赤道で金を買って北極で売っても儲からない/en - 版の履歴

MamechiAdmin: 英語訳を取り込み（pages/translations_en.json）

2026-10-29T10:34:48Z

英語訳を取り込み（pages/translations_en.json）

← 古い版		2026年10月29日 (木) 19:34時点における版
2行目:		2行目:
	{{豆知識		{{豆知識
	\|番号=0020		\|番号=0020
			\|投稿者=まめち編集部
	\|本文=The idea that you can profit by buying gold where gravity is weak, at the equator, and selling it where gravity is strong, at the North Pole, does not work.		\|本文=The idea that you can profit by buying gold where gravity is weak, at the equator, and selling it where gravity is strong, at the North Pole, does not work.
	\|なぜ=Trade is by mass, and scales used in trade are verified and adjusted to the gravity where they are used, so reweighing shows no difference.		\|なぜ=Trade is by mass, and scales used in trade are verified and adjusted to the gravity where they are used, so reweighing shows no difference.

MamechiAdmin: 英語訳の「更新が必要」の印を外す（訳は対応表と同じ）

2026-10-29T04:00:33Z

英語訳の「更新が必要」の印を外す（訳は対応表と同じ）

← 古い版		2026年10月29日 (木) 13:00時点における版
2行目:		2行目:
	{{豆知識		{{豆知識
	\|番号=0020		\|番号=0020
	\|本文=~~<span class="mw-translate-fuzzy">~~The idea that you can profit by buying gold where gravity is weak, at the equator, and selling it where gravity is strong, at the North Pole, does not work.~~</span>~~		\|本文=The idea that you can profit by buying gold where gravity is weak, at the equator, and selling it where gravity is strong, at the North Pole, does not work.
	\|なぜ=Trade is by mass, and scales used in trade are verified and adjusted to the gravity where they are used, so reweighing shows no difference.		\|なぜ=Trade is by mass, and scales used in trade are verified and adjusted to the gravity where they are used, so reweighing shows no difference.
	\|ジャンル=お金・制度		\|ジャンル=お金・制度

MamechiAdmin: 英語訳を取り込み（pages/translations_en.json）

2026-10-29T03:58:24Z

英語訳を取り込み（pages/translations_en.json）

← 古い版		2026年10月29日 (木) 12:58時点における版
2行目:		2行目:
	{{豆知識		{{豆知識
	\|番号=0020		\|番号=0020
	\|本文=The idea that you can profit by buying gold where gravity is weak, at the equator, and selling it where gravity is strong, at the North Pole, does not work.		\|本文=<span class="mw-translate-fuzzy">The idea that you can profit by buying gold where gravity is weak, at the equator, and selling it where gravity is strong, at the North Pole, does not work.</span>
	\|なぜ=Trade is by mass, and scales used in trade are verified and adjusted to the gravity where they are used, so reweighing shows no difference.		\|なぜ=Trade is by mass, and scales used in trade are verified and adjusted to the gravity where they are used, so reweighing shows no difference.
	\|ジャンル=お金・制度		\|ジャンル=お金・制度

MamechiAdmin: 英語訳を取り込み（pages/translations_en.json）

2026-10-29T03:57:43Z

英語訳を取り込み（pages/translations_en.json）

← 古い版		2026年10月29日 (木) 12:57時点における版
2行目:		2行目:
	{{豆知識		{{豆知識
	\|番号=0020		\|番号=0020
	\|本文=The idea that you can profit by buying gold where gravity is weak, at the equator, and selling it where gravity is strong, at the North Pole, does not work. Trade is by mass, and scales used in trade are verified and adjusted to the gravity where they are used, so reweighing shows no difference.		\|本文=The idea that you can profit by buying gold where gravity is weak, at the equator, and selling it where gravity is strong, at the North Pole, does not work.
			\|なぜ=Trade is by mass, and scales used in trade are verified and adjusted to the gravity where they are used, so reweighing shows no difference.
	\|ジャンル=お金・制度		\|ジャンル=お金・制度
	\|ファクト度=C		\|ファクト度=C

MamechiAdmin: 英語訳を取り込み（pages/translations_en.json）

2026-10-29T03:04:14Z

英語訳を取り込み（pages/translations_en.json）

新規ページ

<languages/>
{{豆知識
|番号=0020
|本文=The idea that you can profit by buying gold where gravity is weak, at the equator, and selling it where gravity is strong, at the North Pole, does not work. Trade is by mass, and scales used in trade are verified and adjusted to the gravity where they are used, so reweighing shows no difference.
|ジャンル=お金・制度
|ファクト度=C
|ファクト度の根拠=Rating of the claim that it makes a profit. The regulation of trade scales and their adjustment to the place of use are confirmed by primary sources (local government, the law, a weights-and-measures office), but the "profit from gold" idea itself is sourced only from a forum (tertiary)
|ネタ度=S
|ネタ度の根拠=The tempting idea of profiting from gravity, and the catch
|便利度=該当なし
|便利度の根拠=A fact worth knowing for its own sake
|検証ステータス=反証あり
|根拠1URL=https://www.city.takamatsu.kagawa.jp/kurashi/kurashi/sodan/shohi_seikatsu/kensa.files/hakari_kounyu.pdf
|根拠1要約=Notice from Takamatsu City. Scales used for trade (selling food by weight, buying precious metals) or certification are regulated by the Measurement Act
|根拠1格付け=一次
|根拠2URL=https://laws.e-gov.go.jp/api/2/law_data/404AC0000000051?response_format=json&law_full_text_format=json
|根拠2要約=Measurement Act (e-Gov law database). Article 16: a specified measuring instrument without a verification mark may not be used, or held for use, for measurement in trade or certification
|根拠2格付け=一次
|根拠3URL=https://www.tokyo.med.or.jp/wp-content/uploads/application/pdf/20251202-keiryouhou.pdf
|根拠3要約=Notice from the Tokyo weights-and-measures office. Scales have a designated area of use and may be used if the local gravitational acceleration is within the marked range
|根拠3格付け=一次
|根拠4URL=https://www.physicsforums.com/threads/weights-at-different-altitudes.713737/
|根拠4要約=Physics forum (2013). To the question whether you could make money buying gold at one altitude and selling it at another, the answer is that with a balance the counterweights get lighter by the same amount, so there is no difference
|根拠4格付け=三次
|補足=If you carried a spring scale with you, you would see a difference of about 0.5% between the equator and the North Pole (#0012). But scales used in trade are adjusted to local gravity ([[Special:MyLanguage/取引に使うはかりには使ってよい場所が書いてある|#0018]]), and an unadjusted scale may not be used in trade. Shipping the gold would cost far more anyway.
|検証日時=2026-10-29
|検証方式=AI＋人
|本家既出チェック=未掲載
|派生元=体重計の数字は緯度が高いほど大きく出る
}}