{"id":59938,"date":"2026-02-03T05:05:15","date_gmt":"2026-02-02T20:05:15","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=59938"},"modified":"2026-02-03T05:05:15","modified_gmt":"2026-02-02T20:05:15","slug":"sateenvarjopussi-taikalangaksi-valokuidun-salaisuus-ja-kokonaisheijastuksen-koe-hetkessa-ymmarrettyna","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=59938&lang=fi","title":{"rendered":"Sateenvarjopussi taikalangaksi? Valokuidun salaisuus ja kokonaisheijastuksen koe hetkess\u00e4 ymm\u00e4rrettyn\u00e4"},"content":{"rendered":"<p style=\"text-align: center;\"><span style=\"color: #339966;\"><strong>Hei, olen tiedevalmentaja Ken Kuwako! Joka p\u00e4iv\u00e4 on uusi kokeilu.<\/strong><\/span><\/p>\n<p><a href=\"https:\/\/phys-edu.net\/wp\/?p=22745\">Viime kerralla teimme sateenvarjopussilla kokeen valon sironnasta, joka selitt\u00e4\u00e4 taivaan sinisyyden ja auringonlaskun punerruksen<\/a>. T\u00e4n\u00e4\u00e4n sukelletaan modernin maailman valtavan infrastruktuurin, eli valokuidun, saloihin!<\/p>\n<h3>Mit\u00e4 valokuitu oikein on?<\/h3>\n<p>Mit\u00e4 sinulle tulee mieleen sanasta valokuitu? Kun kysyn t\u00e4t\u00e4 oppilailtani, he yleens\u00e4 vain rypist\u00e4v\u00e4t kulmiaan ja ihmettelev\u00e4t. Eih\u00e4n se mik\u00e4\u00e4n ihme ole, onhan kyseess\u00e4 n\u00e4kym\u00e4tt\u00f6miss\u00e4 oleva asia. Mutta kun n\u00e4yt\u00e4n heille ihan oikean kuidun ja annan valon loistaa sen toisesta p\u00e4\u00e4st\u00e4, oppilaiden ilmeet kirkastuvat v\u00e4litt\u00f6m\u00e4sti.<\/p>\n<p>&#8220;Hei! Tuohan on kuin ne joulukuusen kimaltelevat koristeet!&#8221;<\/p>\n<p><iframe loading=\"lazy\" title=\"\u5168\u53cd\u5c04\u3092\u3084\u3063\u305f\u3089\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u3002\uff5c\u30cf\u30f3\u30ba\u306b\u884c\u3053\u3046\uff01\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/kED64BqtLu4?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>Aivan, valokuidut ovat nyky\u00e4\u00e4n tuttuja monista koristevaloista. Mutta niiden todellinen voima ei ole pelk\u00e4ss\u00e4 kauneudessa. Valokuitu on nyky-yhteiskunnan el\u00e4m\u00e4nlanka, joka mahdollistaa huippunopean internetin ja auttaa l\u00e4\u00e4k\u00e4reit\u00e4 tutkimaan kehon sis\u00e4osia t\u00e4hystyskameroiden avulla. Kaiken takana on ilmi\u00f6 nimelt\u00e4 kokonaisheijastus, joka vangitsee valon kuidun sis\u00e4\u00e4n niin, ettei pisaraakaan karkaa ulos.<\/p>\n<p>T\u00e4m\u00e4 taikuus saattaa kuulostaa monimutkaiselta, mutta kokeillaanpa luoda se itse sateenvarjopussin avulla!<\/p>\n<h3>Tieteen resepti: Sateenvarjopussi-valokuitu!<\/h3>\n<p>Tarvikkeet:<\/p>\n<ul>\n<li>Paksu pilli tai sateenvarjopussi (mahdollisimman l\u00e4pin\u00e4kyv\u00e4)<\/li>\n<li>Saippuaa (esim. nestesaippua, tiskiaine tai kylpysuolat k\u00e4yv\u00e4t)<\/li>\n<li>Vett\u00e4<\/li>\n<li>LED-valo<\/li>\n<li>Laserpointteri (t\u00e4m\u00e4n kokeen t\u00e4hti!)<\/li>\n<\/ul>\n<p>Vaiheet:<\/p>\n<p>T\u00e4yt\u00e4 sateenvarjopussi vedell\u00e4. Lis\u00e4\u00e4 sekaan vain hiuksenhieno m\u00e4\u00e4r\u00e4 saippuavett\u00e4 \u2013 noin 1\u20133 tippaa riitt\u00e4\u00e4! Liika saippua pilaa kokeen. Pieni s\u00e4\u00e4t\u00e4minen on tiedemiehen perustaito.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-35534 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/017c2ae5a63fe15b27e9c60955299ea4.jpg\" alt=\"\" width=\"551\" height=\"301\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/017c2ae5a63fe15b27e9c60955299ea4.jpg 1252w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/017c2ae5a63fe15b27e9c60955299ea4-300x164.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/017c2ae5a63fe15b27e9c60955299ea4-1024x559.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/017c2ae5a63fe15b27e9c60955299ea4-768x420.jpg 768w\" sizes=\"auto, (max-width: 551px) 100vw, 551px\" \/><\/p>\n<p>Miksi saippuaa tarvitaan? Se saa veteen aikaan mikroskooppisen pieni\u00e4 hiukkasia (kolloidihiukkasia). Kun laservalo osuu n\u00e4ihin hiukkasiin, valo siroaa eri suuntiin. T\u00e4t\u00e4 kutsutaan Tyndall-ilmi\u00f6ksi, ja sen ansiosta voimme n\u00e4hd\u00e4 &#8220;valon polun&#8221; selv\u00e4sti.