{"id":55854,"date":"2025-11-13T05:11:05","date_gmt":"2025-11-12T20:11:05","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=55854"},"modified":"2025-11-13T05:11:05","modified_gmt":"2025-11-12T20:11:05","slug":"pyydysta-valon-taittuminen-nelja-nuppineulaa-paljastaa-valon-salaisen-reitin-pystytko-paljastamaan-valokuvahuijauksen","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=55854&lang=fi","title":{"rendered":"Pyydyst\u00e4 valon taittuminen! Nelj\u00e4 nuppineulaa paljastaa valon salaisen reitin (Pystytk\u00f6 paljastamaan valokuvahuijauksen?)"},"content":{"rendered":"<p style=\"text-align: center;\"><strong style=\"color: #339966;\">Olen Ken Kuwako, tiedeohjaaja. Jokainen p\u00e4iv\u00e4 on koe.<\/strong><\/p>\n<p>Oletko koskaan huomannut, kuinka juomalasiin upotettu pilli n\u00e4ytt\u00e4\u00e4 taipuneelta tai uima-altaan pohja vaikuttaa todellista matalammalta? N\u00e4m\u00e4 kaikki ovat ilmi\u00f6it\u00e4, jotka johtuvat valon &#8220;taittumisesta&#8221; \u2013 toisin sanoen, siit\u00e4 ett\u00e4 valo muuttaa suuntaa.<\/p>\n<p>Valon suunnanmuutos on kuitenkin vaikea hahmottaa, sill\u00e4 emme n\u00e4e valon kulkureitti\u00e4. Oppikirjojen kaaviot eiv\u00e4t sytyt\u00e4 kipin\u00e4\u00e4 opiskelijoissa. Siksi esittelen t\u00e4n\u00e4\u00e4n nerokkaan kokeen, jolla n\u00e4kym\u00e4t\u00f6n valon kulkureitti voidaan &#8220;napata kiinni&#8221; ja tehd\u00e4 n\u00e4kyv\u00e4ksi!<\/p>\n<p>K\u00e4yt\u00e4mme kokeessa perinteist\u00e4 tiedeluokan v\u00e4linett\u00e4: &#8220;lasikuutiota&#8221; (tai lasipalikkaa). Mutta lis\u00e4\u00e4m\u00e4ll\u00e4 vain yhden, yll\u00e4tt\u00e4v\u00e4n arkitavaran, oppilaiden &#8220;Ahaa!&#8221;-oivallukset tuplaantuvat! T\u00e4m\u00e4 salainen ase on ompelulaatikosta l\u00f6ytyv\u00e4 nuppineula!<\/p>\n<p>Jos ajattelit: &#8220;Mit\u00e4 ihmett\u00e4?!&#8221;, se on loistavaa! T\u00e4m\u00e4n kokeen avulla selvit\u00e4mme, miksi valo taittuu ja miten yll\u00e4 olevan kaltaisia, p\u00e4\u00e4n ja kaulan toisistaan irrottavia, illuusioita syntyy. Pureudutaan mysteeriin!<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-40330 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/05\/a9f75615eb405282e7ae46e84dd84f67.jpg\" sizes=\"auto, (max-width: 432px) 100vw, 432px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/05\/a9f75615eb405282e7ae46e84dd84f67.jpg 914w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/05\/a9f75615eb405282e7ae46e84dd84f67-291x300.jpg 291w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/05\/a9f75615eb405282e7ae46e84dd84f67-768x792.jpg 768w\" alt=\"\" width=\"247\" height=\"254\" \/><\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"QW7cybwYMa\"><p><a href=\"https:\/\/phys-edu.net\/wp\/?p=40329\">\u982d\u3068\u9996\u304c\u5206\u304b\u308c\u305f\uff01\u30d7\u30fc\u30eb\u3067\u4f53\u304c\u5206\u304b\u308c\u308b\u9a5a\u304d\u306e\u30c8\u30ea\u30c3\u30af\u5199\u771f\uff01\uff08\u5149\u306e\u5c48\u6298\uff09<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"&#8221;\u982d\u3068\u9996\u304c\u5206\u304b\u308c\u305f\uff01\u30d7\u30fc\u30eb\u3067\u4f53\u304c\u5206\u304b\u308c\u308b\u9a5a\u304d\u306e\u30c8\u30ea\u30c3\u30af\u5199\u771f\uff01\uff08\u5149\u306e\u5c48\u6298\uff09&#8221; &#8212; \u79d1\u5b66\u306e\u30cd\u30bf\u5e33\" src=\"https:\/\/phys-edu.net\/wp\/?p=40329&#038;embed=true#?secret=SVEB8scghb#?secret=QW7cybwYMa\" data-secret=\"QW7cybwYMa\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<p