{"id":58728,"date":"2026-01-11T05:31:35","date_gmt":"2026-01-10T20:31:35","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=58728"},"modified":"2026-01-11T05:31:35","modified_gmt":"2026-01-10T20:31:35","slug":"miksi-syottajan-kumpu-on-25-cm-korkea-kummun-korkeuden-taustalla-oleva-tiede","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=58728&lang=fi","title":{"rendered":"Miksi sy\u00f6tt\u00e4j\u00e4n kumpu on 25 cm korkea? Kummun korkeuden taustalla oleva tiede"},"content":{"rendered":"<p style=\"text-align: center;\"><span style=\"color: #339966;\"><b>Olen tiedevalmentaja Ken Kuwako. Jokainen p\u00e4iv\u00e4 on tieteellinen koe.<\/b><\/span><\/p>\n<p style=\"text-align: center;\">\u3010<a href=\"https:\/\/music.youtube.com\/watch?v=pyP6etjiDBw&amp;si=A6q_6PSP3rvtiGVs\">T\u00e4m\u00e4 artikkeli on kuunneltavissa my\u00f6s radiona!<\/a>\u3011<\/p>\n<p>Oletko koskaan baseball-ottelua katsoessasi pys\u00e4htynyt miettim\u00e4\u00e4n, miksi sy\u00f6tt\u00e4j\u00e4 seisoo niin korkealla kummulla? Sy\u00f6tt\u00e4j\u00e4n kumpu on s\u00e4\u00e4nt\u00f6jen mukaan noin <b>25 cm<\/b> korkeampi kuin kotipes\u00e4, jossa ly\u00f6j\u00e4 seisoo. Vain 25 senttimetri\u00e4 \u2013 mutta tuo pieni korkeusero on juuri se salaisuus, joka tekee pelist\u00e4 mielenkiintoisen. T\u00e4n\u00e4\u00e4n sukelletaan sy\u00f6tt\u00f6kummun mysteeriin <b>pallon radan<\/b> ja <b>fysiikan lakien<\/b> kautta!<\/p>\n<h3>Vapaan pudotuksen draamaa vain 0,5 sekunnissa<\/h3>\n<p>Sy\u00f6tt\u00e4j\u00e4n ja siepparin v\u00e4linen et\u00e4isyys on s\u00e4\u00e4nt\u00f6jen mukaan tarkalleen <b>18,44 metri\u00e4<\/b>.<\/p>\n<p style=\"text-align: center;\">L\u00e4hde: Spojoba <a href=\"https:\/\/spojoba.com\/articles\/182\">https:\/\/spojoba.com\/articles\/182<\/a><\/p>\n<p>Kun ammattilaispelaaja heitt\u00e4\u00e4 kovaa, noin 140 km\/h, pallo kiit\u00e4\u00e4 sy\u00f6tt\u00e4j\u00e4n k\u00e4dest\u00e4 siepparin r\u00e4pyl\u00e4\u00e4n vain noin <b>0,5 sekunnissa<\/b>.<\/p>\n<div class=\"math-block\" style=\"text-align: center;\" data-math=\"140 \\text{ km\/h} = \\frac{140 \\times 1000 \\text{ m}}{3600 \\text{ s}} \\approx 38.89 \\text{ m\/s}\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-58682\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-01-10-6.48.49.jpg\" alt=\"\" width=\"348\" height=\"64\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-01-10-6.48.49.jpg 706w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-01-10-6.48.49-300x55.jpg 300w\" sizes=\"auto, (max-width: 348px) 100vw, 348px\" \/><\/div>\n<div class=\"math-block\" data-math=\"140 \\text{ km\/h} = \\frac{140 \\times 1000 \\text{ m}}{3600 \\text{ s}} \\approx 38.89 \\text{ m\/s}\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-58683 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-01-10-6.48.57.jpg\" alt=\"\" width=\"223\" height=\"63\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-01-10-6.48.57.jpg 454w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-01-10-6.48.57-300x85.jpg 300w\" sizes=\"auto, (max-width: 223px) 100vw, 223px\" \/><\/div>\n<p>Se on vain silm\u00e4nr\u00e4p\u00e4ys, mutta tuon puolen sekunnin aikana maapallon painovoima vet\u00e4\u00e4 palloa armottomasti kohti maata. Jos sy\u00f6tt\u00e4j\u00e4 heitt\u00e4isi pallon t\u00e4ysin vaakasuoraan maanpinnan suuntaisesti, kuinka paljon luulet pallon putoavan matkalla?