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

  1. The tip to "run the hot water on the sink first" idea really helped at my old place. The distance from the water heater to the dishwasher was significant, so it never got hot input.
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  2. as a future engineer. i will refer to my coworkers as “my fellow engineers”
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  3. It's a meta-format-war!
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  4. YouTube DEFINETELY needs to add Audio Descriptions for viewers who are legally blind or visually impaired. James Rath (a YouTuber who is legally blind) started a campaign a couple of years ago called #AudioDescribeYT. Everyone, please bring this to YouTube's attention as much as possible because I would love to see a difference made to make YouTube more accessible for the blind. Also, no offense to Alec but there are a couple of things in this video that annoy me; one is the "There's no place like 4K! There's no place like 4K!" part. While it is a clever line, it truly annoys me because I HATE The Wizard of Oz. In addition, people who are deaf or hard of hearing (I'm not one of them) much prefer the terms "D/deaf" and/or "hard of hearing" instead of "hearing impaired." Look at the subtitle options on Pixar Blu-rays and DVDs (as well as Wiggles DVDs--yes, the Wiggles) and you'll notice that they note the subtitles as "English for the Hearing Impaired." That should be changed to "English SDH" or "English for the Deaf & Hard of Hearing." I'm also teaching myself sign language (mainly ASL or American Sign Language, since I'm Canadian and there is no official CSL as far as I'm aware) so if I ever get a chance to communicate with a person who is deaf or hard of hearing, I'll be happy to talk--I mean sign, with them. The part of this long paragraph about subtitles isn't my opinion, btw, it's based on some things that I've heard from people who are deaf or hard of hearing in other YouTube videos. And Alec (if you're reading this), Please feel free to pin and love this comment just to bring it to everyone's attention so they can yell at YouTube in any way possible about this problem that is unfortunately still a thing on this site. I swear to God, I'm not just asking for you to pin and/or love this comment just because I made it on the same day that the video was posted and/or that I'm a big fan of your channel. However, it truly baffles me about how little YouTube cares about this. Look at iTunes and Netflix. They've already implemented Audio Description (or sometimes called DVS or Descriptive Video Service) features into their players, as well. So come on, guys. Let's get with the program. (And yes, I am a big fan of this channel and remember some of Alec's awesome catchphrases from one or more of this channel's previous videos). And I remember from a previous video that I would also LOVE to see a video going more into the follies of the DVD and Blu-ray discs, please. It would just be my dream. And, as always, thanks for watching. Sincerely, William
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  5. Ok but let's be serious Alec, THANK YOU FOR LETTING ME KNOW ABOUT < AND >. I was always so annoyed having to guess when to pause to catch 1 frame jokes in videos!
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  6. Not qulified but, Basicly that driver in that filiment style bulb. Is likely a capacitive dropper ( capacitor used like a resistor with out the heat) that limits the current then is rectified. And if your lucky is also filterd with a small cap. But liky you said not a big enofe one. The schmatic in the wiki is what most of theses style blubs use. Just replace the parts after r3 with a string of leds.https://en.wikipedia.org/wiki/Capacitive_power_supply The other option that is unfortnatly becoming popular is a small chip from china that switches leds on in series. So wheen the ac wave is at say 6v it switches 2 leds on thenat 50v it switches say 15 leds in series, till all the leds are in series when it reaches 120v. It flickers relly bad but its incredably small, and very effecent. Thers also classic ac to dc power supplies (like your laptop or phone charger) but there not very comon in bulbs due to size, they are more relaiable though. Theses guys make most of the chips you will see in led bulbs or there clones. http://www.bpsemi.com/
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  7. Early DVD drives were dual-laser as well (one for CD, one for DVD). I think Sony developed a single laser that could do either? It probably has something to do with variable focus but I don't know too much about it. I just remember reading stories in the 90s about drives coming out with a single laser that could do both CD and DVD.
