The Stereo Socks - Inspired by Joy Division's 1979 debut album "Unknown Pleasures", the cover depicts an image of radio waves from pulsar CP 1919, from The Cambridge Encyclopaedia of Astronomy. Available
![radio astronomy - How did Jocelyn Bell Burnell discover the periodicity of CP 1919? - Astronomy Stack Exchange radio astronomy - How did Jocelyn Bell Burnell discover the periodicity of CP 1919? - Astronomy Stack Exchange](https://i.stack.imgur.com/OFpzp.jpg)
radio astronomy - How did Jocelyn Bell Burnell discover the periodicity of CP 1919? - Astronomy Stack Exchange
![National Radio Astronomy Observatory | NRAO on Twitter: "This image represents a stacked plot of radio signals from the first pulsar (CP 1919) ever observed, which also happened to serve as the National Radio Astronomy Observatory | NRAO on Twitter: "This image represents a stacked plot of radio signals from the first pulsar (CP 1919) ever observed, which also happened to serve as the](https://pbs.twimg.com/tweet_video_thumb/EA6ZNZbX4AM7n2i.jpg)
National Radio Astronomy Observatory | NRAO on Twitter: "This image represents a stacked plot of radio signals from the first pulsar (CP 1919) ever observed, which also happened to serve as the
![Joy Division's "Unknown Pleasures" used the image of the radio waves from the first recognized pulsar CP 1919 Joy Division's "Unknown Pleasures" used the image of the radio waves from the first recognized pulsar CP 1919](http://www.thevintagenews.com/wp-content/uploads/sites/65/2017/04/8700547602_0ec5b7f096_b-421x640.jpg)
Joy Division's "Unknown Pleasures" used the image of the radio waves from the first recognized pulsar CP 1919
![Pop Culture Pulsar: Origin Story of Joy Division's Unknown Pleasures Album Cover [Video] - Scientific American Blog Network Pop Culture Pulsar: Origin Story of Joy Division's Unknown Pleasures Album Cover [Video] - Scientific American Blog Network](https://blogs.scientificamerican.com/blogs/assets/sa-visual/Image/Graphis_pulsar.jpg)
Pop Culture Pulsar: Origin Story of Joy Division's Unknown Pleasures Album Cover [Video] - Scientific American Blog Network
![Pop Culture Pulsar: The Science Behind Joy Division's Unknown Pleasures Album Cover - Scientific American Blog Network Pop Culture Pulsar: The Science Behind Joy Division's Unknown Pleasures Album Cover - Scientific American Blog Network](https://blogs.scientificamerican.com/blogs/assets/sa-visual/Image/fig537.jpg)