<\/p>\n<h3>Fysiikan vastaus: Vaakasuora heittoliike<\/h3>\n<p>T\u00e4ss\u00e4 kohtaa kuvaan astuu fysiikan tunneilta tuttu <b>vaakasuora heittoliike<\/b>. Lasketaanpa, kuinka paljon vaakasuoraan heitetty esine putoaa pystysuunnassa painovoiman vaikutuksesta. Kun ilmanvastusta ei huomioida, putoamismatka y lasketaan seuraavalla kaavalla:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-50465 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-08-04-5.59.44.jpg\" alt=\"\" width=\"109\" height=\"53\" \/><\/p>\n<p>T\u00e4ss\u00e4 g on putoamiskiihtyvyys (noin 9,8 m\/s\u00b2) ja t on aika (0,5 s). Kun sijoitamme luvut kaavaan&#8230;<\/p>\n<div><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-50466 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-08-04-5.59.48.jpg\" alt=\"\" width=\"360\" height=\"58\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-08-04-5.59.48.jpg 682w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-08-04-5.59.48-300x48.jpg 300w\" sizes=\"auto, (max-width: 360px) 100vw, 360px\" \/><\/div>\n<div><\/div>\n<div class=\"math-block\">Uskomatonta kyll\u00e4, pallo putoaa matkalla siepparille jopa <b>1,2 metri\u00e4<\/b>!<\/div>\n<h3>Kummun 25 senttimetri\u00e4 pelastaa sy\u00f6t\u00f6n<\/h3>\n<p>Nyt ymm\u00e4rr\u00e4mme, miksi sy\u00f6tt\u00f6kummun 25 senttimetrin (0,25 m) korkeudella on merkityst\u00e4. Lasketaanpa, mill\u00e4 korkeudella pallo on kotipes\u00e4n kohdalla, kun se heitet\u00e4\u00e4n vaakasuoraan kummulta.<\/p>\n<p>Yleisess\u00e4 yl\u00e4kautta tapahtuvassa heitossa pallo irtoaa k\u00e4dest\u00e4 noin 1,8\u20132,0 metrin korkeudelta maanpinnasta. K\u00e4ytet\u00e4\u00e4n t\u00e4ss\u00e4 laskussa 1,8 metri\u00e4.<\/p>\n<p>Sy\u00f6tt\u00f6alue (strike zone) on leveydelt\u00e4\u00e4n noin 70 cm korkea &#8220;n\u00e4kym\u00e4t\u00f6n ikkuna&#8221;, joka leijuu kotipes\u00e4n yl\u00e4puolella: alareuna on noin 50 cm ja yl\u00e4reuna noin 120 cm korkeudella maasta.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-58685 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-01-10-7.02.30.jpg\" alt=\"\" width=\"479\" height=\"357\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-01-10-7.02.30.jpg 926w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-01-10-7.02.30-300x224.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-01-10-7.02.30-768x572.jpg 768w\" sizes=\"auto, (max-width: 479px) 100vw, 479px\" \/><\/p>\n<p>&lt;L\u00e4hde&gt; Baseball-sanakirja https:\/\/www.homemate-research-baseball.com\/useful\/10151_baseball_dic\/index10.php<\/p>\n<p>T\u00e4ss\u00e4 on havainnollistus tilanteesta ilman kumpua:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-58686 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-01-10-7.24.45.jpg\" alt=\"\" width=\"633\" height=\"195\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-01-10-7.24.45.jpg 1694w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-01-10-7.24.45-300x92.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-01-10-7.24.45-1024x316.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-01-10-7.24.45-768x237.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-01-10-7.24.45-1536x473.jpg 1536w\" sizes=\"auto, (max-width: 633px) 100vw, 633px\" \/><\/p>\n<p>Jos pallo irtoaa 1,8 metrin korkeudesta, se putoaa 1,2 metri\u00e4, jolloin se saapuu ly\u00f6j\u00e4lle 0,6 metrin (60 cm) korkeudella. Se osuu sy\u00f6tt\u00f6alueelle, mutta melko alas.