{"id":64709,"date":"2026-06-21T04:50:52","date_gmt":"2026-06-20T19:50:52","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=64709"},"modified":"2026-06-21T04:50:52","modified_gmt":"2026-06-20T19:50:52","slug":"tee-se-itse-bumerangikoe-miksi-se-palaa-takaisin-pyorimisen-tiede-nostovoima-gyroskooppinen-ilmio-ja-prekessio","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=64709&lang=fi","title":{"rendered":"Tee-se-itse-bumerangikoe! Miksi se palaa takaisin? Py\u00f6rimisen tiede (nostovoima, gyroskooppinen ilmi\u00f6 ja prekessio)"},"content":{"rendered":"<p style=\"text-align: center;\"><span style=\"color: #339966;\"><b>T\u00e4ss\u00e4 puhuu Science Trainer Kuwako Ken. Jokainen p\u00e4iv\u00e4 on uusi koe.<\/b><\/span><\/p>\n<p style=\"text-align: center;\">&#8220;Miksi heitetty esine palaa takaisin luokseni?&#8221;<\/p>\n<p>T\u00e4m\u00e4 on kysymys, jonka l\u00e4hes jokainen pohtii n\u00e4hdess\u00e4\u00e4n bumerangin ensimm\u00e4ist\u00e4 kertaa. Sen taustalla piilee yll\u00e4tt\u00e4v\u00e4 yhdistelm\u00e4 fysiikkaa: lentokoneen siivet, hyrr\u00e4t ja py\u00f6rimisliikkeen salaisuudet. K\u00e4yd\u00e4\u00e4n ilmi\u00f6 askel askeleelta l\u00e4pi. Saatat huomata, ett\u00e4 monet arkiset asiat n\u00e4ytt\u00e4v\u00e4t t\u00e4m\u00e4n j\u00e4lkeen aivan uudenlaisilta.<\/p>\n<h3>Bumerangin poikkileikkaus muistuttaa lentokoneen siipe\u00e4<\/h3>\n<p>Ensimm\u00e4iseksi hankin t\u00e4llaisen sis\u00e4k\u00e4ytt\u00f6\u00f6n tarkoitetun bumerangin. Se on valmistettu pehme\u00e4st\u00e4 materiaalista, joten kasvoihin osuessaankaan se ei satu. Sen heitt\u00e4minen on helppoa, joten se sopii t\u00e4ydellisesti perusidean opetteluun.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-64673 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.50.25.jpeg\" alt=\"\" width=\"274\" height=\"318\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.50.25.jpeg 1066w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.50.25-259x300.jpeg 259w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.50.25-883x1024.jpeg 883w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.50.25-768x890.jpeg 768w\" sizes=\"auto, (max-width: 274px) 100vw, 274px\" \/> <\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/amzn.to\/4oFgb5C\">Room Boom<\/a><\/p>\n<p>T\u00e4m\u00e4n mallin pohjalta rakensin seuraavan bumerangin.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-64674\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.53.32.jpeg\" alt=\"\" width=\"406\" height=\"332\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.53.32.jpeg 826w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.53.32-300x246.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.53.32-768x629.jpeg 768w\" sizes=\"auto, (max-width: 406px) 100vw, 406px\" \/><\/p>\n<p>Pohjana k\u00e4ytin kirjan &#8220;<a href=\"https:\/\/amzn.to\/4vijfas\">Miksi bumerangi palaa takaisin?<\/a>&#8221; ohjeita, mutta tein siihen omia parannuksia.<\/p>\n<h3>Paperisen bumerangin valmistus<\/h3>\n<p>Ensimm\u00e4inen t\u00e4rke\u00e4 asia on k\u00e4ytt\u00e4\u00e4 riitt\u00e4v\u00e4n j\u00e4ykk\u00e4\u00e4 paperia. Tavallinen pahvi ei kuitenkaan toiminut kovin hyvin. Useiden kokeilujen j\u00e4lkeen p\u00e4\u00e4dyin k\u00e4ytt\u00e4m\u00e4\u00e4n seuraavaa kansipaperia, joka osoittautui erinomaiseksi.<\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/amzn.to\/4oC9dhQ\">Kokuyo Board Cover A4, 10 arkkia, Sei-830N<\/a><\/p>\n<p> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-64682 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.55.25.jpeg\" alt=\"\" width=\"250\" height=\"348\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.55.25.jpeg 842w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.55.25-215x300.jpeg 215w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.55.25-734x1024.jpeg 734w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.55.25-768x1071.jpeg 768w\" sizes=\"auto, (max-width: 250px) 100vw, 250px\" \/><\/p>\n<p>Leikkaa t\u00e4st\u00e4 paperista kappaleet seuraavilla mitoilla:<\/p>\n<p style=\"text-align: center;\">Pituus 13 cm<\/p>\n<p> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-64679 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.51.09.jpeg\" alt=\"\" width=\"355\" height=\"427\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.51.09.jpeg 670w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.51.09-249x300.jpeg 249w\" sizes=\"auto, (max-width: 355px) 100vw, 355px\" \/> <\/p>\n<p style=\"text-align: center;\">Leveys 3 cm<\/p>\n<p> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-64680 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.51.14.jpeg\" alt=\"\" width=\"304\" height=\"158\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.51.14.jpeg 806w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.51.14-300x156.