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Joined 1 year ago
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Cake day: June 26th, 2023

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  • One theory about nightmares is that they serve as exposure therapy for stressors. If your nightmares are too extreme, maybe you could set aside during the day to enter a calmer environment and try to review them without getting overwhelmed. It might desensitize you a little bit and make them less severe.

    I haven’t had severe nightmares since I was a preteen, but when I did, they tended to be pretty stressful (being kidnapped, being abandoned, my friends commiting suicide in front of me, etc). I’m not sure exactly why they stopped, but I eventually ‘burnt out’, and I just stopped really caring about them.

    Can’t say I turned out great, but I can say I don’t have nightmares anymore.









  • I only vaguely really know what's going on. I did some more research after commenting, and I think I understand a little bit more. The TI bubble memory has two separate layers. On of them, the 'magnetic epitaxial film', basically has a lot of magnetic molecules arranged to point in the same direction. The second layer has circles made of some nickel-iron alloy. What I think is happening is that the actual magnetic bubbles are held on the film, and the iron circles act as tracks the bubbles are pulled along. I don't think electrons in the bubble are actually moving, but I think the electron spin is. That would explain why the loops are capable of moving the bubbles faster than electrons.


  • Just from a quick Google search, it looks like it's similar to tape memory, except the data moves along the tape, instead of the tape moving over the reading head. According to this diagram by TI, it looks like the bubbles are on some iron wafer and forcibly moved around by two coils. Then, on a second substrate there are some type of read & write head.

    So here's how I would go about this: first, I'd wrap some small metal plates in insulated magnet wire, place two permanent magnets on the top and bottom (sandwich style) and stick a read head on the edge of the plate. Then you push AC current through the two coils offset by 90 degrees. This should push the bubble in a circle, and that can be read by the tape head.

    Keep in mind though, this is a complete guess based on a simplified diagram from the 70s. I don't actually know if this is how they work.