style=\"text-align: center;\">\uff08T\u00e4m\u00e4 tehokas kokeellinen menetelm\u00e4 on muuten kollegani, opettaja S:n, ansiota. H\u00e4nen vinkkins\u00e4 syvensi ymm\u00e4rryst\u00e4ni entisest\u00e4\u00e4n. Loistava koe!\uff09<\/p>\n<h3>Tarvikkeet<\/h3>\n<ul>\n<li><span style=\"font-size: 14px;\"><strong>Lasikuutio<\/strong> (suorakulmainen): Yksi opiskelijaa\/ryhm\u00e4\u00e4 kohden.<\/span><\/li>\n<li>Piirustuspaperia (n. A4-koko): Valkoinen paperi auttaa n\u00e4kem\u00e4\u00e4n valon reitin.<\/li>\n<li>Nuppineuloja: 4 kpl per opiskelija\/ryhm\u00e4 (ota reilusti varalle!).<\/li>\n<li>Valonl\u00e4hde\/laserosoitin: Laserosoitin toimii korvikkeena, mutta laite, jolla saa valon kulkemaan viivana, on paras.<\/li>\n<li>Lyijykyn\u00e4 ja viivotin<\/li>\n<li>(Valinnainen) Piment\u00e4v\u00e4 verho\/kangas: Jos luokkahuoneen saa pimennetty\u00e4, valon reitti n\u00e4kyy selke\u00e4mmin.<\/li>\n<\/ul>\n<h3>Kokeen suoritus: Valon reitin &#8220;visualisointi&#8221;<\/h3>\n<p>Jotta oppilaat p\u00e4\u00e4sev\u00e4t tekem\u00e4\u00e4n itsen\u00e4isesti, seuraa n\u00e4it\u00e4 ohjeita. Kokeen ty\u00f6turvallisuuslomakkeen voit ladata t\u00e4st\u00e4:<\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/158d9643abe9aa6ea3974702ad53f14d.pdf\">Valon taittumisen ty\u00f6kirja (PDF)<\/a><\/p>\n<div id=\"attachment_49416\" style=\"width: 209px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-49416\" class=\" wp-image-49416\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/8379335b512bddb44743101748f7f236.jpg\" alt=\"\" width=\"199\" height=\"211\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/8379335b512bddb44743101748f7f236.jpg 462w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/8379335b512bddb44743101748f7f236-282x300.jpg 282w\" sizes=\"auto, (max-width: 199px) 100vw, 199px\" \/><p id=\"caption-attachment-49416\" class=\"wp-caption-text\">Ty\u00f6kirja<\/p><\/div>\n<p>Koska ty\u00f6 on hieman pikkutarkkaa, on suositeltavaa katsoa video etuk\u00e4teen:<\/p>\n<p><iframe loading=\"lazy\" title=\"\u6559\u79d1\u66f8\u3060\u3051\u3058\u3083\u4f1d\u308f\u3089\u306a\u3044\uff01\u8c61\u3068\u5149\u7dda\u306e\u5c48\u6298\u3092\u4f53\u611f\u3059\u308b\u30de\u30c1\u91dd\u3092\u4f7f\u3063\u305f\u5b9f\u9a13\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/ipHKZ1wgcu4?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<h4>1. &#8220;Jahtaa&#8221; valon reitti\u00e4 nuppineuloilla<\/h4>\n<p>Aseta ensin lasikuutio piirustuspaperille ja piirr\u00e4 sen \u00e4\u00e4riviivat lyijykyn\u00e4ll\u00e4. Ota kuutio sivuun ja pist\u00e4 kaksi nuppineulaa paperille sopivaan kohtaan (merkitse pisteet). N\u00e4m\u00e4 toimivat &#8220;valonl\u00e4hteen\u00e4&#8221; (eli kohteena, jota katsotaan).