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.51.14-768x398.jpeg 768w\" sizes=\"auto, (max-width: 304px) 100vw, 304px\" \/> <\/p>\n<p style=\"text-align: center;\">Viilto 1,5 cm<\/p>\n<p> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-64681 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.51.19.jpeg\" alt=\"\" width=\"372\" height=\"279\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.51.19.jpeg 1182w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.51.19-300x225.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.51.19-1024x768.jpeg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.51.19-768x576.jpeg 768w\" sizes=\"auto, (max-width: 372px) 100vw, 372px\" \/><\/p>\n<p>Valmista kolme samanlaista osaa.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-64675 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.50.32.jpeg\" alt=\"\" width=\"409\" height=\"357\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.50.32.jpeg 888w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.50.32-300x262.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.50.32-768x671.jpeg 768w\" sizes=\"auto, (max-width: 409px) 100vw, 409px\" \/><\/p>\n<p>Yhdist\u00e4 kolme osaa toisiinsa viiltojen avulla.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-64676 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.50.37.jpeg\" alt=\"\" width=\"357\" height=\"357\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.50.37.jpeg 1176w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.50.37-300x300.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.50.37-1024x1022.jpeg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.50.37-150x150.jpeg 150w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.50.37-768x767.jpeg 768w\" sizes=\"auto, (max-width: 357px) 100vw, 357px\" \/><\/p>\n<p>S\u00e4\u00e4d\u00e4 siivet niin, ett\u00e4 niiden v\u00e4linen kulma on noin 120 astetta. Kiinnit\u00e4 keskiosa kolmesta kohdasta nitojalla.<\/p>\n<p>Lis\u00e4\u00e4 sitten paperiliittimet siipien k\u00e4rkiin kasvattaaksesi py\u00f6rimisen vakautta (eli kasvattaaksesi hitausmomenttia).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-64677 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.50.47.jpeg\" alt=\"\" width=\"538\" height=\"360\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.50.47.jpeg 1972w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.50.47-300x201.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.50.47-1024x685.jpeg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.50.47-768x514.jpeg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.50.47-1536x1028.jpeg 1536w\" sizes=\"auto, (max-width: 538px) 100vw, 538px\" \/><\/p>\n<p>Kierr\u00e4 liittimien ymp\u00e4rille teippi\u00e4, jotta ne eiv\u00e4t irtoa.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-64678 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.51.02.jpeg\" alt=\"\" width=\"460\" height=\"364\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.51.02.jpeg 1344w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.51.02-300x238.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.51.02-1024x811.jpeg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.51.02-768x608.jpeg 768w\" sizes=\"auto, (max-width: 460px) 100vw, 460px\" \/><\/p>\n<p>Perusrakenne on nyt valmis. Seuraava vaihe on eritt\u00e4in t\u00e4rke\u00e4: s\u00e4\u00e4t\u00f6.<\/p>\n<p>Katso bumerangia sivusta ja v\u00e4\u00e4nn\u00e4 siipi\u00e4 hieman niin, ett\u00e4 oikea reuna kohoaa hieman yl\u00f6sp\u00e4in.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-63549 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-19-4.13.10.jpeg\" alt=\"\" width=\"629\" height=\"235\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-19-4.13.10.jpeg 952w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-19-4.13.10-300x112.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-19-4.13.10-768x287.jpeg 768w\" sizes=\"auto, (max-width: 629px) 100vw, 629px\" \/><\/p>\n<p>Muotoile sen j\u00e4lkeen koko bumerangi loivasti kulhon muotoiseksi.