{"id":63266,"date":"2026-05-10T04:54:29","date_gmt":"2026-05-09T19:54:29","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=63266"},"modified":"2026-05-10T04:54:29","modified_gmt":"2026-05-09T19:54:29","slug":"yleisurheilupaivan-pyorteesta-valon-taittumiseen-taydellisen-heijastumisen-salaisuus-selitettyna-huygensin-periaate","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=63266&lang=fi","title":{"rendered":"Yleisurheilup\u00e4iv\u00e4n py\u00f6rteest\u00e4 valon taittumiseen! T\u00e4ydellisen heijastumisen salaisuus selitettyn\u00e4 (Huygensin periaate)"},"content":{"rendered":"<p style=\"text-align: center;\"><span style=\"color: #339966;\"><strong>T\u00e4ss\u00e4 tiedeblogia pit\u00e4v\u00e4 Kuwako Ken. Jokainen p\u00e4iv\u00e4 on uusi koe.<\/strong><\/span><\/p>\n<p>&#8220;Opettaja, miksi kokonaisheijastusta ei tapahdu, kun valo kulkee ilmasta veteen?&#8221;<\/p>\n<p>Er\u00e4\u00e4n\u00e4 p\u00e4iv\u00e4n\u00e4 oppilaan vihkon reunaan oli kirjoitettu t\u00e4llainen kysymys. Se n\u00e4ytt\u00e4\u00e4 ensi silm\u00e4yksell\u00e4 yksinkertaiselta, mutta oikeasti kyse on yll\u00e4tt\u00e4v\u00e4n syv\u00e4st\u00e4 ilmi\u00f6st\u00e4. L\u00e4hdet\u00e4\u00e4n yhdess\u00e4 tutkimaan valon kiehtovaa k\u00e4ytt\u00e4ytymist\u00e4 t\u00e4m\u00e4n kysymyksen kautta.<\/p>\n<h3>Ilmasta veteen, vedest\u00e4 ilmaan \u2013 miten valo liikkuu eri tavoin?<\/h3>\n<p>Kun valo saapuu ilmasta veteen, <b>samalla tapahtuu sek\u00e4 heijastumista ett\u00e4 taittumista, ja valo p\u00e4\u00e4see aina veden sis\u00e4\u00e4n riippumatta kulmasta.<\/b><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-35623 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/a7896c5ee3f9a38c57eed1a7b54541de.jpg\" alt=\"\" width=\"562\" height=\"318\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/a7896c5ee3f9a38c57eed1a7b54541de.jpg 980w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/a7896c5ee3f9a38c57eed1a7b54541de-300x170.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/a7896c5ee3f9a38c57eed1a7b54541de-768x434.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/a7896c5ee3f9a38c57eed1a7b54541de-320x180.jpg 320w\" sizes=\"auto, (max-width: 562px) 100vw, 562px\" \/><\/p>\n<p>Tilanne muuttuu kuitenkin t\u00e4ysin, kun valo yritt\u00e4\u00e4 kulkea vedest\u00e4 ilmaan. <b>Tietyss\u00e4 kulmassa \u2013 niin sanotussa kriittisess\u00e4 kulmassa \u2013 valo ei en\u00e4\u00e4 p\u00e4\u00e4sek\u00e4\u00e4n ulos vedest\u00e4 lainkaan.<\/b> T\u00e4t\u00e4 ilmi\u00f6t\u00e4 kutsutaan kokonaisheijastukseksi.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-35622 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/618af3fb7d202303bf9d29b7f77ed0c5.jpg\" alt=\"\" width=\"531\" height=\"299\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/618af3fb7d202303bf9d29b7f77ed0c5.jpg 926w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/618af3fb7d202303bf9d29b7f77ed0c5-300x169.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/618af3fb7d202303bf9d29b7f77ed0c5-768x433.