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-49417 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/5f97715ff50a283097e4221148a40355.jpg\" alt=\"\" width=\"241\" height=\"170\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/5f97715ff50a283097e4221148a40355.jpg 1138w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/5f97715ff50a283097e4221148a40355-300x210.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/5f97715ff50a283097e4221148a40355-1024x718.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/5f97715ff50a283097e4221148a40355-768x539.jpg 768w\" sizes=\"auto, (max-width: 241px) 100vw, 241px\" \/><\/p>\n<p>Aseta lasikuutio takaisin paikoilleen ja katso lasin sivusta kahta juuri pistetty\u00e4 nuppineulaa.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-50611 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-08-07-6.39.17.jpg\" alt=\"\" width=\"427\" height=\"261\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-08-07-6.39.17.jpg 894w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-08-07-6.39.17-300x184.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-08-07-6.39.17-768x471.jpg 768w\" sizes=\"auto, (max-width: 427px) 100vw, 427px\" \/><\/p>\n<p>T\u00e4ss\u00e4 on t\u00e4rkein vaihe! Siirr\u00e4 katsettasi, kunnes n\u00e4et lasin l\u00e4pi katsottuna <span style=\"font-size: 14px;\">molemmat neulat t\u00e4ydellisesti p\u00e4\u00e4llekk\u00e4in, ik\u00e4\u00e4n kuin ne olisivat yksi ainoa neula.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-49418 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/e321d4ceb260852c77612d39a98dd915.jpg\" alt=\"\" width=\"383\" height=\"267\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/e321d4ceb260852c77612d39a98dd915.jpg 1016w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/e321d4ceb260852c77612d39a98dd915-300x209.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/e321d4ceb260852c77612d39a98dd915-768x535.jpg 768w\" sizes=\"auto, (max-width: 383px) 100vw, 383px\" \/><\/p>\n<p><span style=\"font-size: 14px;\">Kun neulat n\u00e4ytt\u00e4v\u00e4t yhdelt\u00e4, pist\u00e4 kolmas nuppineula tarkalleen katseesi linjalle.<\/span>\uff08Pist\u00e4 se l\u00e4helle lasin etureunaa\uff09<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-49419 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/e6d88b8ba4709477e240017b28f76a34.jpg\" alt=\"\" width=\"387\" height=\"277\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/e6d88b8ba4709477e240017b28f76a34.jpg 1006w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/e6d88b8ba4709477e240017b28f76a34-300x215.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/e6d88b8ba4709477e240017b28f76a34-768x551.jpg 768w\" sizes=\"auto, (max-width: 387px) 100vw, 387px\" \/><\/p>\n<p><span style=\"font-size: 14px;\">Pid\u00e4 katseesi samassa linjassa ja pist\u00e4 lopuksi nelj\u00e4s nuppineula viel\u00e4 l\u00e4hemm\u00e4s itse\u00e4si kuin kolmas neula.<\/span> Nyt silm\u00e4si (neulat 4 ja 3) ja lasin l\u00e4pi n\u00e4kyv\u00e4 kuva (neulat 2 ja 1) ovat samassa suorassa linjassa!<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-49420 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/ec104e044f43cfc8352fa07bc8a9e9b2.jpg\" alt=\"\" width=\"417\" height=\"326\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/ec104e044f43cfc8352fa07bc8a9e9b2.jpg 1014w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/ec104e044f43cfc8352fa07bc8a9e9b2-300x235.