{"id":66237,"date":"2026-08-06T05:16:02","date_gmt":"2026-08-05T20:16:02","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=66237"},"modified":"2026-08-06T05:16:02","modified_gmt":"2026-08-05T20:16:02","slug":"miksi-pyoriva-kiekko-ei-kaadu-koe-gyroskooppi-ilmio-kasispinnerilla-ja-cd-levylla","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=66237&lang=fi","title":{"rendered":"Miksi py\u00f6riv\u00e4 kiekko ei kaadu? Koe gyroskooppi-ilmi\u00f6 k\u00e4sispinnerill\u00e4 ja CD-levyll\u00e4"},"content":{"rendered":"<p style=\"text-align: center;\"><span style=\"color: #339966;\"><strong>T\u00e4\u00e4ll\u00e4 kirjoittaa tiedevalmentaja Ken Kuwako. Jokainen p\u00e4iv\u00e4 on uusi koe.<\/strong><\/span><\/p>\n<p>L\u00f6ysin Daisosta s\u00f6p\u00f6n keltaisen fidget spinnerin. Varsinainen spinneri on kuitenkin ostettu sadan jenin Seria-myym\u00e4l\u00e4st\u00e4. Vaikka kyseess\u00e4 on edullinen lelu, se py\u00f6rii yll\u00e4tt\u00e4v\u00e4n hyvin.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-66226 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-06-5.09.12.jpeg\" alt=\"\" width=\"213\" height=\"308\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-06-5.09.12.jpeg 918w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-06-5.09.12-207x300.jpeg 207w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-06-5.09.12-707x1024.jpeg 707w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-06-5.09.12-768x1113.jpeg 768w\" sizes=\"auto, (max-width: 213px) 100vw, 213px\" \/><\/p>\n<p>Mutta t\u00e4m\u00e4 ei ole pelkk\u00e4 lelu, jota py\u00f6ritell\u00e4\u00e4n huvikseen. Kun sen liimaa CD-levyn keskelle tavallisella liimalla, siit\u00e4 syntyy hetkess\u00e4 kokeellinen v\u00e4line, jolla voi itse kokea yhden fysiikan kiehtovimmista ilmi\u00f6ist\u00e4.<\/p>\n<p>Etupuoli n\u00e4ytt\u00e4\u00e4 t\u00e4lt\u00e4.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-66190 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.07.54.jpeg\" alt=\"\" width=\"411\" height=\"392\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.07.54.jpeg 866w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.07.54-300x286.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.07.54-768x733.jpeg 768w\" sizes=\"auto, (max-width: 411px) 100vw, 411px\" \/><\/p>\n<p>Takapuoli n\u00e4ytt\u00e4\u00e4 t\u00e4lt\u00e4.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-66191\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.08.00.jpeg\" alt=\"\" width=\"404\" height=\"416\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.08.00.jpeg 770w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.08.00-292x300.jpeg 292w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.08.00-768x790.jpeg 768w\" sizes=\"auto, (max-width: 404px) 100vw, 404px\" \/><\/p>\n<p>T\u00f6rm\u00e4sin t\u00e4h\u00e4n ideaan NGK Science Site -sivustolla ja p\u00e4\u00e4tin rakentaa laitteen itse. Lopputulos oli paljon hauskempi kuin osasin odottaa, joten haluan jakaa sen my\u00f6s teille. T\u00e4m\u00e4n kokeen aiheena on gyroskooppinen ilmi\u00f6 \u2013 sama syy, jonka ansiosta hyrr\u00e4 tai polkupy\u00f6r\u00e4n rengas pysyy pystyss\u00e4 kaatumatta.<\/p>\n<h3>Py\u00f6rim\u00e4t\u00f6n CD kaatuu saman tien<\/h3>\n<p>Aloitetaan aivan perusteista. Yrit\u00e4 asettaa CD pystyyn p\u00f6yd\u00e4lle niin, ettei spinneri py\u00f6ri lainkaan. Lopputulos on juuri sellainen kuin odottaisi: levy kaatuu v\u00e4litt\u00f6m\u00e4sti. N\u00e4in huomaa hyvin, kuinka ep\u00e4vakaa pystyasennossa oleva ohut levy todellisuudessa on.