I’ve just come to the comments to talk about Celsius’ sweet lips. I see I’m not the only one! You folks are good people and we would hang out and be BFFs!
Thermal switches in blinkers typically have the resistor and bimetallic switch in series, so the light goes on immediately when you turn the blinker on and turns off once the resistor heats up enough. Also thermal switches in blinkers slow down when a light bulb burns out, as the current through the resistor decreases and it takes longer for it to heat. Relay based blinkers usually speed up when a bulb burns out. And the rate change isn't an accident, it is there so the driver notices when a bulb burns out.
It will speed up. Thermal inertia plays a role in it. If you have 2 bulbs on and send more power though the strip, you end up with more hear stored in the heater and the strip and it goes a bigger distance. If you have less heat, it will open less far apart and cool faster too. I get your logic with the slower turn-on, but tell me, how would it cool down slower and turn off slower if you had less power and thus less heat though it with a single bulb? The thing speeds up.
@@airgliderz Say you have 2 bulbs at 1 ohm in parallel and one blows the resistance goes up (from .5 to 1), unless car blinkers are wired in some wierd way then idk.
I gotta say, you earned my subscription. Your format is direct, factual, and well rounded in general. You answered pretty much every question I had about thermocouples, and bi-metallic switches. Thanks for your hard work!
hi, im a power plant control room operator. i know alot about what this video is based on and i think it may be the best demonstration of the physics involved that ive ever seen during my schooling. bravo, you got a new subscriber.
As a Materials Scientist let me add to what you note. A lot of phenomenons can be shown as a physicl representation, just like chemicals can be used to demostrate natural ideas. Teaching science to kids one uses anyway to show a phenomenon. This video shows the simple ways that are employed to make things work. Technologist use the understanding of material properties to our benefit. Series like "THE Secret Life of Machines" explains concepts further. remember most things operate on simple ideas.
As a software engineer, the thought of replacing analog mechanical controls with sensors and software terrifies me. The question in software engineering is "what happens when we screw something up?" not "what happens if we screw something up?"
If we are mentioning heat uses on metal, wheel bearings on solid axles (possibly but unlikely wishbone) need to be put in the freezer so they shrink and can fit into a wheel hub. I'm assuming a wishbone doesn't ever need to be chilled is because conical bearings are cone shaped ∆ and self align. This is from my single experience doing a 1976 Fiat 124 bearing and hub job.
Yup. The ring gear on flywheels are sometimes installed by heating the ring gear, placing it on a cold flywheel, and then letting it cool and contract.
Perhaps the video title should go something like, "The thermal mechanics of thermostats". I would still like to see a video about thermal manufacturing
Humorous, but it's true. Too often, people will remove a fail safe circuit and replace it with either nothing or something they created that does not work. Lots of houses have burned down because the homeowners messed with their water heaters not knowing what the hell they're doing.
Automotive cooling systems are pressurized around 14-16 psi raising the boiling point an extra 45 degrees. I enjoyed the video I just wanted to offer this information to you.
@@rogeronslow1498 Simple check on Google tells us that radiator additive concentration can increase boiling point to 121deg C to 125 deg C. As a Material Scientist I like to keep to correct units mainly the Metric system.
An interesting use you didn't mention: thermal expansion is used to join gears, wheels and other rotating objects to shafts/axles. The wheel and shaft are made to slightly overlapping diameters, then the wheel is heated and expands and the shaft is cooled so it shrinks a bit. The wheel is then slid onto the shaft and when the parts cool down/heat up to room temperature, the wheel grips tightly onto the shaft.
This is incredibly cool! I took some beginner Electrical Engineering classes as part of my computer science degree, and knew a little about this sort of property and applications of it, but most of this content is absolutely brilliant stuff that I've never heard of before! Just watched a few other videos, and Definitely agree with another comment on here that the quality of this channel's content is up there with Kurzgesagt and Real Engineering. Fantastic!
Dude, your channel is great! You pack a substantial amount of information into these short videos, while still getting it across in a concise, understandable way. TH-cam's algorithm really needs to pick up on your channel already. You should have *far* more subscribers than you do.