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/618af3fb7d202303bf9d29b7f77ed0c5-320x180.jpg 320w\" sizes=\"auto, (max-width: 531px) 100vw, 531px\" \/><\/p>\n<p><iframe loading=\"lazy\" title=\"\u5149\u304c\u6c34\u304b\u3089\u5916\u306b\u51fa\u308b\u6642\u306b\u3069\u306e\u3088\u3046\u306b\u9032\u3080\u306e\u304b\uff1f\uff08\u5149\u306e\u5c48\u6298\u30fb\u53cd\u5c04\u30fb\u5168\u53cd\u5c04\uff09\u5149\u5b66\u6c34\u69fd\" width=\"563\" height=\"1000\" src=\"https:\/\/www.youtube.com\/embed\/hlyJWtFGw_8?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 siis kokonaisheijastusta ei synny ilmasta veteen ment\u00e4ess\u00e4, mutta vedest\u00e4 ilmaan kyll\u00e4? Tavallaan voisi sanoa vain, ett\u00e4 \u201cvalo k\u00e4ytt\u00e4ytyy niin\u201d. Mutta ilmi\u00f6t\u00e4 voidaan ymm\u00e4rt\u00e4\u00e4 paljon paremmin k\u00e4ytt\u00e4m\u00e4ll\u00e4 <b>Huygensin periaatetta<\/b>.<\/p>\n<h3>Koulun urheilup\u00e4iv\u00e4n \u201ctaifuunisilm\u00e4\u201d-leikki auttaa ymm\u00e4rt\u00e4m\u00e4\u00e4n Huygensin periaatteen<\/h3>\n<p>Huygensin periaate tarkoittaa sit\u00e4, ett\u00e4 <b>valo ja aallot ajatellaan pienempien aaltojen muodostamaksi kokonaisuudeksi<\/b>. Vaikka t\u00e4m\u00e4 kuuluu lukion fysiikkaan, sit\u00e4 voi selitt\u00e4\u00e4 yll\u00e4tt\u00e4v\u00e4n arkisella esimerkill\u00e4: koulun urheilup\u00e4iv\u00e4n \u201ctaifuunisilm\u00e4\u201d-kisalla. Siin\u00e4 joukko oppilaita pit\u00e4\u00e4 kiinni pitk\u00e4st\u00e4 kepist\u00e4 ja juoksee pylv\u00e4\u00e4n ymp\u00e4ri.<\/p>\n<p><iframe loading=\"lazy\" title=\"\u5c48\u6298\u306e\u6cd5\u5247\u3068\u904b\u52d5\u4f1a\u306e\u53f0\u98a8\u306e\u76ee\uff08\u30ea\u30e2\u30fc\u30c8\u6388\u696d\uff09\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/JAkbjGvKgME?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>Kuvitellaan kaksi nukkea juoksemassa keppi\u00e4 kantaen. Kun ne kiert\u00e4v\u00e4t pylv\u00e4st\u00e4, <b>sis\u00e4puolella oleva hidastaa askeliaan, mutta ulkopuolella oleva jatkaa samaa vauhtia. T\u00e4ll\u00f6in keppi py\u00f6r\u00e4ht\u00e4\u00e4.<\/b> Kun nopeudet eroavat toisistaan, keppi ei en\u00e4\u00e4 kulje suoraan vaan kaartuu.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-63255 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-10-4.45.47.jpeg\" alt=\"\" width=\"403\" height=\"214\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-10-4.45.47.jpeg 1388w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-10-4.45.47-300x159.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-10-4.45.47-1024x543.jpeg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-10-4.45.47-768x407.jpeg 768w\" sizes=\"auto, (max-width: 403px) 100vw, 403px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-63256 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-10-4.46.15.jpeg\" alt=\"\" width=\"403\" height=\"225\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-10-4.46.15.jpeg 1396w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-10-4.46.15-300x168.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-10-4.46.15-1024x572.jpeg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-10-4.46.15-768x429.jpeg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-10-4.46.15-320x180.jpeg 320w\" sizes=\"auto, (max-width: 403px) 100vw, 403px\" \/><\/p>\n<p>Valolle tapahtuu t\u00e4sm\u00e4lleen sama asia. Samassa aineessa, kuten ilmassa, <b>valo etenee suoraviivaisesti kohtisuoraan aaltorintamaa vastaan.