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-66192\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.00.jpeg\" alt=\"\" width=\"391\" height=\"297\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.00.jpeg 848w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.00-300x228.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.00-768x583.jpeg 768w\" sizes=\"auto, (max-width: 391px) 100vw, 391px\" \/><\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-66193\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.09.jpeg\" alt=\"\" width=\"460\" height=\"413\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.09.jpeg 702w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.09-300x269.jpeg 300w\" sizes=\"auto, (max-width: 460px) 100vw, 460px\" \/><\/p>\n<h3>Kun spinneri py\u00f6rii, tapahtuu jotain yll\u00e4tt\u00e4v\u00e4\u00e4<\/h3>\n<p>Nyt alkaa varsinainen koe. Py\u00f6r\u00e4yt\u00e4 keskell\u00e4 oleva fidget spinneri vauhtiin ja aseta CD j\u00e4lleen pystyyn. T\u00e4ll\u00e4 kertaa lopputulos on aivan toisenlainen. Katso video.<\/p>\n<p><iframe loading=\"lazy\" title=\"\u56de\u8ee2\u3059\u308b\u5186\u76e4\u306f\u306a\u305c\u5012\u308c\u306a\u3044\u306e\u304b\uff1f100\u5747\u30b0\u30c3\u30ba\u3067\u4f53\u9a13\u3059\u308b\u30b8\u30e3\u30a4\u30ed\u52b9\u679c\uff08\u30cf\u30f3\u30c9\u30b9\u30d4\u30ca\u30fc\uff0bCD\u306e\u30b3\u30e9\u30dc\uff09\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/c5550kdh_Sk?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 style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-66194\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.17.jpeg\" alt=\"\" width=\"512\" height=\"474\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.17.jpeg 674w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.17-300x278.jpeg 300w\" sizes=\"auto, (max-width: 512px) 100vw, 512px\" \/><\/p>\n<p>CD ei kaadukaan. Se asetettiin t\u00e4sm\u00e4lleen samaan paikkaan kuin \u00e4sken, mutta lopputulos muuttui t\u00e4ysin.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-66195\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.25.jpeg\" alt=\"\" width=\"443\" height=\"409\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.25.jpeg 672w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.25-300x277.jpeg 300w\" sizes=\"auto, (max-width: 443px) 100vw, 443px\" \/><\/p>\n<p>Ja yll\u00e4tys ei lopu siihen. Levy jopa k\u00e4\u00e4ntyy sulavasti ymp\u00e4ri ja palaa takaisin. Liike n\u00e4ytt\u00e4\u00e4 melkein silt\u00e4 kuin sill\u00e4 olisi oma tahto.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-66196\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.34.jpeg\" alt=\"\" width=\"505\" height=\"371\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.34.jpeg 900w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.34-300x221.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.34-768x565.jpeg 768w\" sizes=\"auto, (max-width: 505px) 100vw, 505px\" \/><\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-66197\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.43.jpeg\" alt=\"\" width=\"524\" height=\"418\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.43.jpeg 848w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.43-300x239.