<\/p>\n<p>Piment\u00e4k\u00e4\u00e4 huone mahdollisimman hyvin. Nyt alkaa kokeen j\u00e4nnitt\u00e4vin osuus.<\/p>\n<p>Suuntaa laserpointterin valo varovasti pussin p\u00e4\u00e4st\u00e4 sis\u00e4\u00e4n.<\/p>\n<p>Katso t\u00e4m\u00e4 video:<\/p>\n<p><iframe loading=\"lazy\" title=\"\u5098\u888b\u304c\u9b54\u6cd5\u306e\u7cf8\u306b\uff1f\u4e00\u77ac\u3067\u308f\u304b\u308b\u300c\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u300d\u306e\u79d8\u5bc6\u3068\u5168\u53cd\u5c04\u5b9f\u9a13\u3010\u5149\u306e\u5168\u53cd\u5c04\u3011\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/keiW_4qrjz0?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 osoitat laserilla pillin p\u00e4\u00e4st\u00e4, valo ei karkaa ulos, vaikka ampuisit sen vinosti. Se kimpoilee sein\u00e4mist\u00e4 kerta toisensa j\u00e4lkeen ja kulkee suoraan toiseen p\u00e4\u00e4h\u00e4n. T\u00e4ll\u00f6in koko pilli hehkuu punaisena kuin jalokivi!<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-35533 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/e8c41da2737bda3d7fda01b808a945c5.jpg\" alt=\"\" width=\"556\" height=\"306\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/e8c41da2737bda3d7fda01b808a945c5.jpg 1262w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/e8c41da2737bda3d7fda01b808a945c5-300x165.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/e8c41da2737bda3d7fda01b808a945c5-1024x563.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/e8c41da2737bda3d7fda01b808a945c5-768x422.jpg 768w\" sizes=\"auto, (max-width: 556px) 100vw, 556px\" \/><\/p>\n<p>Huom! Jos saippuavett\u00e4 on liikaa, valo pys\u00e4htyy alkuunsa eik\u00e4 p\u00e4\u00e4se pussin loppuun asti. T\u00e4ydellinen &#8220;laimeus&#8221; on onnistumisen avain.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-23201 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2015\/11\/b98ba2070acd2688fa90d38c39057bb1-268x300.jpg\" alt=\"N\u00e4ytt\u00f6kuva\" width=\"448\" height=\"501\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2015\/11\/b98ba2070acd2688fa90d38c39057bb1-268x300.jpg 268w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2015\/11\/b98ba2070acd2688fa90d38c39057bb1.jpg 386w\" sizes=\"auto, (max-width: 448px) 100vw, 448px\" \/><\/p>\n<p>Sitten se t\u00e4rkein vaihe: Kokeile muuttaa laserin kulmaa hitaasti.<\/p>\n<p>Kun valo osuu sein\u00e4m\u00e4\u00e4n riitt\u00e4v\u00e4n loivassa kulmassa&#8230; tulee hetki, jolloin valo ei en\u00e4\u00e4 karkaa pussista ollenkaan! Se alkaa kulkea siksakkia pussin sis\u00e4ll\u00e4 heijastuen jatkuvasti.<\/p>\n<p>T\u00e4m\u00e4 on valon taikuutta \u2013 kokonaisheijastus!<\/p>\n<p><a href=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2015\/11\/afd0f28f47c8870683af4a4d85abf62f.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-23202 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2015\/11\/afd0f28f47c8870683af4a4d85abf62f-300x165.jpg\" alt=\"N\u00e4ytt\u00f6kuva\" width=\"675\" height=\"371\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2015\/11\/afd0f28f47c8870683af4a4d85abf62f-300x165.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2015\/11\/afd0f28f47c8870683af4a4d85abf62f.jpg 666w\" sizes=\"auto, (max-width: 675px) 100vw, 675px\" \/><\/a><\/p>\n<p>Kun valo yritt\u00e4\u00e4 siirty\u00e4 vedest\u00e4 ilmaan, mutta kulma on liian loiva, veden ja ilman raja toimii kuin peili. Se heijastaa kaiken valon takaisin. Oikea valokuitu on suunniteltu niin tarkasti, ett\u00e4 t\u00e4m\u00e4 heijastus jatkuu loputtomiin, jolloin tieto voi kulkea tuhansien kilometrien p\u00e4\u00e4h\u00e4n.<\/p>\n<p>Jos taas kulma on jyrkk\u00e4 (l\u00e4hes suorassa sein\u00e4m\u00e4\u00e4 vasten), valo menee sein\u00e4m\u00e4n l\u00e4pi ja karkaa ulos. T\u00e4t\u00e4 kutsutaan taittumiseksi.<\/p>\n<p><a href=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2015\/11\/6d6aabc03143363a1467fb425c65f8f2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-23203 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2015\/11\/6d6aabc03143363a1467fb425c65f8f2-300x187.jpg\" alt=\"N\u00e4ytt\u00f6kuva\" width=\"534\" height=\"333\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2015\/11\/6d6aabc03143363a1467fb425c65f8f2-300x187.