The static on old CRT TVs with rabbit ears was the cosmic microwave background. No one in the last 25 years has ever seen it.

  • apemint@lemmy.world
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    2 days ago

    Well, not really. The cosmic microwave background radiation was a tiny fraction of that noise. What everyone saw was mostly thermal noise generated by the amplifier circuit inside the TV.

    • billwashere@lemmy.world
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      Don’t you still see this when using an OTA ATSC tuner on a newer LCD display? I thought this was a function of the signal generation and not the display technologies.

    • dan1101@lemm.ee
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      Well to be fair at some point most/all CRTs showed a blue screen instead of static. So it’s possible someone born in 2000 never saw the snowy display.

      • Allero@lemmy.today
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        As someone born in 2000, I’ve personally seen it and I think most people around me did. Maybe someone didn’t, though.

      • Blackmist@feddit.uk
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        I think they’re more likely to have been scrapped than other old tech.

        They’re bulky, and mine was too heavy to get out in the attic. I still have my ZX Spectrum and Amiga, but the CRT needed for lightgun games is long gone.

    • Hobbes@startrek.websiteOP
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      No, I just couldn’t remember exactly when. And as another commenter pointed out, what I should have said was analog TV’s.

    • davidgro@lemmy.world
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      Even before the 2000s they started showing a blue screen instead of static.

      That wasn’t just a digital or flat panel thing.

      But of course old sets were around for a long time.

      • Catoblepas@lemmy.blahaj.zone
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        My memory of the exacts here are fuzzy, but I think this depended on whether or not your TV picked up digital signal, analog, or both. I remember around that time we had a TV that would pick up static on some channels and have a blue input screen on others.

        • FlihpFlorp@lemm.ee
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          I remember back in the Wii days when I was young we had a flat screen that would go to the digital pattern with no input. However sometimes once in a while it would get that static loud no signal so I think mine had both

          I don’t really have a point here just wanted to share

        • Aceticon@lemmy.world
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          It’s definitelly an analog over the air TV thing.

          The way digital works you would either get a “No signal” indicator (because the circuitry detects the signal to noise ratio is too low) or squarish artifacts (because of the way the compression algorithms for digital video are designed).

        • entropicdrift@lemmy.sdf.org
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          Yeah, for instance the semi-ubiquitous “small TV with a vhs player built in” that was in a ton of mini-vans and kids’ rooms well into the early 2000s only supported analog cable/antenna signals, so it would give the black and white static when there was no signal.

    • Farid@startrek.website
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      Technically, it’s not about the display technology, but instead about the signal/tuner. More specifically if it’s analog or digital. Some modern TVs still have analog or hybrid tuners for backwards compatibility and regions that still use analog, so they can display static. For instance, in Ukraine we finished the switch to digital TV only a couple of years ago. If your TV had no digital tuner (as was the case for many) you had to buy a DAC box. Retirees/pensioners got them for free, sponsored by the government.

    • frezik@midwest.social
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      It is, but those late model CRTs often had a lot of digital circuitry that displayed a solid color on channels with nothing on them. Unless there was a much older CRT around, they never would have seen it.

  • dual_sport_dork 🐧🗡️@lemmy.world
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    Tube TV’s remained in common service well into the 2010’s. The changeover from analog to fully digital TV transmission did not happen until 2009, with many delays in between, and the government ultimately had to give away digital-to-analog tuner boxes because so many people still refused to let go of their old CRT’s.

    Millions of analog TV’s are still languishing in basements and attics in perfect working order to this very day, still able to show you the cosmic background, if only anyone would dust them off or plug them in. Or in many retro gaming nerds’ setups. I have one, and it’ll show me static any time I ask. (I used it to make this gif, for instance.)

    In fact, with no one transmitting analog television anymore (probably with some very low scale hobbyist exceptions), the cosmic background radiation is all they can show you now if you’re not inputting video from some other device. Or unless you have one of those dopey models that detects a no-signal situation and shows a blue screen instead. Those are lame.

  • Screen_Shatter@lemmy.world
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    I bought a plasma in 2009 that would show static if I turned it to cable channels without cable plugged in. Plasmas were susceptible to burn in and since I would game a lot I could see health bars etc start to burn in after a while. Whenever that would happen I would turn it to the static screen - making each pixel flip from one end of the spectrum to the other rapidly like that would actually help remove the burn in.

  • Aceticon@lemmy.world
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    By the way, the picture illustrating the post isn’t actually displaying the real thing - the noise in it is too squarish and has no grey tones.

