Hearted Youtube comments on Technology Connections (@TechnologyConnections) channel.

  1. You DO realize that with proper protection everywhere, my channel won't be able to operate, right?!
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  2. It's nice to see angry dishwasher man happy.
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  3. What I’m hearing is that the most expensive microwaves have a built-in Clapper.
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  4. cracks knuckles Chemistry expert and former detergent chemist here, chiming in. Modulo some small semantic differences, you're 100% spot on. Functionally, there is zero difference in the formulations. Every powder dish detergent on the market comprises the same functional components, though the exact chemicals selected may vary. It's always some combination of detergent, anti-deposition agent, water conditioners, strong base, oxidizers, enzymes, buffers, "processing aids", and what I call "foo foo juice" - colors and fragrances. The Purpose section is annoyingly vague so I'm going to break down each of the categories and give their examples. These aren't strict categories, in fact many of these chemicals perform double or even triple duty. Detergent/Surfactant - Allows water to bind grease molecules by virtue of having two halves, hydrophilic (water loving) and hydrophobic (water hating or grease-binding). These can be basic/anionic (negative charge): sodium lauryl sulfate (SLS); neutral: isotridecanol ethoxylated, PEG C10. Acidic/cationic (positive) are uncommon in dish detergents but you may see them in rinse aids. Bonus fact: rinse aids are typically mild acids ( pH about 3) which helps dissolve calcium deposits and soap scum. Because of this, they have to use neutral or cationic surfactants. Anti-deposition agent - Once you dissolve the grease, you don't want it to deposit back onto the dishes. Cascade calls this "boosts shine" but it's basically film prevention. The line between detergent and anti-deposition agent is blurry, and many chemicals can fulfill both roles. Acrylic copolymers are the best example here, but the PEGs (polyethylene glycol) also help in this regard, as do any neutral detergents. They tend to be weak detergents on their own, but their big advantage is they don't create soap scum (calcium fatty acids, more on that later). Water conditioners and chelators - Hard water means calcium, iron, and other large positive ions in solution. Calcium reacts with anionic surfactants (aka soaps) to form insoluble scum. This both reduces cleaning power and makes extra goop that needs to be cleaned! Water conditioners exchange sodium for calcium, binding it so it doesn't form scum. This category includes polycarboxylates, citric acid, sodium phosphate (discontinued), EDTA, and our friend sodium acrylate/maleic/carboxylate copolymers again (yes it doubles as both anti-deposition and water conditioner. Synergy!). Strong base - Anionic detergents work best at a high pH (alkaline/basic). Alkali also saponifies grease, giving it a hydrophilic group and turning it into soap! Lye (sodium hydroxide), bleach (sodium hypochlorite), sodium percarbonate aka sodium carbonate peroxide aka "OxyClean", sodium silicate, and sodium phosphate are all strong bases. See all that sodium? They also help condition water as well! Oxidizers - These react with staining molecules such as tomato sauce, berries, tea, and coffee, as well as natural polymers like proteins (cheese) to break them apart. Sodium hypochlorite and percarbonate are oxidisers. "Transition metal catalyst" has a similar role, except instead of being consumed, it facilitates the bleaching action. Enzymes - Starch and protein when heated and hydrated form a natural glue of sorts. Anyone dealing with stuck-on cheese or rice knows what I'm talking about. Enzymes are natural molecules that break these polymers down so they unstick from surfaces. Amylase specifically digests amylose (starch) and Subtilisin (protease) breaks down protein. Pro-tip: any time in biology you see whatever-ase, that breaks down _whatever_. Buffers - prevent the base from being too basic and etching glassware. I think this is what zinc carbonate is doing, but I'm not 100% sure. Processing Aid - Any time you see "processing aid" or "enables liquid processing" - that just means it's an inert bulk transport, because either the active ingredient is too viscous, or cakes easily, or whatever. Glycerin and Dipropylene glycol act as liquid solvents in those colorful liquid sections of the gel packs, since too much water would dissolve the pack. Sodium sulfate is just an inert powder.