<\/b><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-63252 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-10-4.43.27.jpeg\" alt=\"\" width=\"403\" height=\"305\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-10-4.43.27.jpeg 940w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-10-4.43.27-300x227.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-10-4.43.27-768x582.jpeg 768w\" sizes=\"auto, (max-width: 403px) 100vw, 403px\" \/><\/p>\n<p>Kun valo kuitenkin osuu veden pintaan, veden puolella kulkeva valo hidastuu. T\u00e4m\u00e4 vastaa tilannetta, jossa sis\u00e4puolella oleva juoksija hidastaa vauhtiaan. T\u00e4m\u00e4n seurauksena <b>aaltorintama k\u00e4\u00e4ntyy, ja samalla my\u00f6s valon kulkusuunta muuttuu.<\/b> T\u00e4t\u00e4 kutsutaan taittumiseksi.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-63253 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-10-4.43.33.jpeg\" alt=\"\" width=\"468\" height=\"348\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-10-4.43.33.jpeg 938w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-10-4.43.33-300x223.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-10-4.43.33-768x571.jpeg 768w\" sizes=\"auto, (max-width: 468px) 100vw, 468px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-63254 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-10-4.43.44.jpeg\" alt=\"\" width=\"453\" height=\"343\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-10-4.43.44.jpeg 938w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-10-4.43.44-300x227.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-10-4.43.44-768x581.jpeg 768w\" sizes=\"auto, (max-width: 453px) 100vw, 453px\" \/> <\/p>\n<h3>Kokonaisheijastuksen salaisuus \u2013 miksi se tapahtuu vain vedest\u00e4 ilmaan?<\/h3>\n<p>Palataan alkuper\u00e4iseen kysymykseen. <b>Kun valo kulkee ilmasta veteen, sen nopeus hidastuu veden sis\u00e4ll\u00e4.<\/b> Aaltorintama taipuu veden puolelle, mutta valo jatkaa silti aina veden sis\u00e4\u00e4n. Oli tulokulma mik\u00e4 tahansa, valo p\u00e4\u00e4see veteen.<\/p>\n<p>Mutta <b>kun valo kulkee vedest\u00e4 ilmaan, sen nopeus kasvaa ilmassa.<\/b> Aaltorintama yritt\u00e4\u00e4 kaartua ulosp\u00e4in, kohti ilmaa. Jos tulokulma kasvaa liian suureksi, taittunut valo yritt\u00e4isi kulkea veden pinnan suuntaisesti \u2013 tai jopa sen yli. Se ei en\u00e4\u00e4 onnistu fysikaalisesti, joten <b>kaikki valo heijastuu takaisin veden sis\u00e4\u00e4n.<\/b> T\u00e4m\u00e4 on kokonaisheijastus.<\/p>\n<p>Toisin sanoen:<\/p>\n<p><b>Nopeammasta aineesta hitaampaan siirtyess\u00e4 kokonaisheijastusta ei tapahdu.<\/b><br \/>\n<b>Hitaammasta aineesta nopeampaan siirtyess\u00e4 kokonaisheijastus voi synty\u00e4.<\/b><\/p>\n<p>Siin\u00e4 piilee koko ilmi\u00f6n ydin.<\/p>\n<h3>Kokeile itse simulaation avulla<\/h3>\n<p>Pelkk\u00e4 teksti ja kuvat eiv\u00e4t aina riit\u00e4. Kun ilmi\u00f6n n\u00e4kee liikkeess\u00e4, se muuttuu paljon helpommin ymm\u00e4rrett\u00e4v\u00e4ksi. Tein Scratchilla simulaation, jota kannattaa ehdottomasti kokeilla itse.