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-63550 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-19-4.13.17.jpeg\" alt=\"\" width=\"613\" height=\"275\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-19-4.13.17.jpeg 1052w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-19-4.13.17-300x135.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-19-4.13.17-1024x459.jpeg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-19-4.13.17-768x345.jpeg 768w\" sizes=\"auto, (max-width: 613px) 100vw, 613px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-64683 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.51.43.jpeg\" alt=\"\" width=\"420\" height=\"466\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.51.43.jpeg 764w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.51.43-270x300.jpeg 270w\" sizes=\"auto, (max-width: 420px) 100vw, 420px\" \/><\/p>\n<p>Koska t\u00e4m\u00e4 vaihe voi olla vaikea hahmottaa pelkkien kuvien perusteella, tein siit\u00e4 videon.<\/p>\n<p><iframe loading=\"lazy\" title=\"\u624b\u4f5c\u308a\u30d6\u30fc\u30e1\u30e9\u30f3\u306f\u306a\u305c\u623b\u3063\u3066\u304f\u308b\u306e\u304b\uff1f\u56de\u8ee2\u306e\u79d1\u5b66\uff08\u6b73\u5dee\u904b\u52d5\u30fb\u30b8\u30e3\u30a4\u30ed\uff09\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/IkEnyB-nbeo?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<h3>Heittotapa<\/h3>\n<p>Heittotekniikka esitell\u00e4\u00e4n my\u00f6s yll\u00e4 olevalla videolla. Tartu siiven k\u00e4rkeen, pid\u00e4 bumerangi l\u00e4hes pystyasennossa ja keskity ennen kaikkea py\u00f6rimisliikkeen tuottamiseen. \u00c4l\u00e4 ajattele niink\u00e4\u00e4n eteenp\u00e4in ty\u00f6nt\u00e4mist\u00e4.<\/p>\n<p>Anna ranteelle napakka napsautus, jotta bumerangi saa mahdollisimman paljon kierroksia.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-64684 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.52.07.jpeg\" alt=\"\" width=\"435\" height=\"401\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.52.07.jpeg 776w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.52.07-300x276.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.52.07-768x707.jpeg 768w\" sizes=\"auto, (max-width: 435px) 100vw, 435px\" \/><\/p>\n<p>Kun py\u00f6ritys onnistuu hyvin, bumerangi palaa takaisin luoksesi.<\/p>\n<p>Alla n\u00e4kyy Daisossa myyt\u00e4v\u00e4 kaupallinen bumerangi. Kun sit\u00e4 verrataan juuri rakennettuun paperiversioon, huomaa helposti, ett\u00e4 perusmuoto on hyvin samanlainen.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-64082\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-02-4.37.57.jpeg\" alt=\"\" width=\"456\" height=\"496\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-02-4.37.57.jpeg 1000w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-02-4.37.57-276x300.jpeg 276w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-02-4.37.57-941x1024.jpeg 941w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-02-4.37.57-768x836.jpeg 768w\" sizes=\"auto, (max-width: 456px) 100vw, 456px\" \/><\/p>\n<p>Siivet muistuttavat lentokoneen siipi\u00e4, ja niiden oikea yl\u00e4reuna on hieman koholla.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-64083\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-02-4.38.07.jpeg\" alt=\"\" width=\"456\" height=\"216\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-02-4.38.07.jpeg 966w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-02-4.38.07-300x142.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-02-4.38.07-768x364.jpeg 768w\" sizes=\"auto, (max-width: 456px) 100vw, 456px\" \/><\/p>\n<p>Sivulta katsottuna koko rakenne muistuttaa kulhoa.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-64084\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-02-4.38.12.jpeg\" alt=\"\" width=\"459\" height=\"1044\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-02-4.38.12.jpeg 652w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-02-4.38.12-132x300.jpeg 132w\" sizes=\"auto, (max-width: 459px) 100vw, 459px\" \/><\/p>\n<p>Daison bumerangin mukana tulee my\u00f6s QR-koodi, jonka kautta voi katsoa heitto-ohjeet sis\u00e4lt\u00e4v\u00e4n videon. Eritt\u00e4in k\u00e4tev\u00e4\u00e4.