196 @lemmy.blahaj.zone abbotsbury @lemmy.world 11 mo. ago

the pleasure is known

17 comments

Tried cleaning it up a bit and inverting
- Looks great !
  
  Thanks!
Isn't this an album cover
- Joy Division's debut album in 1979... "Unknown Pleasures". Giving some insight into the title of this post.
- https://files.catbox.moe/anlyit.jpg
  
  Joy division \m/
Ok but what is it?
- Like the other amigo said, it's detected emissions from a pulsar. For some more explanation, pulsars spin really fast and emit radio waves, think of it sorta like a lighthouse. So what the image is measuring is the intensity of the radio waves from this pulsar as it spins, with each period stacked in front of the last.
  
  Visual aid from Wikipedia:
  
  As you can see, this one has been simplified to demonstrate the concept, and the actual data is much more varied and interesting to look at; I do not know what causes the peak offsets and would also like an explanation
  
  with each period stacked in front of the last.
  
  Yeah, that part is confusing because the description says
  
  Time increases … toward the top …
  
  Which would mean the oldest pulse is in the foreground.
- I didn’t know either so I looked it up, apparently it was the first detected radio pulsar, briefly thought to be an extra terrestrial transmission…and later used on Joy Division album cover: https://en.m.wikipedia.org/wiki/PSR_B1919%2B21
didn't know the album cover was from a pulsar. I'd heard a story it was some kind of ECG trace of a heart attack / someone dying.
If you want a cool.animated version : https://pouria.dev/unknown-pleasures
the rule is not
I actually just watched a VSauce short about this last night.
- The pleasure is unknown... or is it?
  
  Here is an alternative Piped link(s):
  
  or is it?
  
  Piped is a privacy-respecting open-source alternative frontend to YouTube.
  
  I'm open-source; check me out at GitHub.
Tried cleaning it up a bit and inverting

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