    • Wolf314159@startrek.website
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      TV static in recent movies and shows that are set in the past almost always instantly pull me out of the narrative because no one seems to be able to get it right and some are just stunningly bad. It’s usually very subtle, so much so that I’m not sure I could even describe what’s wrong. Makes me feel old to notice it.

      • Aceticon@lemmy.world
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        I think the problem is because CRT displays didn’t have pixels so the uniform noise which is static was not only uniformely spread in distribution and intensity (i.e. greyscale level) but also had “dots” of all sizes.

        Also another possible thing that’s off is the speed at which the noise changes: was it the 25fps refresh rate of a CRT monitor, related to that rate but not necessarily at that rate or did the noise itself had more persistent and less persistent parts?

        The noise is basically the product of radio waves at all frequencies with various intensities (though all low) with only the ones that could pass the bandpass filter of the TV tuner coming through (and being boosted up in intensitity by automatic gain control) and being painted along a phosphorous screen (hence no pixels) as the beam draw line by line the screen 25 times per second so to get that effect right you probably have to simulate it mathematically from a starting point of random radio noise and it can’t be going through things with pixels (such as 3D textures) to be shown and probably requires some kind of procedural shader.

  • Krafty Kactus@sopuli.xyz
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    Dude I was born after 2000 and this is firmly planted in my memories. Maybe people born after 2010 haven’t but 2000?

  • 9point6@lemmy.world
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    No one in the last 25 years has ever seen it.

    I mean you can still find a CRT today and turn it on if you like, they’re less common for sure, but they’re still around if you’re looking for one

      • 9point6@lemmy.world
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        Well that’s a lie, I know an early 20 year old who’s into retro games and has definitely been to an arcade with CRTs in the past year or so. It’s not a stretch to imagine he’s seen static on one

        • Possibly linux@lemmy.zip
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          I had three different ones growing up. The first 2 were black and white and the last one was color. All found on the side of the road.

          • urheber@discuss.tchncs.de
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            I find one every once in a while, on the side oft the road aswell, unfortunately some idiot usually sprayed graffiti on it for some dumbass Instagram post, or I have no room at my place ATM.

  • LANIK2000@lemmy.world
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    2002 here, we still had such a TV. For quite a while actually, since we never upgraded and just started using phones and computers instead. It became my console monitor.

    • Fredselfish@lemmy.world
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      Yeah OP full of shit. My three sons all born after 2000 have seen this. Hell my flat screen will show snow if I turn it to antenna and there nothing for single to pick up. Also I have console tv for our old gaming systems so they seen that as well

      They also know how a vcr works and what a payphone is. We are not that far removed from that technology. Hell my middle son 17 has a record collection and cds. Also we have the cassette audiobook version of Stephen King Dolores Claiborne.

      • piccolo@sh.itjust.works
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        Modern Tv project fake static when there is no siginal because of fimilarity. OTA broadcasts are all digital, either you get a siginal or you dont.

        • Car@lemmy.dbzer0.com
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          Some TVs may project fake static.

          Just because OTA broadcasts are digital doesn’t mean you are stuck with all or nothing. You can definitely have poor signal and see or hear something other than what was intended. Doesn’t manifest as analog static, but depending on your decoding and error correction schemes, you can have cut audio, frozen frames, iframe inconsistencies, and stuttering.

  • calm.like.a.bomb@lemmy.dbzer0.com
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    The sky above the port was the color of television, tuned to a dead channel. - William Gibson, Neuromancer

    One of the most beautiful opening lines to a novel.

    • TranquilTurbulence@lemmy.zip
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      If you remember that it was written in 1984, the color is obviously black and white static. If you don’t think about the year, you might be lead to believe it is blue.

      • superkret@feddit.org
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        This is it:
        “It was a dark and stormy night; the rain fell in torrents—except at occasional intervals, when it was checked by a violent gust of wind which swept up the streets (for it is in London that our scene lies), rattling along the housetops, and fiercely agitating the scanty flame of the lamps that struggled against the darkness."

          • superkret@feddit.org
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            “She strutted into my office wearing a dress that clung to her like Saran Wrap to a sloppily butchered pork knuckle, bone and sinew jutting and lurching asymmetrically beneath its folds, the tightness exaggerating the granularity of the suet and causing what little palatable meat there was to sweat, its transparency the thief of imagination.”

  • Ferrous@lemmy.ml
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    That’s not background, that’s a free channel that showcases a polar bear in a snowstorm.