Last Updated：2025/11/20
Sentence
天文学者たちは観測中に水素アルファ（Hα）線の放射を分離するために、干渉型光学フィルターを使用した。
Quizzes for review
The astronomers used an interference filter to isolate the hydrogen-alpha emission during the observation.
See correct answer
The astronomers used an interference filter to isolate the hydrogen-alpha emission during the observation.
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Related words
interference filter
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