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	<title>電子レンジは量が2倍なら時間も約2倍かかる/en - 版の履歴</title>
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	<updated>2026-10-29T16:12:35Z</updated>
	<subtitle>このウィキのこのページに関する変更履歴</subtitle>
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		<id>https://mamechi.org/index.php?title=%E9%9B%BB%E5%AD%90%E3%83%AC%E3%83%B3%E3%82%B8%E3%81%AF%E9%87%8F%E3%81%8C2%E5%80%8D%E3%81%AA%E3%82%89%E6%99%82%E9%96%93%E3%82%82%E7%B4%842%E5%80%8D%E3%81%8B%E3%81%8B%E3%82%8B/en&amp;diff=1453&amp;oldid=prev</id>
		<title>MamechiAdmin: 英語訳を取り込み（pages/translations_en.json）</title>
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		<updated>2026-10-29T13:17:48Z</updated>

		<summary type="html">&lt;p&gt;英語訳を取り込み（pages/translations_en.json）&lt;/p&gt;
&lt;p&gt;&lt;b&gt;新規ページ&lt;/b&gt;&lt;/p&gt;&lt;div&gt;&amp;lt;languages/&amp;gt;&lt;br /&gt;
{{豆知識&lt;br /&gt;
|番号=0043&lt;br /&gt;
|投稿者=まめち編集部&lt;br /&gt;
|本文=The more food you put in a microwave, the less it heats in the same time. For frozen rice, going from one portion to two takes about 1.8 times as long, and three portions about 2.2 times.&lt;br /&gt;
|なぜ=A microwave can only deliver as much heat as its power rating (for example 600 W), and food heats up through friction as water molecules keep turning with the waves. Twice the food needs twice the heat, but the power stays the same, so it takes longer.&lt;br /&gt;
|ジャンル=料理・食&lt;br /&gt;
|ファクト度=A&lt;br /&gt;
|ファクト度の根拠=The time ratios come from a public organisation&amp;#039;s guide table (primary) and the mechanism from a university document. Not S because these are rough guides that vary with the model and the food&lt;br /&gt;
|ネタ度=B&lt;br /&gt;
|ネタ度の根拠=Obvious once said, but slightly surprising that doubling the amount does not quite double the time&lt;br /&gt;
|便利度=S&lt;br /&gt;
|便利度の根拠=Usable every day when reheating, with less under- or over-heating&lt;br /&gt;
|検証ステータス=根拠あり&lt;br /&gt;
|根拠1URL=https://www.komenet.jp/pdf/hozon.pdf&lt;br /&gt;
|根拠1要約=Guide to thawing frozen rice from the Rice Stable Supply Support Organization (Komenet). At 600 W: one portion (150 g) 2 min, two 3 min 40 s, three 4 min 30 s; at 500 W: 2 min 30 s, 4 min 30 s, 5 min 30 s. Place it &amp;quot;at the edge of the turntable (in the centre for flat types)&amp;quot;&lt;br /&gt;
|根拠1格付け=一次&lt;br /&gt;
|根拠2URL=https://kadenfan.hitachi.co.jp/range/recipe/mro-w10x/s/A002.html&lt;br /&gt;
|根拠2要約=&amp;quot;Reheating rice&amp;quot; for a Hitachi microwave without a turntable. For two or more bowls or portions, make them about the same size and place them together in the centre of the table plate&lt;br /&gt;
|根拠2格付け=一次&lt;br /&gt;
|根拠3URL=https://physique.isc.chubu.ac.jp/MW-Meeting02.pdf&lt;br /&gt;
|根拠3要約=Research document from Chubu University. Water heats as its molecules (electric dipoles) turn with the microwaves and rub against their surroundings. In crystalline ice, hydrogen bonds stop the molecules from turning, so ice is not heated by microwaves&lt;br /&gt;
|根拠3格付け=二次&lt;br /&gt;
|補足=In theory, heating 200 g of water from 20°C to 60°C takes about 33.5 kJ, about 56 seconds at 600 W (confirmed by calculation; in practice heat also goes into the container and the oven, so it takes longer). The time is not exactly proportional because, with small amounts, some of the waves miss the food and are wasted. Where to place food is opposite for the two types: at the edge for turntable models, in the centre for flat models without a turntable. Frozen food heats unevenly because ice barely warms up and the thawed parts get hot first. Another kitchen-tool fact is [[Special:MyLanguage/ざるや茶こしの網は裏から水を当てると早く落ちる|#0039]]. Japanese Wikipedia&amp;#039;s &amp;quot;Microwave oven&amp;quot; (電子レンジ) article explains the mechanism but not the link between amount and time.&lt;br /&gt;
|検証日時=2026-10-29&lt;br /&gt;
|検証方式=AI＋人&lt;br /&gt;
|本家既出チェック=本家に既出&lt;br /&gt;
|本家の該当ページ=https://ja.wikipedia.org/wiki/%E9%9B%BB%E5%AD%90%E3%83%AC%E3%83%B3%E3%82%B8&lt;br /&gt;
}}&lt;/div&gt;</summary>
		<author><name>MamechiAdmin</name></author>
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