p>\n<p><span class=\"s2\">\u30fbPysy ajan tasalla artikkelip\u00e4ivityksist\u00e4 <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><a href=\"https:\/\/www.youtube.com\/user\/kkuwako?sub_confirmation=1\">Tiedevideo-kanavalla<\/a> on paljon hauskoja kokeita!<\/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>Hei, olen tiedekouluttaja Ken Kuwako. Joka p\u00e4iv\u00e4 on uusi koe! Kun katsot peiliin, n\u00e4et kasvosi selv\u00e4sti, mutta [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":52836,"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-52847","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\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-09-21-17.24.26.jpg","jetpack-related-posts":[{"id":63358,"url":"https:\/\/phys-edu.net\/wp\/?p=63358&lang=fi","url_meta":{"origin":52847,"position":0},"title":"Miksi valo taipuu? Aaltojen salaisuus, jonka nero l\u00f6ysi 350 vuotta sitten (Huygensin periaate)","author":"\u6851\u5b50 \u7814","date":"2026\u5e745\u670813\u65e5","format":false,"excerpt":"T\u00e4\u00e4ll\u00e4 Science Trainer 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\/2020\/04\/%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%88-2026-05-13-4.07.26.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/%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%88-2026-05-13-4.07.26.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/%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%88-2026-05-13-4.07.26.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/%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%88-2026-05-13-4.07.26.jpeg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/%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%88-2026-05-13-4.07.26.jpeg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":59938,"url":"https:\/\/phys-edu.net\/wp\/?p=59938&lang=fi","url_meta":{"origin":52847,"position":1},"title":"Sateenvarjopussi taikalangaksi? Valokuidun salaisuus ja kokonaisheijastuksen koe hetkess\u00e4 ymm\u00e4rrettyn\u00e4","author":"\u6851\u5b50 \u7814","date":"2026\u5e742\u67083\u65e5","format":false,"excerpt":"Hei, olen tiedevalmentaja Ken Kuwako! Joka p\u00e4iv\u00e4 o\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\/2015\/11\/b98ba2070acd2688fa90d38c39057bb1.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":54411,"url":"https:\/\/phys-edu.net\/wp\/?p=54411&lang=fi","url_meta":{"origin":52847,"position":2},"title":"Peili palauttaa kakun!? Korttipeilikoe, joka koukuttaa yl\u00e4koululaiset","author":"\u6851\u5b50 \u7814","date":"2025\u5e7410\u670814\u65e5","format":false,"excerpt":"Tervehdys! Olen Kuwako Ken, Tiedevalmentaja. Joka \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\/2022\/04\/5b1bba428d24477213cd61c466884ae9.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/04\/5b1bba428d24477213cd61c466884ae9.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/04\/5b1bba428d24477213cd61c466884ae9.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/04\/5b1bba428d24477213cd61c466884ae9.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/04\/5b1bba428d24477213cd61c466884ae9.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/04\/5b1bba428d24477213cd61c466884ae9.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":62608,"url":"https:\/\/phys-edu.net\/wp\/?p=62608&lang=fi","url_meta":{"origin":52847,"position":3},"title":"Yksi LED, seitsem\u00e4n v\u00e4ri\u00e4? Koe valon v\u00e4rioppi k\u00e4mmenell\u00e4si!","author":"\u6851\u5b50 \u7814","date":"2026\u5e744\u670821\u65e5","format":false,"excerpt":"Tervehdys! Olen tiedevalmentaja Ken Kuwako. Minull\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\/01\/74e22599517841755365c47bd0643831.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":63387,"url":"https:\/\/phys-edu.net\/wp\/?p=63387&lang=fi","url_meta":{"origin":52847,"position":4},"title":"L\u00f6ytyik\u00f6 akvaariosta \u201cp\u00e4\u00e4t\u00f6n olento\u201d!?     Sen salaisuus ja veden pinnalla levi\u00e4v\u00e4n fysiikan h\u00e4mm\u00e4stytt\u00e4v\u00e4t ilmi\u00f6t","author":"\u6851\u5b50 \u7814","date":"2026\u5e745\u670814\u65e5","format":false,"excerpt":"T\u00e4\u00e4ll\u00e4 tiedevalmentaja Ken Kuwako. 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\/2020\/04\/4f085922adaad96a51b3f6d0292677eb.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/4f085922adaad96a51b3f6d0292677eb.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/4f085922adaad96a51b3f6d0292677eb.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/4f085922adaad96a51b3f6d0292677eb.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/4f085922adaad96a51b3f6d0292677eb.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":57961,"url":"https:\/\/phys-edu.net\/wp\/?p=57961&lang=fi","url_meta":{"origin":52847,"position":5},"title":"Tiedett\u00e4 kotona! Valoa kiert\u00e4m\u00e4ll\u00e4 syntyy v\u00e4rej\u00e4? Teippi muuttuu taikamaaliksi \u2014 rakenna polarisaatiokaleidoskooppi","author":"\u6851\u5b50 \u7814","date":"2025\u5e7412\u670828\u65e5","format":false,"excerpt":"Hei, olen tiedevalmentaja Ken Kuwako. Minulle joka\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\/10\/0fb44cfc278b2c42fbd26873066923ef.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=\/wp\/v2\/posts\/52847","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=52847"}],"version-history":[{"count":0,"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=\/wp\/v2\/posts\/52847\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=\/wp\/v2\/media\/52836"}],"wp:attachment":[{"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=52847"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=52847"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=52847"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}