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/ec104e044f43cfc8352fa07bc8a9e9b2-768x601.jpg 768w\" sizes=\"auto, (max-width: 417px) 100vw, 417px\" \/><\/p>\n<h4>2. Yhdist\u00e4 pisteet ja vahvista taittuminen!<\/h4>\n<p>Ota nyt varovasti pois lasikuutio ja kaikki nelj\u00e4 nuppineulaa. Paperille j\u00e4\u00e4 nelj\u00e4 pistett\u00e4, joihin neulat oli pistetty.<\/p>\n<p>Yhdist\u00e4 ensin kaksi kauimmaista pistett\u00e4 (1. ja 2. neula) viivottimella. T\u00e4m\u00e4 on valo, joka kulkee l\u00e4hteest\u00e4 lasiin. Yhdist\u00e4 seuraavaksi kaksi l\u00e4hint\u00e4 pistett\u00e4 (3. ja 4. neula). T\u00e4m\u00e4 on valo, joka kulkee lasista silm\u00e4\u00e4si. Yhdist\u00e4 lopuksi n\u00e4m\u00e4 kaksi viivaa lasikuution \u00e4\u00e4riviivojen sis\u00e4ll\u00e4.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-49421 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/53806bf14d9e141f95f153de3630ae26.jpg\" alt=\"\" width=\"344\" height=\"332\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/53806bf14d9e141f95f153de3630ae26.jpg 882w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/53806bf14d9e141f95f153de3630ae26-300x290.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/53806bf14d9e141f95f153de3630ae26-768x742.jpg 768w\" sizes=\"auto, (max-width: 344px) 100vw, 344px\" \/><\/p>\n<p>Mit\u00e4 n\u00e4et? Eik\u00f6 valon reitti &#8220;napsahda&#8221; kulmikkaasti, kun se menee lasin sis\u00e4\u00e4n ja sielt\u00e4 ulos? T\u00e4m\u00e4 on se hetki, kun n\u00e4kym\u00e4t\u00f6n &#8220;valon taittuminen&#8221; on saatu nuppineuloilla kiinni!<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-49422 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/a623994b2a1ffd46c2fada062f169a35.jpg\" alt=\"\" width=\"343\" height=\"302\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/a623994b2a1ffd46c2fada062f169a35.jpg 878w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/a623994b2a1ffd46c2fada062f169a35-300x264.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/a623994b2a1ffd46c2fada062f169a35-768x675.jpg 768w\" sizes=\"auto, (max-width: 343px) 100vw, 343px\" \/><\/p>\n<h4>3. Varmistus: Valaise valon reitti.<\/h4>\n<p>Kokeen viimeistelyss\u00e4 pimennet\u00e4\u00e4n luokkahuonetta hieman. K\u00e4yt\u00e4 valonl\u00e4hdett\u00e4 (laseria) ja suuntaa valo nuppineulojen &#8220;k\u00e4\u00e4nteist\u00e4&#8221; reitti\u00e4 pitkin (4. neulan pisteest\u00e4 3. neulan pisteeseen).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-49423 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/3732477a3c4883d5515741bd52b98042.jpg\" alt=\"\" width=\"324\" height=\"354\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/3732477a3c4883d5515741bd52b98042.jpg 796w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/3732477a3c4883d5515741bd52b98042-274x300.jpg 274w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/3732477a3c4883d5515741bd52b98042-768x839.jpg 768w\" sizes=\"auto, (max-width: 324px) 100vw, 324px\" \/><\/p>\n<p>Kun valo kulkee lasin l\u00e4pi, sen pit\u00e4isi jatkaa suoraan kohti 1. ja 2. neulan reiki\u00e4. Kun oppilaat n\u00e4kev\u00e4t, ett\u00e4 heid\u00e4n piirt\u00e4m\u00e4ns\u00e4 viiva vastaa todellista valons\u00e4dett\u00e4, heilt\u00e4 p\u00e4\u00e4see varmasti \u00e4\u00e4nek\u00e4s &#8220;Vau, se on totta!