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  8. Hi! I totally agree with your point(s). I live in Italy, in a rather cold northern area, and I was one of the first—if not the first among those I knew in 2017—to have a gas-free home. All my heating is done with a heat pump and—until a few months ago—with thermal solar panels. Interestingly, I also own a small IoT company, which has allowed me to gather a lot of data on how my heating system works and adjust it to meet actual needs! Unfortunately, many professionals either don’t know or don’t want to get into such detail, leading to many mistakes in installing these systems. If you’re interested in what I’ve discovered over the years, feel free to contact me privately! Thanks for the fantastic video, as always!
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  9. This is relevant to my interests.
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  10. I suggest that you take a look at this video by slow mo guys : https://www.youtube.com/watch?v=3BJU2drrtCM It show exactly how the electron beam is working on a old TV.
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  11. It is all about efficiency. As a single power station can produce a greater amount of energy with the same amount of fuel, it makes no sense to continue wasting fuel in millions of smaller less-efficient engines. This is before we even touch on the fact non-fossil fuel based power sources exist. These vehicles are over-coming the real limitations holding them back, such as more efficient engines and battery arrays, so the cost difference between the two is only going to increase. As for the fact electric vehicles are still uses other oil based products... irreverent. That petroleum products are present in both makes this argument a 'null point' at best, all you can do is prove they consume the same amount of petroleum. Not only that, but this is an argument your opponent can easily hijack to strengthen their own side. All it would take is removing a single line from the comparison, such as connecting the vehicle to a green power network and removing 'fuel' from the equation.... So I really wonder why 'point and laugh' at others willing to take advantage of this increased efficiency?
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  12. My wife bought a 16A 220 charger for her volt (with a nema 6-20 cord) a few years ago and even with only being 3.5KW thats been FINE to keep her car topped off here and there AND also charge my VW ID.4 which I got 6 months ago. Even with that surprisingly low 3.5KW power output - I only bother plugging it in once every few days and when its done I just pop the cord back in my wife's car. Sure, I can't charge from 0 to 100 in a single night's sleep, but i'm more commonly charging from 40 to 80 which it has no problem doing if its plugged in from when I get home from work to the next time I have to leave the house. I won't pay an electrician to come re-run higher gauge wire to be able to install a beefier plug, thats basically a waste at this point. What I will say is that 220V 16A is plenty, 110V 12A is NOT for a couple reasons. First off, its less than half as fast as the 220V charger we have, second off some of the power drawn is wasted on keeping all the electronics in the car on. Thats not a big deal when you have 3.5KW but a major problem when you've only got 1.3KW and the car "idles" at about a 400W draw. The charge rate ends up being more like 900W vs 3100W. Too slow.
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  13. 16:30 Let me help you with that mystery! It's easier to cut shapes and print on the vinyl while retaining the reflectivity of the object you are making. The ink favors the divots the hexagons make, and the reflective vinyl is very thick and stiff. the hexagons make it easier to both cut it, and wrap it around an object.
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  14. Right after watching your other videos on dishwashers, and their detergents, I followed your suggestions. Made a huge difference and been having clean dishes since.
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  15. I had no idea that there was controversy and contention regarding the utility of CFLs, but that's another reason why this channel is fascinating lol
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  16. I honestly love the flow of this video.
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  17. A computer can not find out, therefor a computer must never fuck around.
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  18. I bought my first EV, an Ioniq 5, about 4 months ago (Thanks in large part to your videos explaining it so clearly) My commute is 140 miles a day and the level 2 charger in my garage is more then enough to replace energy I use everyday.  Going EV is saving me about $350/Month when compared to my Hybrid that gets about 40mpg. My wife drives my old Hybrid during the week and the EV on the weekends. She drives so infrequently that she only has to fill up once every 2 months or so. EVs are very practical and once the prices and availability start to become competitive it will really start making a lot of sense for most families.
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  19. Welp. I thought I didn’t like my dishwasher. I watched this a couple days ago, and now, applying what I have learned, I like my dishwasher.