Started watching your channel around a week ago and I'm absolutely addicted! You make some of the most interesting and best produced documentations on TH-cam! Keep going!
I noticed the music volume when you show your intro logo has been too high for nearly all your videos; it's always jolting, especially with headphones. For videos so focused on precision, I'd think you'd try to match the levels more. And honestly your intro music doesn't really fit how relaxing the rest of your channel is. But other than that I love the content.
I like the intro music and video music, perfect volume with headphones, phone or PC speakers. Dont change a thing, great helpfull, interesting, realistic, applicable to every day life videos. .
What an amazing video to show just how awesome these simple hidden little gadgets are that most people don’t even know exist and to show just how incredibly necessary they are in our daily lives, the ability to harness thermal expansion is truly incredible, well done, I love it!!
For machinery purposes of very tight component assembly you've forgotten the ''interference fit''. Cooling the shaft and heating up what ever goes onto the shaft.
Also missing is the analogue problem of Hysteresis (or lack thereof...). E.g. without designing in a type of 'dead zone', a thermostat would rapidly switch on and off wearing out not only it's own electrical contacts very quickly, but also the equipment used to perform the heating and/or cooling.
Really interresting video on a great channel! I really enjoyed the mix of live demonstrations, animations and historic images. Well done- I know how much effort that all takes!
@@lefr33man I'm subscribed to RE already (on my other account), and I love his content! Thanks for suggesting though! You're doing real good by spreading some channel names around.
50+ years on this planet and I never knew exactly how old school car flashers worked 🤔. Great quality content, this was my first video by you and looking forward to more.
61 here. I didn't know either. But there must be additional cleverness, too. Those flashers have to work on a freezing cold winter night in northern Alaska, but also on a sweltering hot day in sunny southern Florida. Somehow the limit temps have to follow the weather.
When I was like 13 I a family friend with an HVAC business showed drove me around and I learned a thing or two. One of the coolest things I will never forget is when I learned how the thermostat double metal coil thing worked based on temperature, and it bending into itself to become a switch. Something about it being such a simple concept really made me appreciate the modern world, where everything is so complex.
This is hands down one of the best channels in this field. Content quality and story telling is top notch! Keep up the great work! I honestly see this channel getting million+ subscribers! Good luck!
Really awesome video! Keep it up, and you'll be a big channel soon. The quality of the video and animations are really top notch. While your explanations are fantastic, with great pace and delivery too. 10/10.
I recently discovered this channel and started watching all videos from the beginning. And each and every video surprises me of how great quality it has. I really learned a lot watching this video. Thank you and please keep making high quality videos.
I've always wondered why the frequency of a turning light in the car variates with the variation of power consumption (watts) of the bulb you are using.. here is the answer! Great job
5 ปีที่แล้ว +1
I'm glad I found your channel. Your videos are really informative and high quality. Thanks for the great work and keep going!
Just one thing about those flasher units for motor vehicle turn signals. Where do you put the blinker fluid? Also, are these flasher units optional extras for BMW owners? :)
Nice stuff, haven't heard of some of the mechanisms yet. Something that I missed would be shrinking bearings, gears, couplings etc. onto shafts by heating the piece and maybe cooling the shaft. They then slip together nicely and after normalizing in temperature they clamp extremely tight together. In a similar fashion there are also heat shrink collets for holding endmills and other tools, there are even special inductive heating devices for inserting and removing the tools from the collet. They are really compact and stiff while also being very precise.
Generally, unless you have the extra equipment or need a really interferenced fit but are limited in heating the outer, cooling the inner is avoided because it will condense water out of the air and you'll end up rusting the parts. One workaround is using a purged box with something like nitrogen. Now there's no moisture in the air.
So glad I found your channel. It is the best there is. I saw a comment on another video that you also grew up watching modern marvels etc. That is exactly the niche you're filling. Mainstream TV ain't got shit on your channel. Thank you.
One of the best uses of heat control that amazed me is rice cookers. Because a magnet will fail once it reaches a certain temp you can pair it so it fails at 101 degrees. Because water boils off at 100 degrees it will only turn off once all water in the pot is gone (absorbed/evaporated).
I love your videos, you can tell you work really hard on them, you have so much information and you explain it so that it's easy to understand which is not an easy thing to do.