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  5. Some clouds are worth yelling at 🗣☁
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  6. Alec really loves the "box that makes things hot/cold wet/dry" genre
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  7. We're so sorry everyone! 😭 We've ruined one of our favorite holiday traditions: watching Alec meticulously paint mini bulbs and become endlessly frustrated by the vape-shop inspired holiday madness! On a more personal note: I cannot thank you all enough for your incredible support. Only hours in, and the response has been nothing short of unbelievable. We are truly and forever grateful to each and every one of you. To all the nitpickers, those who provided feedback, shared pictures, and left comments—your input means the world to us. We couldn’t improve without your thoughtful suggestions, and we value each and every one of them. Cheers to the warmth and magic of Christmas!
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  8. Ohh jeez, THIS thing. Totally had one in our household and friend's households in the late 90s/early aughts 😄 It had the unintended side effect of putting increased emphasis on language, so my buddies and I constantly found ourselves more focused on deciphering what was actually being said anytime it muted. We learned all KINDS of colorful new language as a result that otherwise may have passed by without much thought. Thanks TV Guardian, you piece of ' crud. Wow.
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  9. One extra thing, the dedicated air fryers exhaust a lot of air while a convection oven recirculates the same air. This makes the air fryer dryer and crispier.
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  10. Brighter and goopier than I could have possibly imagined.
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  11. I’m an automotive lighting, safety engineer, and just shared this with my team. Keep up the good work 😇
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  12. "So now its a permanent not magnet" Oh come on, you totally missed the opportunity to call it a Magnot
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  13. mmm, "Unknown Artist", allegedly best DJ in 2000s, everybody had one of his tracks somewhere
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  14. I bought a swamp cooler and it's awful. My swamp is still as hot and humid as ever.
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  15. I worked for 9 years back in the 1970's as a sound engineer in a film laboratory. I spent many hours recording optical sound tracks for 16mm film. As for the nice dark track on the prints; the film processor had a thickened developer that was applied to just the sound track area by a narrow wheel. This allowed the sound track area to retain the silver and make a nice dark track. The same was done for reversal films. It was important to have the track be as sharp as possible. While recording the sound negative, some of the light would scatter into the unexposed area. The same would happen when the negative was printed onto the final print. We would run exposure tests to get this effect to cancel and leave a nice sharp sound image on the print. If it was wrong, noise and intermodulation distortion would result. Another point you many notice is that the slits narrow down during the quiet parts. A DC bias was placed on the galvanometer to keep it as narrow as possible for quiet sections and then open up for the louder parts. This greatly reduced the film grain noise during projection. Great video as usual.
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  16. People forget that insulation works both ways, gets pretty crazy hot in Scotland these days but still cool at night so I open my windows at night and close them in the morning to hold onto the cool temperature during the day
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  17. >A computer cannot be held responsible! Companies: Yes! Isn't that great?
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  18. Optical amplifiers work on a very simple principal: they make the light louder.
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  19. A–A steamed hams reference?! At this time of year, At this time of day, In this part of YouTube, Localized entirely within the Technology Connections Freeze Dryer video?
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  20. The length of sigh I released when you said "RG-bees knees..."
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  21. I remember when my teleprompter broke. I was speechless.
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  22. I’ve been pestering Alec to make a video about this for ages! So happy to see it!
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  23. I swear one of the best parts of growing up is being able to tear apart stuff without being yelled at
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  24. If it's not absolute zero there's some energy. Let's steal it!
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  25. If you've ever lived in a house that had awnings and then had them removed, you learn quickly why they were installed in the first place.
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  26. Truckers can see the reflectors just as well. They "fade" sooner though, but it's not an issue since they've served their purpose at that point. (Source - me: trucker for 6 years) Fun fact - a lot of road paint also has glass beads in it in order to create a reflective surface. (Source - me: road painter for...about a month) (edit... Oh... You covered that...I commented too soon. I should have known you'd cover that... Ok :)
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  27. That style of LCD display is known as a negative mode LCD.