<\/p>\n<p><a href=\"https:\/\/youtu.be\/Xc7-_M7GSmQ\">Video<\/a><\/p>\n<p><iframe loading=\"lazy\" title=\"\u30d6\u30fc\u30e1\u30e9\u30f3\u306f\u306a\u305c\u623b\u3063\u3066\u304f\u308b\u306e\u304b\uff1f\uff08\u56de\u8ee2\u306e\u79d1\u5b66\uff09\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/ReiHAvGZmGI?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>Mutta miksi juuri t\u00e4llainen muoto saa bumerangin palaamaan takaisin?<\/p>\n<h3>Miksi bumerangi palaa takaisin?<\/h3>\n<p>Kun ilma virtaa eri nopeuksilla siiven ymp\u00e4rill\u00e4, syntyy nostovoima eli voima, joka pyrkii nostamaan kappaletta yl\u00f6sp\u00e4in. Lentokoneet pysyv\u00e4t ilmassa juuri t\u00e4m\u00e4n ilmi\u00f6n ansiosta.<\/p>\n<p>Toinen ratkaisevan t\u00e4rke\u00e4 tekij\u00e4 on prekessio eli py\u00f6rivien kappaleiden erityinen k\u00e4ytt\u00e4ytyminen. Se liittyy l\u00e4heisesti gyroskooppiseen vaikutukseen.<\/p>\n<p>Bumerangi liikkuu eteenp\u00e4in samalla kun se py\u00f6rii nopeasti. Hitausmomentin ansiosta py\u00f6riv\u00e4 kappale pyrkii jatkamaan py\u00f6rimist\u00e4\u00e4n. Sen py\u00f6rimisakseli pysyy vakaana eik\u00e4 helposti heilahtele. T\u00e4t\u00e4 kutsutaan gyroskooppiseksi vaikutukseksi.<\/p>\n<p>T\u00e4ll\u00f6in yl\u00e4puolella oleva siipi liikkuu samaan suuntaan kuin bumerangin eteneminen, joten sen nopeus suhteessa ilmaan on suurempi. Alapuolella oleva siipi puolestaan liikkuu osittain vastakkaiseen suuntaan, joten sen nopeus suhteessa ilmaan on pienempi.<\/p>\n<p>Koska nostovoima kasvaa nopeuden mukana, yl\u00e4puolella syntyy enemm\u00e4n nostetta kuin alapuolella. T\u00e4m\u00e4 ep\u00e4tasapaino synnytt\u00e4\u00e4 v\u00e4\u00e4nt\u00f6momentin, joka yritt\u00e4\u00e4 kallistaa bumerangia.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-63523 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-18-5.14.00.jpeg\" alt=\"\" width=\"417\" height=\"681\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-18-5.14.00.jpeg 786w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-18-5.14.00-184x300.jpeg 184w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-18-5.14.00-627x1024.jpeg 627w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-18-5.14.00-768x1255.jpeg 768w\" sizes=\"auto, (max-width: 417px) 100vw, 417px\" \/><\/p>\n<p>Py\u00f6riv\u00e4 kappale ei kuitenkaan reagoi t\u00e4h\u00e4n voimaan intuitiivisesti. Sen sijaan py\u00f6rimisakseli alkaa k\u00e4\u00e4nty\u00e4 toiseen suuntaan. T\u00e4t\u00e4 ilmi\u00f6t\u00e4 kutsutaan prekessioksi.<\/p>\n<p>Seuraava koe havainnollistaa ilmi\u00f6t\u00e4 hyvin.<\/p>\n<p><iframe loading=\"lazy\" title=\"C15-2634\u3000\u56de\u8ee2\u53f0\uff08\u30b8\u30e3\u30a4\u30ed\u30db\u30a4\u30fc\u30eb\uff09R-370N\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/I1eFEllD2JU?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>Moni kuvittelee, ett\u00e4 jos py\u00f6riv\u00e4\u00e4 kappaletta ty\u00f6nnet\u00e4\u00e4n yhteen suuntaan, se kallistuu siihen suuntaan. Nopeasti py\u00f6riv\u00e4 bumerangi toimii kuitenkin toisin: se reagoi voimaan noin kohtisuorassa suunnassa. Juuri t\u00e4m\u00e4 tekee prekessiosta niin kiehtovan ilmi\u00f6n.<\/p>\n<p>T\u00e4m\u00e4 on koko bumerangin paluumatkan salaisuus.<\/p>\n<p>Katso viel\u00e4 seuraavaa kuvaa. Kun bumerangi heitet\u00e4\u00e4n pystyasennossa, se kaartaa takaisin py\u00f6rien samalla koko ajan.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-64087\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-02-4.44.35.jpeg\" alt=\"\" width=\"419\" height=\"409\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-02-4.44.35.jpeg 818w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-02-4.44.35-300x293.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-02-4.44.35-768x749.jpeg 768w\" sizes=\"auto, (max-width: 419px) 100vw, 419px\" \/><\/p>\n<p> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-64088 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-02-4.44.46.jpeg\" alt=\"\" width=\"247\" height=\"127\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-02-4.44.46.jpeg 436w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-02-4.44.46-300x154.jpeg 300w\" sizes=\"auto, (max-width: 247px) 100vw, 247px\" \/><\/p>\n<p>Prekessiosta puhuttaessa tunnetuin esimerkki on hyrr\u00e4. My\u00f6s t\u00e4m\u00e4 Earth Top -video havainnollistaa ilmi\u00f6t\u00e4 hyvin.