Whenever I change a hammer handle, I put the head in a 450° oven. The handle opening will grow in. 05" when hot. I then install the handle normally and when the head cools to ambient temp, it grips even tighter.
That is a great idea I will have to try it on one of my broken hammers. At that temperature is there any chance of scoring the wooden handle to a degree of notability?
Most thermally activated switches I've seen don't use a separate heating element, but instead rely on the current passing through the bimetallic strip to generate heat.
I always scratch my head when I find channel like this.. content is a pure gold but where the heck are subscribers? Hope TH-cam will stop hiding You so the numbers can start grow adequately to quality of this channel. 👍
Hey @New Mind, You have a great video with one glaring exception. The background music laid with dialog is too loud and is distracting from the pace of the piece. The voice of the narrator is good enough to stand on its own.
Isnt that the truth. I learn more from interaction with real world application of math and science. Want to learn math build something. My spelling is terrible but my math got a whole lot better when I started to build stuff. People used to learn hands on and many an invention came about by nessessity.
High School is just about teaching your the bare minimum to make it easier to be introduced to actually learning things. Thanks to school you are at least aware thermal expansion exists, you know how a thermometer works, you at least have an idea of what temperature actually means. You have a very basic level of knowledge like that, which is enough to be easily introduced to stuff like how a thermostat works.
Awesome video! I've never thought before how a dial thermostat works, but that makes perfect sense. If you happen to know, wouldn't that make the metal very brittle or build up thermal stress after enough exposure though?
Thanks! So short answer yes it does, but how much and how it affects critical bimetallic parts is a complex question, as it is determined by the alloys, the formed shape and even the method of bonding.
I always wondered why there were wires on propane heaters that have no batteries, nor electrical input, I saw a little dumb and imagine they’re being a tiny generator based on pressure within, the thermal couple effect is exactly what this is. Thank you for explaining this in a way, I can understand!
thermocouples don't use thermal expansion they use the thermoelectric effect. most electrical sensors (RTD, TC, diodes) don't use thermal expansion either. Missed the Sunbeam toaster, lowers the bread and raises it using thermal expansion.
That's why he said, at 10:50 or so, that "joining of two dissimilar metals for the purpose of temperature sensing can also take OTHER forms." He then elaborated on the thermoelectric effect himself.
One of the best examples of this is all of the expansion joints on the SR71 Blackbird. This engineering marvel literally leaked fuel while onto the ground and continued to leak while in the air until it reached high temperatures on its outer skin through high speed flight. There were expansion joints all over this aircraft. They figured this out without computers or calculators using slide rules by hand. To this day this aircraft holds the speed records it has achieved to this day. Amazing what people can do when they are faced with these huge problems that they face.
8:12 If a turning signal light fails, shouldn't the flasher circuit get less current and therefore flash with lower frequency? Why does it flash faster?
I was kinda expecting a video on 'Clever Uses Of Thermal Expansion' to be more than 12 minutes of basic info on thermostats - almost all of it on bimetallic types, which is the second most basic and commonly known use of thermal expansion (#1 being expansion of a liquid, e.g. in a mercury thermometer). The only thing I actually learned was about the wax-melting variant.
That frustration happens when you're not the target audience. As you pointed out that may be basic information, but to someone who never thought about termostats the video was perfect - and the title interesting enough for us to play the video.
@@GabrieldeOliveiraAzevedo Fair enough, but I expected 'Clever Uses of Thermal Expansion' to include a) more than one use, and b) that are notably clever. Say, industrial process control methods that use the change in density of the working material to regulate operations, or fitting metal pieces together by heating the outside piece to make it larger then letting it cool and shrink around the inner piece - both of which are things I know exist but would be interested to known more about. This video should have beet titled 'How thermostats work'.
3:12 I know this is a serious video but I wasn't ready for the lips on Celsius
Painter: Sir Celcius, the portrait is complete.
Celcius: Let me look. Oh! Dear, those lips are so pale. Could you make them a bit more...👄
Luscious
I wast just gonna write that xD
I just appreciate that Santorio Santorio and Gallileo Gallilei were BFFs. You know, hang out, crush on Marky Mark, whatever.