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.43-768x612.jpeg 768w\" sizes=\"auto, (max-width: 524px) 100vw, 524px\" \/><\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-66198\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.50.jpeg\" alt=\"\" width=\"515\" height=\"502\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.50.jpeg 704w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.50-300x292.jpeg 300w\" sizes=\"auto, (max-width: 515px) 100vw, 515px\" \/><\/p>\n<h3>Miksi se ei kaadu? Vastaus l\u00f6ytyy gyroskooppisesta ilmi\u00f6st\u00e4<\/h3>\n<p>T\u00e4m\u00e4n oudon k\u00e4ytt\u00e4ytymisen taustalla on ilmi\u00f6, jota kutsutaan gyroskooppiseksi vaikutukseksi. Py\u00f6riv\u00e4ll\u00e4 kappaleella on luonnollinen taipumus s\u00e4ilytt\u00e4\u00e4 py\u00f6rimisakselinsa suunta mahdollisimman muuttumattomana. T\u00e4m\u00e4 perustuu fysiikan t\u00e4rke\u00e4\u00e4n peruslakiin, kulmaliikem\u00e4\u00e4r\u00e4n s\u00e4ilymiseen.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-66195 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.25.jpeg\" alt=\"\" width=\"443\" height=\"409\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.25.jpeg 672w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.25-300x277.jpeg 300w\" sizes=\"auto, (max-width: 443px) 100vw, 443px\" \/><\/p>\n<p>Kun CD ei py\u00f6ri, se on vain ohut levy, joka menett\u00e4\u00e4 helposti tasapainonsa. Pienikin kallistus riitt\u00e4\u00e4, ja painovoima kaataa sen. Heti kun levy alkaa py\u00f6ri\u00e4 suurella nopeudella, se vastustaa py\u00f6rimisakselinsa suunnan muuttumista. T\u00e4st\u00e4 syyst\u00e4 polkupy\u00f6r\u00e4ll\u00e4 on helpompi pysy\u00e4 pystyss\u00e4 vauhdissa, ja samasta syyst\u00e4 hyrr\u00e4 py\u00f6rii pitk\u00e4\u00e4n kaatumatta. Py\u00f6riv\u00e4 kappale k\u00e4ytt\u00e4ytyy aivan eri tavalla kuin paikallaan oleva.<\/p>\n<h3>Ent\u00e4 miksi se k\u00e4\u00e4ntyy takaisin? Kyse on prekessiosta<\/h3>\n<p>Viel\u00e4 kiinnostavampaa on se, ettei levy ainoastaan pysy pystyss\u00e4, vaan my\u00f6s k\u00e4\u00e4ntyy takaisin. T\u00e4t\u00e4 liikett\u00e4 kutsutaan prekessioksi. Kun py\u00f6riv\u00e4\u00e4n kappaleeseen kohdistuu ulkoinen voima \u2013 t\u00e4ss\u00e4 tapauksessa painovoima \u2013 sen py\u00f6rimisakseli ei kaadu suoraan, vaan alkaa hitaasti kiert\u00e4\u00e4 ympyr\u00e4\u00e4. Sama ilmi\u00f6 n\u00e4kyy my\u00f6s hyrr\u00e4ss\u00e4 juuri ennen kuin se pys\u00e4htyy: akseli alkaa huojuen kiert\u00e4\u00e4 ymp\u00e4ri.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-66197 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.43.jpeg\" alt=\"\" width=\"524\" height=\"418\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.43.jpeg 848w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.43-300x239.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.09.43-768x612.jpeg 768w\" sizes=\"auto, (max-width: 524px) 100vw, 524px\" \/><\/p>\n<h3>T\u00e4sm\u00e4lleen sama periaate saa my\u00f6s bumerangin palaamaan<\/h3>\n<p>Ehk\u00e4 mieleesi tuli jo jokin tuttu esine. Aivan oikein \u2013 bumerangi. T\u00e4m\u00e4 yksinkertainen koe havainnollistaa erinomaisesti, miksi bumerangi palaa takaisin heitt\u00e4j\u00e4lleen.