<\/p>\n<p>Katsotaanpa sitten tilannetta kummun kanssa:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-58687 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-01-10-7.24.50.jpg\" alt=\"\" width=\"610\" height=\"219\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-01-10-7.24.50.jpg 1732w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-01-10-7.24.50-300x108.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-01-10-7.24.50-1024x368.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-01-10-7.24.50-768x276.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-01-10-7.24.50-1536x552.jpg 1536w\" sizes=\"auto, (max-width: 610px) 100vw, 610px\" \/><\/p>\n<p>Koska koko l\u00e4ht\u00f6asetelma nousee 0,25 metri\u00e4 ylemm\u00e4s, pallo saapuu 0,85 metrin (85 cm) korkeudelle. Se on tismalleen keskell\u00e4 sy\u00f6tt\u00f6aluetta!<\/p>\n<h3>Miksi vaakasuora heitto on niin t\u00e4rke\u00e4?<\/h3>\n<p>Jotta sy\u00f6tt\u00e4j\u00e4 saisi heittoonsa maksimaalisen tehon, h\u00e4nen on siirrett\u00e4v\u00e4 vartalon kierrosta ja k\u00e4den liikkeest\u00e4 tuleva energia 100-prosenttisesti palloon. Jos kumpua ei olisi, sy\u00f6tt\u00e4j\u00e4n t\u00e4ytyisi t\u00e4hd\u00e4t\u00e4 hieman &#8220;yl\u00e4viistoon&#8221; osuakseen sy\u00f6tt\u00f6alueen keskelle, mik\u00e4 vaikeuttaisi k\u00e4den t\u00e4ysipainoista saattamista vaakasuunnassa. T\u00e4m\u00e4n 25 senttimetrin korkeuseron ansiosta sy\u00f6tt\u00e4j\u00e4 voi <b>heitt\u00e4\u00e4 k\u00e4tens\u00e4 rennosti vaakasuoraan<\/b> ja ladata palloon valtavan voiman, joka p\u00e4\u00e4tyy suoraan sy\u00f6tt\u00f6alueen ytimeen.<\/p>\n<h3>Urheilu on fysiikan laboratorio<\/h3>\n<p>Kuten huomaat, sy\u00f6tt\u00f6kummun korkeus ei ole vain mielivaltainen s\u00e4\u00e4nt\u00f6, vaan <b>fysiikan lakeihin perustuva tarkka suunnitteluty\u00f6<\/b>. Baseball k\u00e4tkee sis\u00e4\u00e4ns\u00e4 paljon muutakin mielenkiintoista tiedett\u00e4, kuten ilmanvastuksen ja kierreheittoihin vaikuttavan Magnus-ilmi\u00f6n. Kun urheilua katsoo kysyen &#8220;miksi?&#8221;, oppikirjojen fysiikan kaavat her\u00e4\u00e4v\u00e4t eloon. Seuraavan kerran kun katsot peli\u00e4, muista tuo 25 senttimetrin fysiikka!<\/p>\n<h3>Ota yhteytt\u00e4 ja kysy lis\u00e4\u00e4<\/h3>\n<p>Tieteen ihmeet ja hauskuus l\u00e4hemm\u00e4s arkea! Olen koonnut vinkkej\u00e4 hauskoihin kotikokeisiin ja selitt\u00e4nyt tieteen ilmi\u00f6it\u00e4 selke\u00e4sti. Tutustu ja etsi lis\u00e4\u00e4 tietoa! \u30fbTietoa yll\u00e4pit\u00e4j\u00e4st\u00e4, Ken Kuwakosta: <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=37\">T\u00e4\u00e4ll\u00e4<\/a> \u30fbYhteydenotot (kirjoitusty\u00f6t, luennot, tiedepajat, TV-konsultointi jne.): <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">T\u00e4\u00e4ll\u00e4<\/a> <span class=\"s2\">\u30fbUusimmat p\u00e4ivitykset <a href=\"https:\/\/x.com\/kuwako\">X-palvelussa<\/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\">Tiedevinkkien kanavalla<\/a> julkaistaan kokeiluvideoita!