• @egeres
    link
    English
    111 months ago

    What are they made of anyways?? Could one see any etching marks with a microscope?

    • Morphit
      link
      fedilink
      English
      411 months ago

      Usually aluminium or glass. There’s a metallic coating applied to the outside surfaces that stores the data. That layer is very thin though, so most of the material is the substrate.

    • @brlemworld
      link
      English
      311 months ago

      Bunch of tiny magnets either north or south.