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Comment on Indestructible quartz crystal can store 360TB of data for billions of years

zero_spelled_with_an_ecks@programming.dev ⁨1⁩ ⁨month⁩ ago

The ‘5D’ in the name comes from the fact that, unlike 2D markings on a piece of paper or tape, this method uses two optical dimensions and three spatial coordinates to write throughout the material.

Went to the article seeking answers but got only more questions.

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Asetru@feddit.org ⁨1⁩ ⁨month⁩ ago
en.m.wikipedia.org/wiki/5D_optical_data_storage

The “5-dimensional” descriptor is only a marketing term, since the device has 3 physical dimensions and no exotic higher dimensional properties. The fractal/holographic nature of its data storage is also purely 3-dimensional. The size, orientation and three-dimensional position of the nanostructures comprise the so-called five dimensions.

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- Nawor3565@lemmy.blahaj.zone ⁨1⁩ ⁨month⁩ ago
  It sounds kinda like the “trick” on the internet for fitting more notes onto a note-sheet for an exam. You’re still using the same physical space to store information, but you’re introducing a new degree of freedom that allows you to increase storage density.
  
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- Grass@sh.itjust.works ⁨1⁩ ⁨month⁩ ago
  It makes me think about how the 2.5d glass screen protectors with bevelled edge eventually became 3d for curved screen phones, then 5d, then 9d, and I’ve seen some silly 1000d and 9999d because clearly none of these marketing idiots remember what the d numbers even referred to in the first place. They used to explain what each d gave you and now its just a number and higher is better.
  
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  - milicent_bystandr@lemm.ee ⁨1⁩ ⁨month⁩ ago
    dd glass. Unbreakable for your bra, or for copying blocks of data. Or both.
    
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- towerful@programming.dev ⁨1⁩ ⁨month⁩ ago
  Seems more like 5 axis than 5 dimensions.
  Sounds like a slice through the crystal that can be moved up and down and rotated through 2 angles (eg roll and pitch)
  
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  - gazter@aussie.zone ⁨1⁩ ⁨month⁩ ago
    5 axis and 5 dimensions are essentially the same thing, right? A 2D graph has 2 axes, a 3D one has three, 4D graph can be shown with colour representing the 4th axis, etc.
    
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    towerful@programming.dev ⁨1⁩ ⁨month⁩ ago
    Yeh, axis was the wrong term. I was thinking degrees of freedom.
    However, I misunderstood the concept.
    
    The extra dimensions are basically optical manipulation, like the other comment says with the red and blue lenses.
    
    I thought it was more about the crystals attitude. So in addition to x, y and z, you also have alpha, beta, gamma.
    Which would be 3 dimensions/axis with 6 degrees of freedom
    
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Empricorn@feddit.nl ⁨1⁩ ⁨month⁩ ago
The extra dimensions are time and inception. I now know less about it than when I started.

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