Coquitlam Public Library

Radio Astronomy, Episode 4

eng

videorecording

Radio Astronomy

Originally produced by The Great Courses in 2017

27

Not long after the birth of radio astronomy, a Dutch student used what was then known about the physics of atoms to determine that if hydrogen existed in interstellar space, it would produce a specific spectral line at radio wavelengths. In 1951, the line was detected at 21 cm, exactly as predicted. At that moment, our understanding of the universe forever changed

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