array(24) { ["ID"]=> int(1094) ["id"]=> int(1094) ["title"]=> string(39) "furoku_8ff8204915eebd9a449879616b57ca65" ["filename"]=> string(43) "furoku_8ff8204915eebd9a449879616b57ca65.jpg" ["filesize"]=> int(982924) ["url"]=> string(93) "https://80th.gakken.jp/wp-content/uploads/2025/07/furoku_8ff8204915eebd9a449879616b57ca65.jpg" ["link"]=> string(92) "https://80th.gakken.jp/supplement/supplement-ok0854/furoku_8ff8204915eebd9a449879616b57ca65/" ["alt"]=> string(15) "ふろく画像" ["author"]=> string(1) "1" ["description"]=> string(0) "" ["caption"]=> string(0) "" ["name"]=> string(39) "furoku_8ff8204915eebd9a449879616b57ca65" ["status"]=> string(7) "inherit" ["uploaded_to"]=> int(1093) ["date"]=> string(19) "2025-07-30 08:40:15" ["modified"]=> string(19) "2025-07-30 08:40:15" ["menu_order"]=> int(0) ["mime_type"]=> string(10) "image/jpeg" ["type"]=> string(5) "image" ["subtype"]=> string(4) "jpeg" ["icon"]=> string(59) "https://80th.gakken.jp/wp-includes/images/media/default.png" ["width"]=> int(689) ["height"]=> int(940) ["sizes"]=> array(21) { ["thumbnail"]=> string(101) "https://80th.gakken.jp/wp-content/uploads/2025/07/furoku_8ff8204915eebd9a449879616b57ca65-185x145.jpg" ["thumbnail-width"]=> int(150) ["thumbnail-height"]=> int(118) ["medium"]=> string(101) "https://80th.gakken.jp/wp-content/uploads/2025/07/furoku_8ff8204915eebd9a449879616b57ca65-220x300.jpg" ["medium-width"]=> int(220) ["medium-height"]=> int(300) ["medium_large"]=> string(93) "https://80th.gakken.jp/wp-content/uploads/2025/07/furoku_8ff8204915eebd9a449879616b57ca65.jpg" ["medium_large-width"]=> int(689) ["medium_large-height"]=> int(940) ["large"]=> string(93) "https://80th.gakken.jp/wp-content/uploads/2025/07/furoku_8ff8204915eebd9a449879616b57ca65.jpg" ["large-width"]=> int(689) ["large-height"]=> int(940) ["thumbnail_v"]=> string(101) "https://80th.gakken.jp/wp-content/uploads/2025/07/furoku_8ff8204915eebd9a449879616b57ca65-150x200.jpg" ["thumbnail_v-width"]=> int(150) ["thumbnail_v-height"]=> int(200) ["thum_md"]=> string(101) "https://80th.gakken.jp/wp-content/uploads/2025/07/furoku_8ff8204915eebd9a449879616b57ca65-689x540.jpg" ["thum_md-width"]=> int(689) ["thum_md-height"]=> int(540) ["thum_md_v"]=> string(101) "https://80th.gakken.jp/wp-content/uploads/2025/07/furoku_8ff8204915eebd9a449879616b57ca65-375x500.jpg" ["thum_md_v-width"]=> int(375) ["thum_md_v-height"]=> int(500) } }

大人の科学マガジン

2008年度: Vol.22

平賀源内のエレキテル

江戸時代の天才科学者・平賀源内が作ったエレキテルが、ついに付録に登場！ミニサイズのかわいいエレキテルですが、ハンドルを回すと静電気が発生して電極から火花が飛びます。静電気で回転するフランクリンモーターも付いています。

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