<\/p>\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><a href=\"https:\/\/phys-edu.net\/wp\/?p=68740\">\u300c\u30cd\u30a4\u30c1\u30e3\u30fc\u30c6\u30a3\u30fc\u30c1\u30e3\u30fc\u300d\uff08TBS\uff09<\/a>\u306b\u51fa\u6f14\u3057\u307e\u3057\u305f\u3002Tver\u306b\u306611\u67083\u65e5\uff08\u706b\uff09\u307e\u3067\u914d\u4fe1\u4e2d\u3067\u3059\u3002<\/li>\r\n<\/ul>\r\n<p><img class=\"alignnone  wp-image-68951 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/10\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-10-28-4.27.06.jpeg\" alt=\"\" width=\"474\" height=\"266\" \/><\/p>\r\n<ul>\r\n<li><a href=\"https:\/\/www.mbs.jp\/saturday-plus\/\">\u30b5\u30bf\u30d7\u30e9\uff08MBS\uff09<\/a>\u306b\u3066\u300c\u65e5\u5e38\u306b\u6f5c\u3080\uff01\u30d4\u30f3\u30c1\u8131\u51fa\u6cd5\u306b\u3064\u3044\u3066\u300d\u306e\u30b3\u30fc\u30ca\u30fc\u306b\u51fa\u6f14\u3057\u307e\u3057\u305f\u3002Tver\u306b\u3066<a href=\"https:\/\/tver.jp\/episodes\/epmfevh9zv?p=1654\">11\u67087\u65e5\uff08\u571f\uff09\u307e\u3067\u914d\u4fe1\u4e2d\u3067\u3059\u3002<\/a><\/li>\r\n<\/ul>\r\n<p><img class=\"alignnone  wp-image-69117 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-11-01-4.35.38.jpeg\" alt=\"\" width=\"443\" height=\"249\" \/><\/p>\r\n<ul>\r\n<li>11\u67084\u65e5\uff08\u6c34\uff09\u3000<a href=\"https:\/\/www.ntv.co.jp\/zip\/\">ZIP\uff08\u65e5\u672c\u30c6\u30ec\u30d3\uff09<\/a>7:20\u9803\u653e\u9001\u4e88\u5b9a\uff08\u79d1\u5b66\u76e3\u4fee\uff09<\/li>\r\n<li>11\u670827\u65e5\uff08\u91d1\uff09\u3000\u30c6\u30ec\u30d3\u76e3\u4fee\u756a\u7d44\u653e\u9001\u4e88\u5b9a<\/li>\r\n<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>\uff11\uff11\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=69130\">\u3069\u3046\u3057\u3066\u7d50\u9732\u306f\u8d77\u3053\u308b\u306e\u304b\uff1f\u7d50\u9732\u3092\u9632\u3050\u305f\u3081\u306b\u306f\uff1f\u5b9f\u9a13\u3067\u78ba\u304b\u3081\u3088\u3046\uff01<\/a><\/p>\r\n<p><img class=\"alignnone wp-image-69132 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/%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%88-2026-10-31-10.02.13-10.07.37.jpeg\" sizes=\"(max-width: 420px) 100vw, 420px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-10-31-10.02.13-10.07.37.jpeg 1322w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-10-31-10.02.13-10.07.37-300x253.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-10-31-10.02.13-10.07.37-1024x863.jpeg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-10-31-10.02.13-10.07.37-768x647.jpeg 768w\" alt=\"\" width=\"316\" height=\"266\" \/><\/p>\r\n<h3><b>\u66f8\u7c4d<strong>\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/h3>\r\n<ul>\r\n<li>\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<br \/><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>\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\" \/><\/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;\">\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<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<h3 style=\"text-align: left;\"><ul class=\"wp-block-latest-posts__list is-grid has-dates wp-block-latest-posts is-layout-flow wp-block-latest-posts-is-layout-flow\"><li><div class=\"wp-block-latest-posts__featured-image\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=69205&#038;lang=es\" aria-label=\"\u00a1Se enciende sin estar conectado! El misterio de la inducci\u00f3n mutua: un LED sobre una bobina que destella por un instante\"><img