&#8221; -huudahdus.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-49424 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/ac9e0595b25eab0ca617c749f8940b9b.jpg\" alt=\"\" width=\"317\" height=\"337\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/ac9e0595b25eab0ca617c749f8940b9b.jpg 814w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/ac9e0595b25eab0ca617c749f8940b9b-283x300.jpg 283w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/ac9e0595b25eab0ca617c749f8940b9b-768x815.jpg 768w\" sizes=\"auto, (max-width: 317px) 100vw, 317px\" \/><\/p>\n<h3>Mysteeri ratkeaa! Miksi valo taittuu?<\/h3>\n<p>Miksi valo taittuu (muuttaa suuntaa)? Siksi, ett\u00e4 valon nopeus on erilainen ilmassa, lasissa (tai vedess\u00e4).<\/p>\n<p>Valo kulkee lasissa hitaammin kuin ilmassa. Kun suoraan kulkeva valo osuu lasiin vinosti, lasiin ensin saapunut osa hidastuu ensimm\u00e4isen\u00e4, kun taas per\u00e4ss\u00e4 tuleva osa etenee viel\u00e4 nopeammin&#8230; T\u00e4m\u00e4 &#8220;nopeusero&#8221; pakottaa valon k\u00e4\u00e4ntym\u00e4\u00e4n.<\/p>\n<p>Nyt voimme ratkaista my\u00f6s alun illuusion salaisuuden!<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\u00a0 wp-image-55602 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-11-08-6.24.50.jpg\" alt=\"\" width=\"607\" height=\"342\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-11-08-6.24.50.jpg 1570w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-11-08-6.24.50-300x169.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-11-08-6.24.50-1024x577.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-11-08-6.24.50-768x432.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-11-08-6.24.50-1536x865.jpg 1536w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-11-08-6.24.50-320x180.jpg 320w\" sizes=\"auto, (max-width: 607px) 100vw, 607px\" \/><\/p>\n<p>Kuvassa, jossa &#8220;p\u00e4\u00e4 ja kaula ovat erill\u00e4\u00e4n&#8221;, on kyse t\u00e4sm\u00e4lleen samasta periaatteesta. Valo kulkee tankin (lasi ja vesi) ja ilman l\u00e4pi \u2013 alueilla, joissa valon nopeus on erilainen. Siksi kaulasta l\u00e4htev\u00e4 valo &#8220;taittuu&#8221; ennen kuin se saavuttaa silm\u00e4mme.<\/p>\n<p>Aivomme ovat kuitenkin hyvin suoraviivaiset, emmek\u00e4 oleta valon taittuneen. Uskomme, ett\u00e4 &#8220;valo kulkee suoraan&#8221;. T\u00e4m\u00e4n seurauksena me &#8220;erehdymme&#8221; luulemaan, ett\u00e4 kaula sijaitsee taittuneen valons\u00e4teen &#8220;jatkeella&#8221;.<\/p>\n<p>Siksi kaula n\u00e4ytt\u00e4\u00e4 olevan eri paikassa kuin miss\u00e4 se todellisuudessa on. Nuppineulakoe on loistava tapa paljastaa sek\u00e4 &#8220;aivojen erehdys&#8221; ett\u00e4 &#8220;valon todellinen kulkureitti&#8221;!