重力の単位ガルはガリレオにちなむ/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=0023		\|番号=0023
			\|投稿者=まめち編集部
	\|本文=The unit of gravitational acceleration, the gal (Gal), is named after Galileo Galilei; 1 gal is 1 cm/s², and Earth's gravity is about 980 gal. Under Japanese law the gal is a special unit that may be used only for measuring gravitational acceleration and the acceleration of earthquake shaking.		\|本文=The unit of gravitational acceleration, the gal (Gal), is named after Galileo Galilei; 1 gal is 1 cm/s², and Earth's gravity is about 980 gal. Under Japanese law the gal is a special unit that may be used only for measuring gravitational acceleration and the acceleration of earthquake shaking.
	\|なぜ=It was named after Galileo, who discovered the law of falling bodies and studied how things accelerate as they fall (GSI).		\|なぜ=It was named after Galileo, who discovered the law of falling bodies and studied how things accelerate as they fall (GSI).

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

2026-10-29T03:57:55Z

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
3行目:		3行目:
	\|番号=0023		\|番号=0023
	\|本文=The unit of gravitational acceleration, the gal (Gal), is named after Galileo Galilei; 1 gal is 1 cm/s², and Earth's gravity is about 980 gal. Under Japanese law the gal is a special unit that may be used only for measuring gravitational acceleration and the acceleration of earthquake shaking.		\|本文=The unit of gravitational acceleration, the gal (Gal), is named after Galileo Galilei; 1 gal is 1 cm/s², and Earth's gravity is about 980 gal. Under Japanese law the gal is a special unit that may be used only for measuring gravitational acceleration and the acceleration of earthquake shaking.
			\|なぜ=It was named after Galileo, who discovered the law of falling bodies and studied how things accelerate as they fall (GSI).
	\|ジャンル=科学・自然		\|ジャンル=科学・自然
	\|ファクト度=S		\|ファクト度=S

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

2026-10-29T03:03:51Z

英語訳を取り込み（pages/translations_en.json）

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<languages/>
{{豆知識
|番号=0023
|本文=The unit of gravitational acceleration, the gal (Gal), is named after Galileo Galilei; 1 gal is 1 cm/s², and Earth's gravity is about 980 gal. Under Japanese law the gal is a special unit that may be used only for measuring gravitational acceleration and the acceleration of earthquake shaking.
|ジャンル=科学・自然
|ファクト度=S
|ファクト度の根拠=Raised from the expected A to S: the origin, the size and the legal scope were all confirmed in primary sources (GSI's explanation and the text of the law)
|ネタ度=B
|ネタ度の根拠=Mildly interesting that the "gal" heard in earthquake news is also a unit of gravity
|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=根拠あり
|根拠1URL=https://www.gsi.go.jp/buturisokuchi/grageo_gravity
|根拠1要約=Explanation by GSI. Geodesy and geophysics express gravitational acceleration in Gal (0.01 m/s²), named after Galileo Galilei, who discovered the law of falling bodies. Earth's gravitational acceleration is 9.8 m/s² (980 Gal). GSI's absolute gravity measurements go down to 1 microgal
|根拠1格付け=一次
|根拠2URL=https://laws.e-gov.go.jp/api/1/lawdata/404CO0000000357
|根拠2要約=Cabinet Order on Units of Measurement (e-Gov), Appended Table 6. The gal (one hundredth of a metre per second squared) and the milligal (one thousandth of a gal) may be used only for "measurement of gravitational acceleration or vibration acceleration relating to earthquakes"
|根拠2格付け=一次
|補足=The gal is not an SI unit. Surface gravity ranges from about 976 to 983 gal with latitude and elevation; 980 is a rounded value (standard gravity is 980.665 gal). The "gal" of earthquake shaking is the same unit, which is easy to confuse with gravity itself. The origin and legal status are also in the Japanese Wikipedia article on the gal.
|検証日時=2026-10-29
|検証方式=AI＋人
|本家既出チェック=本家に既出
|本家の該当ページ=https://ja.wikipedia.org/wiki/ガル
|派生元=体重計の数字は緯度が高いほど大きく出る
}}