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  28. People in my apartment complex always let the hallway doors slam shut and my dog barks every time. Just took a screwdriver down the hall and fixed this. Thank you!
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  29. Your channel is why I work in hvac now instead of being like homeless or dead or something. Thanks for that!
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  30. "I've always had a fascination for these" The entire basis of this channel and it's fantastic lol
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  31. I love how your videos range from "I'm really bothered by this very small design issue in this very specific product" to "Many people may die because engineers are lazy"
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  32. For my final in my high school speech class I demonstrated making pancakes right in the classroom. To do this I brought in a (rather modest) countertop griddle and, to reach the wall outlet... a flimsy brown extension cord. I didn't think twice about it. ...until partway through the demonstration-speech there was a flash of light as the cord literally melted away from the plug in the wall. We had to get a maintenance guy to come safely remove the now-bare-wire plug from the wall outlet. (He also brought a (better) extension cord, I finished my speech, and got a 99%. And the class got sample pancakes. :)
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  33. It's a shame this wasn't invented by Pioneer. They'd have figured out a way to make it play Laserdiscs, too. :)
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  34. YOU FOOL! That isn't a Cat5 cable, it is a Cat5E cable.
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  35. I used to be a "handwash only" guy, because I was ignorant of how the magic box in my kitchen worked - but your original video showed me the light. Now I throw everything in the dishwasher, buy the cheapest powder, and everything comes out perfect with only 10% of the effort. Unironically life changing advice here people.
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  36. Great video. Really pulled out all the stops for this one.
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  37. Brown? More like dark orange, amirite?
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  38. "The magic of buying…three of them" You've betrayed me
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  39. “Oldest not-book object I’ve held” Rocks: “Am I a joke to you?”
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  40. Otis elevators had touch sensitive call buttons that relied on capacitive coupling through humans to ground to trigger a neon filled tube that acted as sensor, latch, switch and indicator.. Way ahead of its time, and quite complex as a result.
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  41. As a father, I now wish I'd sent my daughters to piano lessons. Electronic pianos have headphones... violas and flutes do not.
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  42. "For this, we'll need a toaster." Alec you have a problem. Please admit it.
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  43. I'm impressed that Alec made it thru an entire video about a device with a refrigeration unit without once explaining what Latent Heat of Vaporization is.
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  44. I won't bore everyone with the saga, but trying to find an actual pro HVAC installer in a major market that understood this stuff and was willing to work with me took over a year and too much of my life energy.
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  45. "Level 1 is good enough for many people who need 40-50 miles a day, unless it's really cold where you are." Has been my unpopular opinion forever, and I'm so glad to see you address it so well.
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  46. If I am interpreting this correctly: Aesthetically, Tinted Incandescent Christmas lights feel like plucking the A string on a guitar. Monochromatic LED Christmas lights feel like playing an exactly 440Hz square wave out of a piezoelectric speaker.
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  47. that internet pun was so painful, it hertz
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  48. I love flicker flame lamps. But on 240V the resistors in the bases of ours dissipate a lot more power and get fried. I found that by adding a 100nF capacitor in series it reduces the base temperature while still giving good flicker. A generic eBay flicker lamp with shiny metal electrodes didn't last long.
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  49. 15:16 "It's not like awnings don't come with any drawbacks..." Indeed. Many awnings can be drawn back during the winter months to let more heat energy in, and let you enjoy the sight of a beautiful winter day.
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  50. I'm Chinese and I use wok for cooking an awful lot. The truth is for family use a regular induction cooktop coupled with a flat wok (yes these things exist) is quite enough. I've been using induction stoves for well over a decade now and I use it INSTEAD of a traditional gas stove whenever and wherever I can. It's efficient, it uses clean energy, it doesn't produce excessive heat, and most of all I don't have to worry about fire hazard or gas leakage. Also these things are incredibly cheap (at least in China). For a standalone cooktop it's usually no more than 50 US dollars (converted from Chinese Yuan). I currently work abroad and I took one with me, love it.
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