<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"uja7gn7soe\"><p><a href=\"https:\/\/phys-edu.net\/wp\/?p=63518\">\u624b\u4f5c\u308a\u30d6\u30fc\u30e1\u30e9\u30f3\u3067\u5b9f\u9a13\uff01\u306a\u305c\u623b\u3063\u3066\u304f\u308b\u306e\uff1f\u56de\u8ee2\u306e\u79d1\u5b66\uff08\u63da\u529b\u30fb\u30b8\u30e3\u30a4\u30ed\u52b9\u679c\u30fb\u6b73\u5dee\u904b\u52d5\uff09<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"\u201c\u624b\u4f5c\u308a\u30d6\u30fc\u30e1\u30e9\u30f3\u3067\u5b9f\u9a13\uff01\u306a\u305c\u623b\u3063\u3066\u304f\u308b\u306e\uff1f\u56de\u8ee2\u306e\u79d1\u5b66\uff08\u63da\u529b\u30fb\u30b8\u30e3\u30a4\u30ed\u52b9\u679c\u30fb\u6b73\u5dee\u904b\u52d5\uff09\u201d \u2014 \u79d1\u5b66\u306e\u30cd\u30bf\u5e33\" src=\"https:\/\/phys-edu.net\/wp\/?p=63518&amp;embed=true#?secret=JFMTx1EBao#?secret=uja7gn7soe\" data-secret=\"uja7gn7soe\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<p>Kun bumerangi l\u00e4htee k\u00e4dest\u00e4, se alkaa py\u00f6ri\u00e4 nopeasti. Gyroskooppinen vaikutus pit\u00e4\u00e4 sen akselin vakaana, ja prekession ansiosta lentosuunta muuttuu v\u00e4hitellen. Lopulta bumerangi kaartaa takaisin heitt\u00e4j\u00e4n luo. Todellisessa bumerangissa mukana ovat my\u00f6s siipien synnytt\u00e4m\u00e4 noste, monimutkaisemmat prekessiovaikutukset sek\u00e4 kolmiulotteinen liike, joten t\u00e4m\u00e4 CD-koe ei j\u00e4ljittele sit\u00e4 t\u00e4ydellisesti. Silti se havainnollistaa eritt\u00e4in selke\u00e4sti kaikkein t\u00e4rkeimm\u00e4n ajatuksen: miksi py\u00f6riv\u00e4 kappale voi muuttaa rataansa ja palata takaisin.<\/p>\n<p>Muutaman sadan jenin tarvikkeilla voi tutustua samaan py\u00f6rimisen fysiikkaan, joka selitt\u00e4\u00e4 hyrrien, polkupy\u00f6rien, bumerangien ja jopa satelliittien asennonhallinnan toimintaa. On h\u00e4mm\u00e4stytt\u00e4v\u00e4\u00e4, kuinka syv\u00e4llist\u00e4 tiedett\u00e4 voi piill\u00e4 aivan arkisissa esineiss\u00e4. Kokeile t\u00e4t\u00e4 itse, jos sinulla on fidget spinneri \u2013 yll\u00e4tyt varmasti.<\/p>\n<h3>Yhteydenotot ja yhteisty\u00f6<\/h3>\n<p>Haluatko tuoda tieteen ihmeet l\u00e4hemm\u00e4s arkea? Sivustolta l\u00f6yd\u00e4t runsaasti hauskoja kotona teht\u00e4vi\u00e4 tiedekokeita sek\u00e4 selkeit\u00e4 vinkkej\u00e4 niiden toteuttamiseen. K\u00e4y tutkimassa lis\u00e4\u00e4!<\/p>\n<p>\u30fbTiedeblogin sis\u00e4ll\u00f6st\u00e4 on julkaistu my\u00f6s kirja. Lis\u00e4tietoja <a href=\"https:\/\/amzn.to\/42PMCEL\">t\u00e4\u00e4lt\u00e4<\/a><br \/>\n\u30fbLis\u00e4tietoja blogin yll\u00e4pit\u00e4j\u00e4st\u00e4 Ken Kuwakosta <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=37\">t\u00e4\u00e4lt\u00e4<\/a><br \/>\n\u30fbKirjoitus-, luento-, tiedety\u00f6paja-, TV-asiantuntija- ja muut yhteisty\u00f6pyynn\u00f6t <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">t\u00e4\u00e4lt\u00e4<\/a> <span class=\"s2\">\u30fbUusimmat artikkelit l\u00f6ytyv\u00e4t my\u00f6s <a href=\"https:\/\/x.com\/kuwako\">X:st\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\">Science Notes -YouTube-kanavalla<\/a> julkaistaan s\u00e4\u00e4nn\u00f6llisesti kokeisiin liittyvi\u00e4 videoita!<\/p>\n<h3><span style=\"color: #ff0000;\">NEW\u3000\u5206\u89e3\u554f\u984c\u96c6\u3000\u7406\u79d1<\/span><\/h3>\r\n<ul>\r\n \t<li>\uff17\u6708\uff12\uff11\u65e5\u767a\u58f2\uff01\u300e<a href=\"https:\/\/phys-edu.net\/wp\/?p=64462\">\u9ad8\u6821\u5165\u8a66 \u5206\u89e3\u554f\u984c\u96c6 \u7406\u79d1<\/a>\u300f\uff08\u5b66\u7814\uff09\u2026\u96e3\u3057\u3044\u554f\u984c\u3082\u5c0f\u3055\u306a\u554f\u984c\u306b\u5206\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u554f\u984c\u3092\u89e3\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305d\u3093\u306a\u5206\u89e3\u306e\u6280\u8853\u304c\u8eab\u306b\u3064\u304f\u3088\u3046\u306b\u6df1\u304f\u95a2\u308f\u308a\u3092\u6301\u3063\u3066\u4f5c\u308a\u307e\u3057\u305f\u3002\r\n<a