288. なかやま[72] gsiCqYLigtw 2024年6月13日 10:19:53 : 3xCimhAOzE : eUE3dWs2YnZJYy4=[1]
Measuring λ of Starlight
How is λ of starlight measured ? One thing is certain. The λ before it enters measuring device is not be varied with the motion of measuring device. So, if measuring device is moved, it will become clear which λ was measured (which λ of starlight before or after extinction).
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