<\/p>\n<h3>Yhteydenotot ja tiedustelut<\/h3>\n<p>Tee tieteen ihmeist\u00e4 ja hauskuudesta itsellesi entist\u00e4 l\u00e4heisemp\u00e4\u00e4! Olen koonnut helppoja ja hauskoja tiedekokeita, jotka voi tehd\u00e4 kotioloissa, sek\u00e4 vinkkej\u00e4 niiden onnistumiseen. Kannattaa selailla lis\u00e4\u00e4! \u30fbTietoa minusta, Ken Kuwakosta, l\u00f6yd\u00e4t <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=37\">t\u00e4\u00e4lt\u00e4<\/a> \u30fbTiedustelut eri toimeksiannoista (kirjoittaminen, luennot, tiedekerhot, TV-konsultointi\/esiintymiset jne.) <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">t\u00e4\u00e4lt\u00e4<\/a> <span class=\"s2\">\u30fbSaat tietoa uusista artikkeleista seuraamalla minua <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\">Tieteen Juttuja -kanavalla<\/a> julkaisen kokeellisia videoita!<\/p>\n<h3>\uff13\u6708\u306e\u30a4\u30c1\u30aa\u30b7\u5b9f\u9a13\uff01<\/h3>\r\n<ul>\r\n<li><a href=\"https:\/\/phys-edu.net\/wp\/?p=44853\">\u62bc\u3057\u82b1\u3092\u4f5c\u308d\u3046\uff01<\/a>\uff1a\u6885\u3084\u685c\u306e\u82b1\u306e\u62bc\u3057\u82b1\u3092\u4f5c\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u7279\u5225\u306a\u30b1\u30fc\u30b9\u306b\u5165\u308c\u308b\u3068\u3001\u9577\u304f\u4fdd\u5b58\u3067\u304d\u3066\u3001\u3057\u304a\u308a\u306b\u3082\u306a\u308a\u307e\u3059\u3002<\/li>\r\n<\/ul>\r\n<p><a href=\"https:\/\/phys-edu.net\/wp\/?p=44853\"><img class=\"alignnone wp-image-45250 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/6f7f8f2c6502a509617154ad6401e859.jpg\" alt=\"\" width=\"291\" height=\"302\" \/><\/a><\/p>\r\n<h3 style=\"text-align: left;\"><span style=\"font-size: medium;\"><b><strong>\u30c6\u30ec\u30d3\u756a\u7d44\u30fb\u79d1\u5b66\u76e3\u4fee\u7b49\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/span><\/h3>\r\n<ul>\r\n<li>\u300c<a href=\"https:\/\/phys-edu.net\/wp\/?p=59767\">\u6708\u66dc\u304b\u3089\u591c\u66f4\u304b\u3057<\/a>\u300d\uff08\u65e5\u672c\u30c6\u30ec\u30d3\uff09\u306b\u3066\u79d1\u5b66\u76e3\u4fee\u30fb\u51fa\u6f14\u3057\u307e\u3057\u305f\u3002<\/li>\r\n<li><a href=\"https:\/\/phys-edu.net\/wp\/?p=60859\">2\u670827\u65e5\u653e\u9001\u4e88\u5b9a\u300c\u30c1\u30b3\u3061\u3083\u3093\u306b\u53f1\u3089\u308c\u308b\u300d\uff08NHK\uff09\u306e\u79d1\u5b66\u76e3\u4fee\u3057\u307e\u3057\u305f<\/a>\u3002<\/li>\r\n<\/ul>\r\n<h3><span style=\"font-size: medium;\"><b>\u66f8\u7c4d<strong>\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/span><\/h3>\r\n<ul>\r\n<li>1\/27 <a href=\"https:\/\/phys-edu.net\/wp\/?p=59153\">\u300e\u898b\u3048\u306a\u3044\u529b\u3068\u904a\u307c\u3046\uff01\u96fb\u6c17\u30fb\u78c1\u77f3\u30fb\u71b1\u306e\u5b9f\u9a13\u300f\uff08\u5de5\u5b66\u793e\uff09\u3092\u57f7\u7b46\u3057\u307e\u3057\u305f<\/a>\u3002<\/li>\r\n<li><a href=\"https:\/\/phys-edu.net\/wp\/?p=58878\">\u30b5\u30af\u30bb\u30b915 \uff12\u6708\u53f7<\/a>\u306b\u3066\u300c\u6d78\u900f\u5727\u300d\u306b\u95a2\u3059\u308b\u79d1\u5b66\u8a18\u4e8b\u3092\u57f7\u7b46\u3057\u307e\u3057\u305f\u3002<\/li>\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 <a href=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0.jpg\"><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\" \/><\/a> <\/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 <a href=\"https:\/\/amzn.to\/4aNldWh\"><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\" \/><\/a><\/li>\r\n<\/ul>\r\n<h3><span