width=\"150\" height=\"150\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-11-03-4.47.00-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/a><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/phys-edu.net\/wp\/?p=69205&#038;lang=es\">\u00a1Se enciende sin estar conectado! El misterio de la inducci\u00f3n mutua: un LED sobre una bobina que destella por un instante<\/a><time datetime=\"2026-11-03T04:57:56+09:00\" class=\"wp-block-latest-posts__post-date\">2026\u5e7411\u67083\u65e5<\/time><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=69203&#038;lang=fi\" aria-label=\"Ei johtoa, silti syttyy! K\u00e4\u00e4min p\u00e4\u00e4ll\u00e4 oleva LED v\u00e4l\u00e4ht\u00e4\u00e4 hetkeksi \u2013 keskin\u00e4isinduktion ihme\"><img width=\"150\" height=\"150\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-11-03-4.47.00-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/a><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/phys-edu.net\/wp\/?p=69203&#038;lang=fi\">Ei johtoa, silti syttyy! K\u00e4\u00e4min p\u00e4\u00e4ll\u00e4 oleva LED v\u00e4l\u00e4ht\u00e4\u00e4 hetkeksi \u2013 keskin\u00e4isinduktion ihme<\/a><time datetime=\"2026-11-03T04:56:23+09:00\" class=\"wp-block-latest-posts__post-date\">2026\u5e7411\u67083\u65e5<\/time><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=69201&#038;lang=hi\" aria-label=\"\u092c\u093f\u0928\u093e \u0924\u093e\u0930 \u091c\u0941\u0921\u093c\u0947 \u0939\u0940 \u091c\u0932 \u0909\u0920\u0940 LED! \u0915\u0949\u0907\u0932 \u092a\u0930 \u092a\u0932 \u092d\u0930 \u0915\u0940 \u091a\u092e\u0915 \u0915\u093e \u0930\u093e\u091c\u093c \u0939\u0948 \u0905\u0928\u094d\u092f\u094b\u0928\u094d\u092f \u092a\u094d\u0930\u0947\u0930\u0923\"><img width=\"150\" height=\"150\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-11-03-4.47.00-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/a><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/phys-edu.net\/wp\/?p=69201&#038;lang=hi\">\u092c\u093f\u0928\u093e \u0924\u093e\u0930 \u091c\u0941\u0921\u093c\u0947 \u0939\u0940 \u091c\u0932 \u0909\u0920\u0940 LED! \u0915\u0949\u0907\u0932 \u092a\u0930 \u092a\u0932 \u092d\u0930 \u0915\u0940 \u091a\u092e\u0915 \u0915\u093e \u0930\u093e\u091c\u093c \u0939\u0948 \u0905\u0928\u094d\u092f\u094b\u0928\u094d\u092f \u092a\u094d\u0930\u0947\u0930\u0923<\/a><time datetime=\"2026-11-03T04:55:59+09:00\" class=\"wp-block-latest-posts__post-date\">2026\u5e7411\u67083\u65e5<\/time><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=69199&#038;lang=zh\" aria-label=\"\u6c92\u6709\u63a5\u7dda\u537b\u6703\u4eae!\u7dda\u5708\u4e0a\u7684LED\u77ac\u9593\u9583\u4e00\u4e0b,\u4e92\u611f\u7684\u795e\u5947\u73fe\u8c61\"><img width=\"150\" height=\"150\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-11-03-4.47.00-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/a><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/phys-edu.net\/wp\/?p=69199&#038;lang=zh\">\u6c92\u6709\u63a5\u7dda\u537b\u6703\u4eae!