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  20. It does look like the Warm Glow bulbs are not California Title 20 compliant. I used to be able to get them here, but not anymore. It could also be why they are being discontinued. Edit: bingo, the warm glow r20 has a CRI of 80. California mandates a minimum CRI of 82.
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  21. I am SCREAMING at anyone who will listen, well, just anyone, that ALL NEW CONSTRCTION (retail, commercial, residential, industrial, etc) must have accommodations for EV charging. Space in the panel, conduit run (tubes for wires), lot space for BEV's, mounting posts if needed, and transmission lines all in place. It will be far easier to install and maintain than a digging holes and ripping walls to install after the build.
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  22. Technology Connections Another great vid. ;) I think the main reason for using the IR laser for playing CDs is because the digital EFM style decoding used for the PCM track on Laserdiscs is pretty much the same as is used on audio CDs. This let them re-use the same chipset and signal path for the CD playback, and then just kind of bolt-on the MPEG-2 stuff for the DVD decoding using the separate red laser. That's my best-guess, and kind of makes sense, since the EFM decoder used for the PCM track on Laserdiscs was essentially just a re-purposed CD audio decoder to begin with. I think it was also cheaper to use the IR laser for playing CDs as well. Using the red laser requires more accurate tracking and focussing AFAIK. On later players, they started integrating the LD + CD + DVD playback into more custom ASICs, which further reduced the costs and overall complexity. Also, the IR laser was already used in the Laserdisc + CD player combo players as well, so it possibly confirms the theory about the "bolt-on" DVD thing. (keeping the IR and red laser pickups separate meant that they could literally just add the DVD playback board with a direct connection to red laser on some earlier LD players. Less complex switching circuitry to mess with, and they then just had to switch the video and audio signals instead.)
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  23. 44:11 you could say that, through the magic of buying two of them, you were able to prepare one set of trays while waiting on the other.
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  24. 13:00 Jimmy Fontanez - Floaters?
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  25. It's probably because the tape moves at a constant speed. That means the spin rate of each spool will depend on how much tape is currently on the spool. More tape on the spool means a slower spin and less tape means a faster spin. Or, put another way, as the circumference of a circle increases, you need a progressively smaller fraction of the total circumference to make up the same length.
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  26. Don't be a fun sucker.
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  27. 16:30 “one of my favorite contactors” I doubt that phrase is spoken very often 😂
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  28. I've been driving EVs for years, our house has been multi-EV since 2019, and just bought my fifth EV that replaces our final ICE vehicle (yay electric pickups!) but even being heavily invested in EVs for years, this still contained good info. Connecting the Technologies even for people who already know, thanks for the great video!
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  29. I hope someone starts installing the outlets diagonally so a sequel video can be made here.
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  30. The turn signal video is the one that brought me to the channel forever ago! So happy to see another one about a similar topic!
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  31. 5:14 "Give him a left, you big lug!"
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  32. Yeah, I guess it "feels" kind of dirty to make the signal go through so many devices, but when you think about it, it's digitized on the first one (unless you try to digitize the sound on the second one later, but either way this applies) so you'll only ever degrade the signal once - and considering the quality of the de-interlace, upscale and color rendering, as well as factoring in the cheap cost, it definitely looks like the best bang for your buck right now, to the point where expecting better probably indeed is a fool's errand.
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  33. You see children takes off glasses Hello. In the old days...
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  34. Thanks! I hadn't even thought of this, given that my desktop was driving three 4k monitors, a couple more regular monitors, and storing a couple of TB of data. But when I looked at my laptop (XPS 9520), it had comparable specs. I added 2 TB of disk and now my primary day-to-day computer and primary mobile computer are one and the same. It's been working great for 2 weeks now.
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  35. what in the world am I supposed to do with this timbreine now....
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  36. Hey. My closing credits gag tagline actually fits the video topic for a change.
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  37. I live in a full electric house and I learned a lot from this series!
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  38. Thanks! Sorry I'm late with this, I talked about a Thanks! months ago. I found the Pinball series absolutely fascinating. To see what was possible with switches, relays and, a lot of wire. Appreciated you showing us how you traced it out on the schematics.