<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"OMNzYkeCBp\"><p><a href=\"https:\/\/phys-edu.net\/wp\/?p=63986\">\u30b3\u30de\u304c\u5012\u308c\u306a\u3044\u7406\u7531\u306f\u5b87\u5b99\u3068\u540c\u3058\u3060\u3063\u305f\uff01\u5730\u7403\u3054\u307e\u3067\u5b66\u3076\u6b73\u5dee\u904b\u52d5\u306e\u4e0d\u601d\u8b70<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"\u201c\u30b3\u30de\u304c\u5012\u308c\u306a\u3044\u7406\u7531\u306f\u5b87\u5b99\u3068\u540c\u3058\u3060\u3063\u305f\uff01\u5730\u7403\u3054\u307e\u3067\u5b66\u3076\u6b73\u5dee\u904b\u52d5\u306e\u4e0d\u601d\u8b70\u201d \u2014 \u79d1\u5b66\u306e\u30cd\u30bf\u5e33\" src=\"https:\/\/phys-edu.net\/wp\/?p=63986&amp;embed=true#?secret=8P6Oq3Ik9U#?secret=OMNzYkeCBp\" data-secret=\"OMNzYkeCBp\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<p>Paluuvaiheessa bumerangi muuttuu v\u00e4hitellen l\u00e4hes vaakasuoraksi ja n\u00e4ytt\u00e4\u00e4 leijuvan ilmassa.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-64090 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-02-4.45.06.jpeg\" alt=\"\" width=\"578\" height=\"348\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-02-4.45.06.jpeg 990w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-02-4.45.06-300x181.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-02-4.45.06-768x462.jpeg 768w\" sizes=\"auto, (max-width: 578px) 100vw, 578px\" \/><\/p>\n<p>T\u00e4m\u00e4kin voidaan selitt\u00e4\u00e4 prekessiolla. Lennon aikana etu- ja takaosan siipien nostovoimissa syntyy eroja, jotka aiheuttavat uuden prekessiovaikutuksen. Se kallistaa py\u00f6rimistasoa v\u00e4hitellen vaakasuoremmaksi, mink\u00e4 vuoksi palaava bumerangi n\u00e4ytt\u00e4\u00e4 lopuksi l\u00e4hes leijuvan.<\/p>\n<p>Vaikka bumerangin rata n\u00e4ytt\u00e4\u00e4 ensi silm\u00e4yksell\u00e4 ympyr\u00e4lt\u00e4, se ei ole ideaalinen ympyr\u00e4rata. Prekession vuoksi py\u00f6rimisakselin suunta muuttuu jatkuvasti, ja samalla my\u00f6s nostovoiman suunta muuttuu koko ajan.<\/p>\n<p>Kun bumerangin lentorataa tarkastelee tarkasti, huomaa sen muistuttavan enemm\u00e4n sis\u00e4\u00e4np\u00e4in kiertyv\u00e4\u00e4 spiraalia kuin t\u00e4ydellist\u00e4 ympyr\u00e4\u00e4. T\u00e4m\u00e4 johtuu siit\u00e4, ett\u00e4 prekession edetess\u00e4 radan kaarevuus muuttuu jatkuvasti.<\/p>\n<h3>Kulhon muotoinen bumerangi tekee k\u00e4\u00e4nn\u00f6ksest\u00e4 tiukemman<\/h3>\n<p>Kun bumerangia katsotaan ylh\u00e4\u00e4lt\u00e4 p\u00e4in, sen ei kannata olla t\u00e4ysin tasainen. Parempi muoto on sellainen, jossa keskiosa on hieman korkeammalla ja siipien p\u00e4\u00e4t hieman alempana \u2013 kuin loiva kulho.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-63550 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-19-4.13.17.jpeg\" alt=\"\" width=\"613\" height=\"275\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-19-4.13.17.jpeg 1052w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-19-4.13.17-300x135.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-19-4.13.17-1024x459.jpeg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-19-4.13.17-768x345.jpeg 768w\" sizes=\"auto, (max-width: 613px) 100vw, 613px\" \/><\/p>\n<p>T\u00e4lle on selke\u00e4 syy. Tasaisessa bumerangissa nostovoima vaikuttaa l\u00e4hes kohtisuoraan py\u00f6rimistasoon n\u00e4hden. Kun rakenne taivutetaan kulhon muotoiseksi, osa nostovoimasta suuntautuu kohti keskustaa.<\/p>\n<p>T\u00e4m\u00e4n seurauksena radan kaareutumiseen tarvittava keskeisvoima kasvaa ja k\u00e4\u00e4nn\u00f6ksen s\u00e4de pienenee. Tilannetta voi verrata polkupy\u00f6r\u00e4ilij\u00e4\u00e4n, joka kallistuu sis\u00e4kaarteeseen saadakseen tehty\u00e4 tiukemman mutkan.<\/p>\n<p>Pieni kaarevuus voi siis vaikuttaa lentorataan yll\u00e4tt\u00e4v\u00e4n paljon.<\/p>\n<h3>Se palasi takaisin jopa painottomassa avaruudessa!<\/h3>\n<p>Yll\u00e4tt\u00e4v\u00e4\u00e4 kyll\u00e4, maaliskuussa 2008 astronautti Takao Doi heitti paperisen bumerangin Kansainv\u00e4lisen avaruusaseman sis\u00e4ll\u00e4. Kokeessa havaittiin, ett\u00e4 bumerangi palasi heitt\u00e4j\u00e4n luo l\u00e4hes samalla tavalla kuin Maassa.<\/p>\n<p>T\u00e4m\u00e4 oli eritt\u00e4in merkitt\u00e4v\u00e4 havainto.