style=\"font-size: medium;\"><b>\u8b1b\u5e2b\u30fb\u30b7\u30e7\u30fc\u30fb\u305d\u306e\u4ed6\u304a\u77e5\u3089\u305b<\/b><\/span><\/h3>\r\n<ul>\r\n<li>3\/20\uff08\u91d1\uff09\u3000\u65e5\u672c\u7406\u79d1\u6559\u80b2\u5b66\u4f1a\u30aa\u30f3\u30e9\u30a4\u30f3\u5168\u56fd\u5927\u4f1a2026\u300c<a href=\"https:\/\/phys-edu.net\/wp\/?p=60439\">\u6163\u6027\u306e\u6cd5\u5247\u306e\u6982\u5ff5\u5f62\u6210\u3092\u76ee\u6307\u3057\u305f\u63a2\u7a76\u7684\u306a\u5b66\u3073\u306e\u5b9f\u8df5\u300d\u306b\u3064\u3044\u3066\u767a\u8868<\/a>\u3057\u307e\u3059\u3002B\u4f1a\u5834 \u7b2c\uff13\u30bb\u30c3\u30b7\u30e7\u30f3\uff1a \u5b66\u7fd2\u6307\u5c0e\u30fb\u6559\u6750\uff08\u4e2d\u5b66\u6821\uff09\u2462\u300011:20-12:20<\/li>\r\n<li>7\/18\uff08\u571f\uff09\u3000<a href=\"https:\/\/phys-edu.net\/wp\/?p=60018\">\u6559\u54e1\u5411\u3051\u5b9f\u9a13\u8b1b\u7fd2\u4f1a\u300c\u30ca\u30ea\u30ab\u30ab\u30b5\u30a4\u30a8\u30f3\u30b9\u30a2\u30ab\u30c7\u30df\u30fc\u300d\u306e\u8b1b\u5e2b\u3092\u3057\u307e\u3059<\/a>\u3002\u304a\u4f1a\u3044\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\r\n<li>10\/10\uff08\u571f\uff09\u3000\u79d8\u5bc6\u5175\u5668\u300c\u5e2f\u96fb\u30ac\u30f3\u300d\u304c\u70b8\u88c2\uff01\u30d3\u30ea\u30d3\u30ea\uff01\u30c9\u30ad\u30c9\u30ad\uff01\u9759\u96fb\u6c17\u30b5\u30a4\u30a8\u30f3\u30b9\u30b7\u30e7\u30fc\uff20\u5343\u8449\u5e02\u79d1\u5b66\u30d5\u30a7\u30b9\u30bf\uff08\u5348\u5f8c\u4e88\u5b9a\uff09<\/li>\r\n<li><span style=\"text-align: center;\">\u5404\u7a2eSNS\u3000<\/span><a style=\"text-align: center;\" href=\"https:\/\/twitter.com\/kuwako\">X(Twitter)<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.instagram.com\/science_seeds\/\">instagram<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.facebook.com\/kuwakolab\/\">Facebook<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/bsky.app\/profile\/kagakunoneta.bsky.social\">BlueSky<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.threads.net\/@science_seeds?hl=ja\">Threads<\/a><\/li>\r\n<\/ul>\r\n<h3 style=\"text-align: center;\"><strong>Explore<\/strong><\/h3>\r\n<ul>\r\n<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>\u00a0\u2026\u5b9f\u9a13\u6559\u5ba4\u306e\u3054\u4f9d\u983c\u3001\u57f7\u7b46\u30fb\u8b1b\u6f14\u306e\u76f8\u8ac7\u3001\u79d1\u5b66\u76e3\u4fee\u7b49\u306f\u3053\u3061\u3089\u306e\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u304a\u5bc4\u305b\u304f\u3060\u3055\u3044\u3002<\/li>\r\n<\/ul>\r\n","protected":false},"excerpt":{"rendered":"<p>Olen Ken Kuwako, tiedeohjaaja. Jokainen p\u00e4iv\u00e4 on koe. Oletko koskaan huomannut, kuinka juomalasiin upotettu pi [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":49419,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","vkexunit_cta_each_option":"","footnotes":""},"categories":[1630],"tags":[],"class_list":["post-55854","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\/06\/e6d88b8ba4709477e240017b28f76a34.jpg","jetpack-related-posts":[{"id":58015,"url":"https:\/\/phys-edu.net\/wp\/?p=58015&lang=fi","url_meta":{"origin":55854,"position":0},"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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