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2015\/11\/6d6aabc03143363a1467fb425c65f8f2.jpg 487w\" sizes=\"auto, (max-width: 534px) 100vw, 534px\" \/><\/a><\/p>\n<h3>Kokemus nopeuttaa oppimista<\/h3>\n<p>Ennen kuin tuijotat oppikirjan kaavioita tai ratkot kaavoja, haluan sinun kokevan itse, milt\u00e4 tuntuu hallita ja vangita valoa. Oma k\u00e4denj\u00e4lki kokeessa on se kipin\u00e4, joka sytytt\u00e4\u00e4 mielenkiinnon fysiikkaan.<\/p>\n<p>Kokeeseen tarvittava sateenvarjopussi l\u00f6ytyy usein kauppojen eteisest\u00e4 sadep\u00e4ivin\u00e4 \u2013 muista valita mahdollisimman kirkas ja l\u00e4pin\u00e4kyv\u00e4 malli.<\/p>\n<p>Jos haluat syventy\u00e4 aiheeseen lis\u00e4\u00e4, olen selitt\u00e4nyt kokonaisheijastusta ja rajakulmaa tarkemmin videollani. K\u00e4y kurkkaamassa!<\/p>\n<p><iframe loading=\"lazy\" title=\"\u5168\u53cd\u5c04\u3068\u30c0\u30a4\u30e4\u30e2\u30f3\u30c9\u304c\u30d4\u30ab\u30d4\u30ab\u3072\u304b\u308b\u7406\u7531!?\u3010\u9ad8\u6821\u7269\u7406 \u5b9f\u9a13+\u30d7\u30ea\u30f3\u30c8\u3042\u308a\u3011\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/CPBeRGV_6N0?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>Miksi timantti kimaltelee niin kauniisti? Miksi veden alta on vaikea n\u00e4hd\u00e4 taivaalle? Kaikki n\u00e4m\u00e4 kysymykset liittyv\u00e4t kokonaisheijastukseen. Tule mukaan katsomaan maailmaa tieteen silmin!<\/p>\n<h3>Yhteydenotot ja tiedustelut<\/h3>\n<p>Tieteen ihmeit\u00e4 ja iloa l\u00e4hemp\u00e4n\u00e4 sinua! Olen koonnut helppoja ja hauskoja kotikokeita vinkkeineen. Tutki ja kokeile rohkeasti!<\/p>\n<p>\u2022 Tiedemuistiinpanot ovat nyt kirjana. Katso lis\u00e4\u00e4 <a href=\"https:\/\/amzn.to\/42PMCEL\">t\u00e4\u00e4lt\u00e4<\/a> \u2022 Lue lis\u00e4\u00e4 minusta (Ken Kuwako) <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=37\">t\u00e4\u00e4lt\u00e4<\/a> \u2022 Yhteydenotot (luennot, ty\u00f6pajat, TV-ty\u00f6t jne.) <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">t\u00e4\u00e4lt\u00e4<\/a> \u2022 Seuraa p\u00e4ivityksi\u00e4 <a href=\"https:\/\/x.com\/kuwako\">X-palvelussa<\/a>!<\/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\">Tiedekanava<\/a> tarjoaa lis\u00e4\u00e4 koevideoita!<\/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 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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 tiedevalmentaja Ken Kuwako! Joka p\u00e4iv\u00e4 on uusi kokeilu. Viime kerralla teimme sateenvarjopussilla ko [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":23201,"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-59938","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\/2015\/11\/b98ba2070acd2688fa90d38c39057bb1.jpg","jetpack-related-posts":[{"id":52847,"url":"https:\/\/phys-edu.net\/wp\/?p=52847&lang=fi","url_meta":{"origin":59938,"position":0},"title":"Miksi banaani n\u00e4ytt\u00e4\u00e4 keltaiselta? Paljasta valon ja hajavaloheijastuksen salaisuudet kotona","author":"\u6851\u5b50 \u7814","date":"2025\u5e749\u670821\u65e5","format":false,"excerpt":"Hei, olen tiedekouluttaja 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\/2025\/09\/%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%88-2025-09-21-17.24.26.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/09\/%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%88-2025-09-21-17.24.26.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/09\/%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%88-2025-09-21-17.24.26.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/09\/%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%88-2025-09-21-17.24.26.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/09\/%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%88-2025-09-21-17.24.26.