<\/p>\n<p style=\"text-align: center;\"><iframe loading=\"lazy\" src=\"https:\/\/scratch.mit.edu\/projects\/216301701\/embed\" width=\"485\" height=\"402\" frameborder=\"0\" scrolling=\"no\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/scratch.mit.edu\/projects\/216301701\/\">Scratch-simulaatio<\/a><\/p>\n<p><iframe loading=\"lazy\" title=\"[ Refraction ] The principle of Huygens\u3000\u5c48\u6298\u306e\u6cd5\u5247\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/C-U5IpDF5KQ?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>Kokonaisheijastus ei ole vain oppikirjojen ilmi\u00f6. Sit\u00e4 hy\u00f6dynnet\u00e4\u00e4n jatkuvasti my\u00f6s arkiel\u00e4m\u00e4ss\u00e4. <b>Valokuitukaapelit<\/b> ovat t\u00e4st\u00e4 loistava esimerkki. Valo pomppii kuidun sis\u00e4ll\u00e4 kokonaisheijastuksen avulla pitki\u00e4 matkoja, mahdollistaen internetyhteydet ja esimerkiksi l\u00e4\u00e4ketieteelliset endoskoopit.<\/p>\n<p>Aika h\u00e4mm\u00e4stytt\u00e4v\u00e4\u00e4 ajatella, ett\u00e4 pieni kysymys vihkon reunassa liittyy suoraan modernin teknologian perustaan. Juuri t\u00e4llaiset hetket tekev\u00e4t luonnontieteist\u00e4 niin kiehtovia.<\/p>\n<h3>Yhteydenotot ja yhteisty\u00f6<\/h3>\n<p>Tiede kuuluu kaikille! Sivustolta l\u00f6yd\u00e4t helposti kotona kokeiltavia tiedekokeita sek\u00e4 selkeit\u00e4 vinkkej\u00e4 niiden toteuttamiseen. Kannattaa tutkia lis\u00e4\u00e4!<\/p>\n<p>\u30fbTiedeblogin sis\u00e4ll\u00f6ist\u00e4 on tehty my\u00f6s kirja. Lis\u00e4tiedot <a href=\"https:\/\/amzn.to\/42PMCEL\">t\u00e4\u00e4ll\u00e4<\/a><br \/>\n\u30fbLis\u00e4tietoa blogin kirjoittajasta Kuwako Kenist\u00e4 <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=37\">t\u00e4\u00e4ll\u00e4<\/a><br \/>\n\u30fbYhteisty\u00f6pyynn\u00f6t (kirjoitukset, luennot, tiedety\u00f6pajat, TV-valvonta ja esiintymiset) <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">t\u00e4\u00e4ll\u00e4<\/a><br \/>\n<span class=\"s2\">\u30fbUudet artikkelit p\u00e4ivittyv\u00e4t my\u00f6s <a href=\"https:\/\/x.com\/kuwako\">X:\u00e4\u00e4n<\/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\">Tiedenikkarien YouTube-kanavalla<\/a> julkaistaan jatkuvasti uusia kokeiluvideoita!<\/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>T\u00e4ss\u00e4 tiedeblogia pit\u00e4v\u00e4 Kuwako Ken. Jokainen p\u00e4iv\u00e4 on uusi koe. &#8220;Opettaja, miksi kokonaisheijastusta ei [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":35624,"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-63266","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\/2020\/04\/584cbdc9b7f6924085f7e2737511121c.jpg","jetpack-related-posts":[{"id":59938,"url":"https:\/\/phys-edu.net\/wp\/?p=59938&lang=fi","url_meta":{"origin":63266,"position":0},"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":58015,"url":"https:\/\/phys-edu.net\/wp\/?p=58015&lang=fi","url_meta":{"origin":63266,"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. 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