<\/p>\n<blockquote><p> Takao Doi (53), joka oleskeli Kansainv\u00e4lisell\u00e4 avaruusasemalla (ISS), suoritti ep\u00e4virallisen kokeen heitt\u00e4m\u00e4ll\u00e4 bumerangia asemalla. Vaikka ISS:n sis\u00e4ll\u00e4 on maanp\u00e4\u00e4llist\u00e4 vastaava ilmanpaine, ymp\u00e4rist\u00f6 on painoton. Japanin avaruusj\u00e4rjest\u00f6 JAXAn mukaan pystysuoraan heitetty bumerangi palasi normaalisti takaisin. <\/p>\n<p id=\"cap\">L\u00e4hde: Bumerangi palasi takaisin my\u00f6s avaruudessa (Asahi Shimbun)<\/p>\n<p> <a href=\"http:\/\/www.asahi.com\/special\/space\/kibou\/OSK200803200044.html\">http:\/\/www.asahi.com\/special\/space\/kibou\/OSK200803200044.html<\/a> <\/p><\/blockquote>\n<p>Koska bumerangi toimii my\u00f6s painottomuudessa, voidaan p\u00e4\u00e4tell\u00e4, ett\u00e4 sen paluumekanismin ydin ei ole painovoima. Ratkaisevia tekij\u00f6it\u00e4 ovat nostovoima ja gyroskooppinen vaikutus.<\/p>\n<p>Lentokoneen siipien aerodynamiikka ja hyrr\u00e4n gyroskooppinen k\u00e4ytt\u00e4ytyminen n\u00e4ytt\u00e4v\u00e4t ensi silm\u00e4yksell\u00e4 t\u00e4ysin erilaisilta fysiikan ilmi\u00f6ilt\u00e4. Bumerangissa ne kuitenkin yhdistyv\u00e4t h\u00e4mm\u00e4stytt\u00e4v\u00e4n elegantilla tavalla.<\/p>\n<p>Jos rakennat oman bumerangin esimerkiksi tiedekerhossa, kokeile muuttaa heittokulmaa tai py\u00f6rimisnopeutta ja tarkkaile, miten lentorata muuttuu. Saatat tehd\u00e4 omia l\u00f6yt\u00f6j\u00e4si.<\/p>\n<h3>L\u00e4hteet<\/h3>\n<p><a href=\"https:\/\/ja.wikipedia.org\/wiki\/\u30d6\u30fc\u30e1\u30e9\u30f3\">Wikipedia: Boomerang<\/a><\/p>\n<p>\u2192 Sis\u00e4lt\u00e4\u00e4 yksityiskohtaisia selityksi\u00e4 siiven nostovoimasta sek\u00e4 prekession aiheuttamasta kaartumisesta. Lis\u00e4ksi l\u00e4hdeluettelo on eritt\u00e4in kattava.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-63558 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-19-4.56.21.jpeg\" alt=\"\" width=\"195\" height=\"276\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-19-4.56.21.jpeg 564w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-19-4.56.21-212x300.jpeg 212w\" sizes=\"auto, (max-width: 195px) 100vw, 195px\" \/> <\/p>\n<p style=\"text-align: center;\">Kirja: <a href=\"https:\/\/amzn.to\/4wDxpUA\">Miksi bumerangi palaa takaisin?<\/a><\/p>\n<h3>Aiheeseen liittyvi\u00e4 artikkeleita<\/h3>\n<p>Ilmatykin py\u00f6rrekeh\u00e4<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"H0qqayk3Da\"><p><a href=\"https:\/\/phys-edu.net\/wp\/?p=45044\">\u7159\u304c\u5b99\u3092\u821e\u3046\uff01\u30d5\u30a9\u30b0\u30de\u30b7\u30f3\u3067\u89e3\u304d\u660e\u304b\u3059\u300c\u898b\u3048\u308b\u7a7a\u6c17\u7832\u300d\u306e\u79d1\u5b66\uff08\u56de\u8ee2\u306e\u79d1\u5b66\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\u7159\u304c\u5b99\u3092\u821e\u3046\uff01\u30d5\u30a9\u30b0\u30de\u30b7\u30f3\u3067\u89e3\u304d\u660e\u304b\u3059\u300c\u898b\u3048\u308b\u7a7a\u6c17\u7832\u300d\u306e\u79d1\u5b66\uff08\u56de\u8ee2\u306e\u79d1\u5b66\uff09\u201d \u2014 \u79d1\u5b66\u306e\u30cd\u30bf\u5e33\" src=\"https:\/\/phys-edu.net\/wp\/?p=45044&amp;embed=true#?secret=Mjm2D7EluN#?secret=H0qqayk3Da\" data-secret=\"H0qqayk3Da\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<h3>Yhteydenotot ja yhteisty\u00f6<\/h3>\n<p>Tieteen ihmeet l\u00e4hemm\u00e4ksi arkea! Sivustolta l\u00f6yd\u00e4t hauskoja kotikokeita sek\u00e4 helposti ymm\u00e4rrett\u00e4vi\u00e4 selityksi\u00e4 niiden taustalla olevaan fysiikkaan. Tutustu rohkeasti muihinkin artikkeleihin!<\/p>\n<p>\u30fbTiedevinkkikirjasta on julkaistu my\u00f6s kirja. Lis\u00e4tietoja <a href=\"https:\/\/amzn.to\/42PMCEL\">t\u00e4\u00e4lt\u00e4<\/a><br \/>\n\u30fbLis\u00e4tietoja yll\u00e4pit\u00e4j\u00e4st\u00e4 Kuwako Kenist\u00e4 <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=37\">t\u00e4\u00e4lt\u00e4<\/a><br \/>\n\u30fbKirjoitus-, luento-, tiedekerho-, TV-asiantuntija- ja muut yhteisty\u00f6pyynn\u00f6t <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">t\u00e4\u00e4lt\u00e4<\/a><br \/>\n<span class=\"s2\">\u30fbArtikkelien p\u00e4ivitykset l\u00f6ytyv\u00e4t my\u00f6s <a href=\"https:\/\/x.com\/kuwako\">X-palvelusta<\/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 Idea Channel<\/a> julkaisee jatkuvasti uusia kokeiluvideoita!