\u7dda\u5708\u4e0a\u7684LED\u77ac\u9593\u9583\u4e00\u4e0b,\u4e92\u611f\u7684\u795e\u5947\u73fe\u8c61<\/a><time datetime=\"2026-11-03T04:54:48+09:00\" class=\"wp-block-latest-posts__post-date\">2026\u5e7411\u67083\u65e5<\/time><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=69196&#038;lang=ko\" aria-label=\"\uc120\uc774 \uc5f0\uacb0\ub418\uc9c0 \uc54a\uc558\ub294\ub370 \ubd88\uc774 \ucf1c\uc9c4\ub2e4! \ucf54\uc77c \uc704 LED\uac00 \uc21c\uac04 \ubc18\uc9dd, \uc0c1\ud638 \uc720\ub3c4\uc758 \uc2e0\ube44\"><img width=\"150\" height=\"150\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-11-03-4.47.00-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/a><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/phys-edu.net\/wp\/?p=69196&#038;lang=ko\">\uc120\uc774 \uc5f0\uacb0\ub418\uc9c0 \uc54a\uc558\ub294\ub370 \ubd88\uc774 \ucf1c\uc9c4\ub2e4! \ucf54\uc77c \uc704 LED\uac00 \uc21c\uac04 \ubc18\uc9dd, \uc0c1\ud638 \uc720\ub3c4\uc758 \uc2e0\ube44<\/a><time datetime=\"2026-11-03T04:53:42+09:00\" class=\"wp-block-latest-posts__post-date\">2026\u5e7411\u67083\u65e5<\/time><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=69194&#038;lang=en\" aria-label=\"No Wires, Still Glowing! 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Mac\u306e\u300c\u30ad\u30fc\u306e\u30ea\u30d4\u30fc\u30c8\u300d\u3092\u8a66\u3057\u3066\u307f\u305f\"><img width=\"150\" height=\"150\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-11-03-4.36.21-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/a><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/phys-edu.net\/wp\/?p=40697\">\u305f\u3063\u305f2\u3064\u306e\u8a2d\u5b9a\u3067\u30bf\u30a4\u30d4\u30f3\u30b0\u304c\u6fc0\u5909! Mac\u306e\u300c\u30ad\u30fc\u306e\u30ea\u30d4\u30fc\u30c8\u300d\u3092\u8a66\u3057\u3066\u307f\u305f<\/a><time datetime=\"2026-11-03T04:22:56+09:00\" class=\"wp-block-latest-posts__post-date\">2026\u5e7411\u67083\u65e5<\/time><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=69165&#038;lang=es\" aria-label=\"\u00bfSolo con lavavajillas desaparece la condensaci\u00f3n de la ventana? La ciencia detr\u00e1s de las gotas que se extienden\"><img width=\"150\" height=\"150\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-10-31-10.02.13-10.07.37-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/a><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/phys-edu.net\/wp\/?p=69165&#038;lang=es\">\u00bfSolo con lavavajillas desaparece la condensaci\u00f3n de la ventana? La ciencia detr\u00e1s de las gotas que se extienden<\/a><time datetime=\"2026-11-02T04:33:38+09:00\" class=\"wp-block-latest-posts__post-date\">2026\u5e7411\u67082\u65e5<\/time><\/li>\n<\/ul><\/h3>\r\n<p>&nbsp;<\/p>\r\n<h3 style=\"text-align: left;\"><\/h3>\r\n","protected":false},"excerpt":{"rendered":"<p>Olen tiedevalmentaja Ken Kuwako. Jokainen p\u00e4iv\u00e4 on tieteellinen koe. \u3010T\u00e4m\u00e4 artikkeli on kuunneltavissa my\u00f6s ra [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":58718,"comment_status":"closed","ping_status":"open","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-58728","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category--fi"],"jetpack-related-posts":[{"id":55667,"url":"https:\/\/phys-edu.net\/wp\/?p=55667&lang=fi","url_meta":{"origin":58728,"position":0},"title":"Ei vain lelu! \u201cK\u00e4velev\u00e4tk\u00f6 hevoset varpaillaan?\u201d \u2014 Oppilaat oppivat aidon el\u00e4infiguurin avulla (Visailu toi hurjasti iloa!)","author":"\u6851\u5b50 \u7814","date":"2025\u5e7411\u670810\u65e5","format":false,"excerpt":"Kuutako Ken, Tiedevalmentaja. 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