href=\"https:\/\/phys-edu.net\/wp\/?p=64462\"><img class=\"alignnone  wp-image-65097 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-07-04-8.40.17.jpeg\" alt=\"\" width=\"172\" height=\"244\" \/><\/a><\/li>\r\n<\/ul>\r\n<h3>\uff17\u30fb\uff18\u6708\u306e\u30a4\u30c1\u30aa\u30b7\u5b9f\u9a13\uff01<\/h3>\r\n<p style=\"text-align: center;\">\u590f\u3067\u30d7\u30b7\u30e5\u30c3\u3068\u723d\u3084\u304b\u5b9f\u9a13\uff01<\/p>\r\n<img class=\"alignnone  wp-image-64964 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-30-4.31.58.jpeg\" alt=\"\" width=\"250\" height=\"310\" \/>\r\n<p style=\"text-align: center;\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=206\">\u5c0f\u578b\u3067\u6301\u3061\u5e30\u308c\u308b\u3088\uff01\u30da\u30c3\u30c8\u30dc\u30c8\u30eb\u30ed\u30b1\u30c3\u30c8\u3092\u4f5c\u308d\u3046\uff01<\/a><\/p>\r\n\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 \t<li>\uff17\u6708\uff13\uff10\u65e5\uff08\u6c34\uff09\u79d1\u5b66\u76e3\u4fee\u300c<a href=\"https:\/\/www.fujitv.co.jp\/onesongfes\/\">TIF presents ONE SONG FES<\/a>\u300d\uff08\u30d5\u30b8\u30c6\u30ec\u30d3\uff09\u00a026:15~27:15<\/li>\r\n \t<li>12\u670826\u65e5\uff08\u571f\uff09\u3000<a href=\"https:\/\/phys-edu.net\/wp\/?p=64825\">\u30ca\u30ea\u30ab\u30b5\u30a4\u30a8\u30f3\u30b9\u30a2\u30ab\u30c7\u30df\u30fc\uff08\u6559\u54e1\u5411\u3051\u5b9f\u9a13\u8b1b\u7fd2\u4f1a\uff09\u958b\u50ac<\/a><\/li>\r\n<\/ul>\r\n<h3><b>\u66f8\u7c4d<strong>\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/h3>\r\n<ul>\r\n \t<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\r\n<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\" \/><\/strong><\/li>\r\n \t<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\r\n<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;\">\u3010\u65e5\u672c\u8a9e\u3011<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>\u3000\u3010\u82f1\u8a9e\u3011<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><\/p>\r\n\r\n<h3 style=\"text-align: center;\"><strong>Explore<\/strong><\/h3>\r\n<ul>\r\n \t<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 \t<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 \t<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 \t<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 \t<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 \t<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 \t<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>","protected":false},"excerpt":{"rendered":"<p>T\u00e4\u00e4ll\u00e4 kirjoittaa tiedevalmentaja Ken Kuwako. Jokainen p\u00e4iv\u00e4 on uusi koe. L\u00f6ysin Daisosta s\u00f6p\u00f6n keltaisen fidg [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":66190,"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":"","jetpack_post_was_ever_published":false},"categories":[1630],"tags":[],"class_list":["post-66237","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\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-05-5.07.54.jpeg","jetpack-related-posts":[{"id":63806,"url":"https:\/\/phys-edu.net\/wp\/?p=63806&lang=fi","url_meta":{"origin":66237,"position":0},"title":"Py\u00f6rii ja lent\u00e4\u00e4 suoraan! Tutustu gyrovaikutuksen ihmeisiin X-Launcher 2:n avulla","author":"\u6851\u5b50 \u7814","date":"2026\u5e745\u670825\u65e5","format":false,"excerpt":"T\u00e4ss\u00e4 tiedevalmentaja Ken Kuwako. 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