<\/p>\n<h3>\uff16\u6708\u306e\u30a4\u30c1\u30aa\u30b7\u5b9f\u9a13\uff01<\/h3>\r\n<p style=\"text-align: center;\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=64043\">\u30ec\u30e2\u30f3\u3084\u30aa\u30ec\u30f3\u30b8\u3067\u98a8\u8239\u3092\u5272\u308d\u3046\uff01\u30a4\u30f3\u30d1\u30af\u30c8\u304c\u629c\u7fa4\u306e\u30ea\u30e2\u30cd\u30f3\u98a8\u8239\u306e\u5b9f\u9a13<\/a><\/p>\r\n<p style=\"text-align: center;\"><img class=\"alignnone  wp-image-64045\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-01-4.45.24.jpeg\" alt=\"\" width=\"406\" height=\"349\" \/><\/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>\uff16\u6708\uff13\u65e5\uff08\u6c34\uff0920:30\u301c\u3000\u300c<a href=\"https:\/\/phys-edu.net\/wp\/?p=63950\"><wbr \/>\u30d0\u30ab\u30ea\u30ba\u30e0\u306e\u3061\u3087\u3063\u3068\u30d0\u30ab\u308a\u30cf\u30ab\u3063\u3066\u307f\u305f\uff01<\/a>\u300d\uff08\u30c6\u30ec\u30d3\u6771\u4eac\uff09\u3092\u79d1\u5b66\u76e3\u4fee\u30fb\u51fa\u6f14\u3057\u307e\u3059\u3002\u30c6\u30fc\u30de\u306f\u300c<wbr \/>\u305d\u3070\u306e\u51fa\u524d\u306f\u4f55\u4eba\u524d\u307e\u3067\u904b\u3079\u308b\u306e\u304b\u3001\u9650\u754c\u3092\u6e2c\u3063\u3066\u307f\u305f\u300d\u3067\u3059\u3002\u3000<\/li>\r\n<li>\uff16\u6708\uff14\u65e5(\u6728)\u30007:00\u301c\u3000\u300c<a href=\"https:\/\/www.ntv.co.jp\/toppa\/\">THE\u7a81\u7834\u30d5\u30a1\u30a4\u30eb<\/a>\u300d\uff08\u65e5\u672c\u30c6\u30ec\u30d3\uff09\u306b\u3064\u3044\u3066\u79d1\u5b66\u76e3\u4fee\u3057\u307e\u3057\u305f\u3002<\/li>\r\n<li>6\u670814\u65e5\uff08\u65e5\uff09\u3000<a href=\"https:\/\/phys-edu.net\/wp\/?p=63530\">\u5343\u8449\u5927\u5b66\u30a4\u30f3\u30b9\u30bf\u30ec\u30fc\u30b7\u30e7\u30f3\u300c\u63a2\u7a76\u300d<\/a>\u306b\u3066\u8b1b\u5e2b\u3092\u52d9\u3081\u307e\u3059<\/li>\r\n<li>6\u670826\u65e5\uff08\u91d1\uff09\u3000<a href=\"https:\/\/phys-edu.net\/wp\/?p=63067\">\u516c\u958b\u7814\u7a76\u4f1a\u300c\u8131\u4f5c\u696d\u5316\uff01\u30c7\u30b8\u30bf\u30eb\u5316\u3068\u6bb5\u968e\u7684\u6307\u5c0e\u3067\u5b9f\u73fe\u3059\u308b \u30aa\u30fc\u30e0\u306e\u6cd5\u5247\u306e\u63a2\u7a76\u300d<\/a><\/li>\r\n<li>\uff16\u670828\u65e5\uff08\u65e5\uff09\u3000<a href=\"https:\/\/www.davincimasters.jp\">\u30c0\u30d3\u30f3\u30c1\u30de\u30b9\u30bf\u30fc\u30ba\uff20\u662d\u548c\u5973\u5b50<\/a><\/li>\r\n<li>7\u670818\u65e5\uff08\u571f\uff09\u3000<a href=\"https:\/\/phys-edu.net\/wp\/?p=60018\">\u6559\u54e1\u5411\u3051\u5b9f\u9a13\u8b1b\u7fd2\u4f1a\u300c\u30ca\u30ea\u30ab\u30ab\u30b5\u30a4\u30a8\u30f3\u30b9\u30a2\u30ab\u30c7\u30df\u30fc\u300d\u306e\u8b1b\u5e2b\u3092\u3057\u307e\u3059<\/a>\u3002\u304a\u4f1a\u3044\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\r\n<\/ul>\r\n<h3><b>\u66f8\u7c4d<strong>\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/h3>\r\n<ul>\r\n<li>\u300e\u5927\u4eba\u306e\u305f\u3081\u306e\u9ad8\u6821\u7269\u7406\u5fa9\u7fd2\u5e33\u300f\uff08\u8b1b\u8ac7\u793e\uff09\u2026\u4e00\u822c\u5411\u3051\u306b\u65e5\u5e38\u306e\u7269\u7406\u306b\u3064\u3044\u3066\u516c\u5f0f\u3092\u5143\u306b\u7d10\u89e3\u304d\u307e\u3057\u305f\u3002<a href=\"https:\/\/phys-edu.net\/wp\/?p=1827\">\u7279\u8a2d\u30b5\u30a4\u30c8<\/a>\u3067\u306f\u5b9f\u9a13\u3092\u591a\u6570\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<strong>\u203b\u5897\u5237\u304c\u304b\u304b\u308a\uff16\u5237\u3068\u306a\u308a\u307e\u3057\u305f\uff082026\/02\/01\uff09<br \/><img class=\"alignnone wp-image-10940 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0-300x262.jpg\" sizes=\"(max-width: 220px) 100vw, 220px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0-300x262.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0.jpg 311w\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2014-07-05 0.43.51\" width=\"220\" height=\"192\" \/><br \/><\/strong><\/li>\r\n<li>\u300e\u304d\u3081\u308b!\u5171\u901a\u30c6\u30b9\u30c8 \u7269\u7406\u57fa\u790e \u6539\u8a02\u7248\u300f\uff08\u5b66\u7814\uff09\u2026\u3000\u9ad8\u6821\u7269\u7406\u306e\u53c2\u8003\u66f8\u3067\u3059\u3002\u30a4\u30e9\u30b9\u30c8\u3092\u591a\u304f\u3057\u3066\u30a4\u30e1\u30fc\u30b8\u304c\u6301\u3066\u308b\u3088\u3046\u306b\u63cf\u304d\u307e\u3057\u305f\u3002\u6388\u696d\u306b\u3064\u3044\u3066\u3044\u3051\u306a\u3044\u3001\u7269\u7406\u304c\u82e6\u624b\u3001\u305d\u3093\u306a\u751f\u5f92\u306b\u304a\u3059\u3059\u3081\u3067\u3059\u3002<a href=\"https:\/\/phys-edu.net\/wp\/?p=45322\">\u7279\u8a2d\u30b5\u30a4\u30c8<\/a>\u306f\u3053\u3061\u3089\u3002<br \/><img class=\"alignnone wp-image-45718 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c.jpg\" sizes=\"(max-width: 184px) 100vw, 184px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c.jpg 756w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c-300x269.jpg 300w\" alt=\"\" width=\"184\" height=\"165\" \/><\/li>\r\n<\/ul>\r\n<h3><span style=\"text-align: center;\">\u5404\u7a2eSNS\uff08\u66f4\u65b0\u60c5\u5831\u3092\u304a\u5c4a\u3051\uff01\uff09<\/span><\/h3>\r\n<p style=\"text-align: center;\"><a style=\"text-align: