a: visible light ~
b: one particular note in a Beethoven symphony


"An astronomer who only studies visible light is like someone who could only hear one particular note in a Beethoven symphony. Infrared astronomers can hear a much wider part of the symphony of the Universe. They can detect what would be analogous to all the notes played in the bass clef."

Writer: J. S. Sweitzer
Date: Feb 13 2015 10:44 AM

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