observable

観察できる、目に見える

目で見たり、気づいたりすることができる。

やさしい英語で： Possible to see or notice.

• There was no observable change.
• The treatment produced several observable effects.
• Some differences are observable only under bright light.

類義語： noticeable, visible, detectable

反対語： unobservable, imperceptible

よく使う表現： observable change, observable effect, directly observable, observable universe

観測量

温度など、直接測定できる物理的な量。

やさしい英語で： A physical feature, such as temperature, that can be directly measured.

• Temperature is an observable.
• The experiment measured several observables.
• Each observable has a value that can be recorded.

よく使う表現： physical observable, measurable observable, quantum observable