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  39. So lucky for you all here I just had a lecture on magnetism and still have my notes out (if you care to read it) - Within a bulk mass of magnet there are domains, areas with the same magnetic moment. - Magnetic moments derive from the atomic structure and is beyond the scope of this youtube comment. - Senseable temperature is actually the rate of the random motion of particles in space. - At the Curie temperature (Tc), the energy it takes to move the orientation of a domain is equal to the energy whithin that random motion. - Above Tc, there is enough energy for the domain orientations to be scrambled by random motion. - For a magnet, all the domains must point in the same direction. The interesting thing is that in order to realign the domains, a magnetic field must be present while it cools down. I suspect you would have picked up the presence of a second magnet (electromagnet?), so I suspect there is something more complex going on where the magnet doesn't completely scramble. I might have to ask my lecturer, though he probably won't know either. Some bonus facts: - Above Tc, the material acts like a paramagnet. - A paramagnet is basically what we would call something magnetic but not a permanent magnet. - Ferromagnetic materials have the magnetic moments (at a atomic level) pointing in parrallel and add together - Antiferromagnetic materials have the magnetic moments pointing antiparallel and so they cancel out. - What we call permanent magnets form when atoms switch between domains in a process called Magnetic Hysteresis.
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  40. For what it's worth, I took your advice from the first video and my dishes are a lot cleaner now. I have the hardest water, so even if I'm not washing the most soiled dishes possible, I will still add some detergent along with the little pack thing. It works wonders.
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  41. Unless my brain is malfunctioning again, debounce (via circuit or code) is dealing with switches which do not make/break cleanly. So the opposite of what you said there ;) Still, love the vid. Super simple topic, but one lots of folks never really think about. BTW: The most interesting contactor I've ever heard of (I actually saw it) was the switch for a research rail-gun at UT Austin. It was two big slabs of copper on heavy rails which were shoved together (with springs IIRC)... carried massive amounts of current at quite high voltage. The insane part was the mechanism to break contact though: It had a groove on the contact face of each copper plate with explosives (a variant of plastic explosive). The "off" button literally blew the contacts away from each other. Science is fun :)
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  42. You say that you'll know what it was like if you're over the age of 30, but there are a good number of late gen z people who had the same experience starting out. Im 25, and got on the internet when i was 7 in 2007. I used the internet by google searching, bookmarking individual websites about my interest, and then alternating between them and further searching. Wikipedia has been a massive part of my online life since 2007. It really wasnt until the very early 2010s that this started going out the window with social media and youtube. By then I was old enough to notice the change and resist it long enough to retain my internet research habits while also submitting almost entirely to the YouTube and Reddit algorithms for entertainment.
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  43. Instead of simplifying, you should have taken a page from 3blue1brown and delight us with all the math that goes with induction motors including back-EMF as they speed up. Another thing worth mentioning about all these motors is that they typically use the airflow they generate for their own cooling. It's yet another reason why a startup stall is extremely undesirable.
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  44. "Don't believe me?" I wanted to say "ask the dishes" so baad
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  45. These tips really helped on the last set of videos. to add make sure your drain line is installed correctly. it needs an uphill and downhill section to drain correctly. Ours was wrong and causing food particles to flow back into the dishwasher.
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  46. I am very happy that you put the dishwasher on the table.
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  47. I was not expecting the humanitarian aspect to the video thank you for that.
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  48. Here you are talking about a simple 120V receptacle and my parents’ house has a 240V dryer outlet (3 conductor) that was installed upside down. They have a zip tie holding the cord up so it won’t back out. Now that’s dangerous!
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  49. I agree with you, it's way easier to just see yellow and know that someone is going to turn than to have to wait and concentrate on the tailight for a bit and figure out if the car is turning, has the warning lights on, or is braking very frequently
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  50. I definitely agree with your "spicy" take. I don't understand why these charge stations aren't made to mimic the functionality of something so tried, true, and familiar to the userbase.
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