Hearted Youtube comments on Technology Connections (@TechnologyConnections) channel.
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Terrific video as always, just wanted to add a few insights which might be helpful.
First off, I'd love to see you discussing telecines in a bit more detail, especially as that is something that was used for longer than people might expect: even into the late 80s/early 90s, the BBC was using their own film prints to show episodes of the original Star Trek and transmitting those live onto television. This also meant that those airings included the same censorship that was applied when first broadcast in the 60s. Of course, the problem with this is most apparent with the infamous screening of one episode where the film literally came apart in the projector at an edit point (the BBC would often remove the pre-title sequence and re-edit to after the show's title sequence). This telecine process also resulted in a number of films having to be presented with live pan-and-scanning on the part of the operators, which... yeah, you can imagine how badly that went, and you'd have two noses chatting in front of a wall.
The comment about 16mm only needing to be done at 720p isn't strictly true: a lot of low-budget horror films were made in that format, and companies like Arrow have done incredible restorations at 4K and 2K resolutions, even if they obviously don't have quite the same level of detail as those shot on 35mm film.
The thing that holds back shows made on film being restored in HD is that it is still an expensive process, which is only just now becoming cost-effective for second-run channels and streaming services hungry for HD - the main outlet for these was Blu-ray for many years, but people don't buy TV shows on Blu-ray, and that was why Next Generation was restored when others weren't - not enough people bought them. But more and more shows have remastered, largely from a company called Illuminate Hollywood, who have developed a partially-automated computer process that matches the original film negatives to their video-edited counterparts. They were the company that did remasters of shows like Baywatch, The X-Files, Pee-Wee's Playhouse, and more. But even so, it still requires human consideration - but sometimes not enough, as shows do have things like missing effects, particularly day-to-night filters. Buffy the Vampire Slayer is the worst example, full of careless mistakes and gaffs as part of the HD remaster including wrong takes, framing, and so forth. But even so, this is still very expensive to do, and has to be done on properties that would turn profit from such a thing.
Sorry for the long comment, got a lot of info.
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How The pump directs water to top and bottom:
Granted I didn't read every one of the currently 11,819 comments but I can't believe you didn't actually do any research to figure out how the machine switches between the top and bottom wash arms. There's a small ball just past the impeller that directs the water either up or down. When the washer first starts its cycle, the ball is in a neutral position, the pressure of the wash water pushes that ball against the outlet that leads to the hose going to the top spray arm. its not a perfect seal so that tube does get some water pushed up, but not enough pressure to do any good.
The motor will shut off for a split second, when it does that, the water rushes back down, forcing the ball to the outlet that runs the bottom spray arm. The pump is timed just right to activate while this ball is in that position and its pressure holds it there now keeping the lower arm turned off and allowing the water to flow to the top arm. By varying the off time of the pump, the machine can constantly switch back and forth between the upper and lower arms reducing the need for more powerful motors and less water. To run both arms at the same time would require considerably more water, more water pressure, a bigger pump and overall more energy and be less efficient and louder.
Interesting video over all though.
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