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":58015,"url":"https:\/\/phys-edu.net\/wp\/?p=58015&lang=fi","url_meta":{"origin":59938,"position":1},"title":"Mit\u00e4 tapahtuu, kun valo kulkee prisman l\u00e4pi? Valkoinen valo muuttuu seitsem\u00e4n v\u00e4rin palapeliksi \u2013 Newtonin rakastama valon maailma","author":"\u6851\u5b50 \u7814","date":"2025\u5e7412\u670830\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\/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%88-2025-12-30-4.50.48.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%88-2025-12-30-4.50.48.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%88-2025-12-30-4.50.48.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%88-2025-12-30-4.50.48.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":57961,"url":"https:\/\/phys-edu.net\/wp\/?p=57961&lang=fi","url_meta":{"origin":59938,"position":2},"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":[]},{"id":53644,"url":"https:\/\/phys-edu.net\/wp\/?p=53644&lang=fi","url_meta":{"origin":59938,"position":3},"title":"Valon salaisuus paljastuu: Tee oma spektri-naamiosi ja n\u00e4e sateenkaari kaikkialla!","author":"\u6851\u5b50 \u7814","date":"2025\u5e7410\u67082\u65e5","format":false,"excerpt":"Olen Kuwako Ken, tiedekouluttajanne. Joka p\u00e4iv\u00e4 on\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\/10\/%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%88-2025-10-02-5.09.20.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/10\/%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%88-2025-10-02-5.09.20.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/10\/%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%88-2025-10-02-5.09.20.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/10\/%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%88-2025-10-02-5.09.20.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/10\/%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%88-2025-10-02-5.09.20.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/10\/%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%88-2025-10-02-5.09.20.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":55854,"url":"https:\/\/phys-edu.net\/wp\/?p=55854&lang=fi","url_meta":{"origin":59938,"position":4},"title":"Pyydyst\u00e4 valon taittuminen! Nelj\u00e4 nuppineulaa paljastaa valon salaisen reitin (Pystytk\u00f6 paljastamaan valokuvahuijauksen?)","author":"\u6851\u5b50 \u7814","date":"2025\u5e7411\u670813\u65e5","format":false,"excerpt":"Olen Ken Kuwako, tiedeohjaaja. Jokainen p\u00e4iv\u00e4 on k\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\/06\/e6d88b8ba4709477e240017b28f76a34.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/e6d88b8ba4709477e240017b28f76a34.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/e6d88b8ba4709477e240017b28f76a34.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/e6d88b8ba4709477e240017b28f76a34.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":52379,"url":"https:\/\/phys-edu.net\/wp\/?p=52379&lang=fi","url_meta":{"origin":59938,"position":5},"title":"Laatikko laatikon sis\u00e4ll\u00e4! Tee valon taianomainen CMY-vesikuutio! (Valon taittuminen ja v\u00e4ritrion v\u00e4rit)","author":"\u6851\u5b50 \u7814","date":"2025\u5e749\u670816\u65e5","format":false,"excerpt":"Hei, olen tiedekouluttaja Ken Kuwako. Jokainen p\u00e4i\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\/02\/571792d02ea591ad9643207cf5e606fb.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/02\/571792d02ea591ad9643207cf5e606fb.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/02\/571792d02ea591ad9643207cf5e606fb.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/02\/571792d02ea591ad9643207cf5e606fb.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=\/wp\/v2\/posts\/59938","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=59938"}],"version-history":[{"count":0,"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=\/wp\/v2\/posts\/59938\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=\/wp\/v2\/media\/23201"}],"wp:attachment":[{"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=59938"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=59938"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=59938"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}