center;\" href=\"https:\/\/twitter.com\/kuwako\">X(Twitter)<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.instagram.com\/science_seeds\/\">instagram<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.facebook.com\/kuwakolab\/\">Facebook<\/a>\uff08\u65e5\u672c\u8a9e\uff09<\/p>\r\n<p style=\"text-align: center;\"><a style=\"text-align: center;\" href=\"https:\/\/bsky.app\/profile\/kagakunoneta.bsky.social\">BlueSky<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.threads.net\/@science_seeds?hl=ja\">Threads<\/a>\uff08\u82f1\u8a9e\uff09<\/p>\r\n<h3 style=\"text-align: center;\"><strong>Explore<\/strong><\/h3>\r\n<ul>\r\n<li><a href=\"https:\/\/phys-edu.net\/wp\/?page_id=30764\">\u697d\u3057\u3044\u5b9f\u9a13<\/a>\u2026\u304a\u5b50\u3055\u3093\u3068\u4e00\u7dd2\u306b\u5922\u4e2d\u306b\u306a\u308c\u308b\u30a4\u30c1\u30aa\u30b7\u306e\u79d1\u5b66\u5b9f\u9a13\u3092\u591a\u6570\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u9ad8\u6821\u7269\u7406\u306e\u7406\u89e3\u3092\u6df1\u3081\u308b\u305f\u3081\u306e\u52d5\u753b\u6559\u6750\u3082\u7528\u610f\u3057\u307e\u3057\u305f\u3002<\/li>\r\n<li><a href=\"https:\/\/phys-edu.net\/wp\/?page_id=798\">\u7406\u79d1\u306e\u6559\u6750<\/a>\u2026 \u7406\u79d1\u6559\u5e2b\u3092\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\uff01\u6388\u696d\u306e\u8cea\u3092\u9ad8\u3081\u3001\u6e96\u5099\u3092\u52b9\u7387\u5316\u3059\u308b\u305f\u3081\u306e\u9078\u308a\u3059\u3050\u308a\u306e\u6559\u6750\u3092\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\r\n<li><a href=\"https:\/\/www.youtube.com\/c\/kkuwako\">Youtube<\/a>\u2026\u79d1\u5b66\u5b9f\u9a13\u7b49\u306e\u52d5\u753b\u3092\u914d\u4fe1\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\r\n<li><a href=\"https:\/\/music.youtube.com\/playlist?list=PLoK4ZvKN9S2NgpYIochcQs0aL-vrRB_Qw\">\u79d1\u5b66\u30e9\u30b8\u30aa<\/a>\u00a0\u2026\u79d1\u5b66\u30c8\u30d4\u30c3\u30af\u3092\u307b\u307c\u6bce\u65e5\u914d\u4fe1\u4e2d\uff01AI\u6280\u8853\u3092\u99c6\u4f7f\u3057\u3066\u4f5c\u6210\u3057\u305f\u300c\u8033\u3067\u697d\u3057\u3080\u79d1\u5b66\u300d\u3092\u304a\u5c4a\u3051\u3057\u307e\u3059\u3002<\/li>\r\n<li><a href=\"http:\/\/phys-edu.net\/wp\/?page_id=20940\">\u8b1b\u6f14<\/a>\u00a0\u2026\u5168\u56fd\u5404\u5730\u3067\u5b9f\u9a13\u8b1b\u7fd2\u4f1a\u30fb\u30b5\u30a4\u30a8\u30f3\u30b9\u30b7\u30e7\u30fc\u7b49\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002<\/li>\r\n<li><a href=\"http:\/\/phys-edu.net\/wp\/?page_id=37\">About<\/a>\u00a0\u2026\u300c\u79d1\u5b66\u306e\u30cd\u30bf\u5e33\u300d\u306e\u30b3\u30f3\u30bb\u30d7\u30c8\u3084\u3001\u904b\u55b6\u8005\u3067\u3042\u308b\u6851\u5b50\u7814\u306e\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u30fb\u60f3\u3044\u3092\u307e\u3068\u3081\u3066\u3044\u307e\u3059\u3002<\/li>\r\n<li><a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">\u304a\u554f\u3044\u5408\u308f\u305b<\/a>\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<p>&nbsp;<\/p>\r\n","protected":false},"excerpt":{"rendered":"<p>T\u00e4ss\u00e4 puhuu Science Trainer Kuwako Ken. Jokainen p\u00e4iv\u00e4 on uusi koe. &#8220;Miksi heitetty esine palaa takaisin [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":64684,"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-64709","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\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-17.52.07.jpeg","jetpack-related-posts":[{"id":64003,"url":"https:\/\/phys-edu.net\/wp\/?p=64003&lang=fi","url_meta":{"origin":64709,"position":0},"title":"Py\u00f6r\u00e4n kaatumisen salaisuus piilee avaruudessa! Opi presessiosta maapallopy\u00f6r\u00e4n avulla","author":"\u6851\u5b50 \u7814","date":"2026\u5e745\u670831\u65e5","format":false,"excerpt":"T\u00e4ss\u00e4 puhuu Science Trainer Ken Kuwako. Jokainen p\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\/2026\/05\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2026-05-31-5.13.29.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2026-05-31-5.13.29.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2026-05-31-5.13.29.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2026-05-31-5.13.29.jpeg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":64172,"url":"https:\/\/phys-edu.net\/wp\/?p=64172&lang=fi","url_meta":{"origin":64709,"position":1},"title":"Miksi taifuunin aallot yht\u00e4kki\u00e4 kaksinkertaistuvat? 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