I’ve just come to the comments to talk about Celsius’ sweet lips. I see I’m not the only one! You folks are good people and we would hang out and be BFFs!
Thermal switches in blinkers typically have the resistor and bimetallic switch in series, so the light goes on immediately when you turn the blinker on and turns off once the resistor heats up enough. Also thermal switches in blinkers slow down when a light bulb burns out, as the current through the resistor decreases and it takes longer for it to heat. Relay based blinkers usually speed up when a bulb burns out. And the rate change isn't an accident, it is there so the driver notices when a bulb burns out.
Phino K.M. Indeed. And newer vehicles (e.g. EV) with LED turn signals have the audio synthesized to provide that feedback to the driver
Always wondered why they sped up when they were dieing. Great info
My brain died when he said when one bulb fails more power goes through the resistor... But... the resistance is higher now.
It will speed up. Thermal inertia plays a role in it. If you have 2 bulbs on and send more power though the strip, you end up with more hear stored in the heater and the strip and it goes a bigger distance. If you have less heat, it will open less far apart and cool faster too.
I get your logic with the slower turn-on, but tell me, how would it cool down slower and turn off slower if you had less power and thus less heat though it with a single bulb?
The thing speeds up.
@@airgliderz Say you have 2 bulbs at 1 ohm in parallel and one blows the resistance goes up (from .5 to 1), unless car blinkers are wired in some wierd way then idk.
The thermal switches for turning lights blew my mind ! I had no idea !
Steak Saignant same here. My 75 needed a flasher relay, it would get stuck with the lights on.
I have been thinking it's an RLC oscillator for so long.
glad , im not the only one...
i actually went bananas....
I gotta say, you earned my subscription. Your format is direct, factual, and well rounded in general. You answered pretty much every question I had about thermocouples, and bi-metallic switches. Thanks for your hard work!
As a teacher of Physics, Chemistry and Electronics etc, may I commend you on your explanations. They are clear, simple and well presented.
hi, im a power plant control room operator. i know alot about what this video is based on and i think it may be the best demonstration of the physics involved that ive ever seen during my schooling. bravo, you got a new subscriber.
This is like mechanical logic! I really like the way you approach the subject. Direct, simple, concise and precise
Also, I subscribed after this video. I found your contents really valuable
As a Materials Scientist let me add to what you note.
A lot of phenomenons can be shown as a physicl representation, just like chemicals can be used to demostrate natural ideas. Teaching science to kids one uses anyway to show a phenomenon.
This video shows the simple ways that are employed to make things work. Technologist use the understanding of material properties to our benefit. Series like "THE Secret Life of Machines" explains concepts further.
remember most things operate on simple ideas.
@@emanuelmifsud6754 thank you for your input! I will definitely take a look. Greetings from Portugal!
As a software engineer, the thought of replacing analog mechanical controls with sensors and software terrifies me. The question in software engineering is "what happens when we screw something up?" not "what happens if we screw something up?"
Cool video. Was expecting something about manufacturing processes using thermal expansion like mounting bearings, but this was very intresting too.
Cylinder sleeves are installed by heating the cylinder and installing a cold sleeve
If we are mentioning heat uses on metal, wheel bearings on solid axles (possibly but unlikely wishbone) need to be put in the freezer so they shrink and can fit into a wheel hub. I'm assuming a wishbone doesn't ever need to be chilled is because conical bearings are cone shaped ∆ and self align. This is from my single experience doing a 1976 Fiat 124 bearing and hub job.
Agreed, that was my first thought as well
Yup. The ring gear on flywheels are sometimes installed by heating the ring gear, placing it on a cold flywheel, and then letting it cool and contract.
Perhaps the video title should go something like, "The thermal mechanics of thermostats". I would still like to see a video about thermal manufacturing
Regarding failing safe, I couldn't resist quoting John Gall from 1975, "When a fail-safe system fails, it fails by failing to fail safe." : -)
God damnit that quote is brilliant.
And that's why I have a fail-safe thermostat in my truck that fails to safe!! :)
Humorous, but it's true. Too often, people will remove a fail safe circuit and replace it with either nothing or something they created that does not work. Lots of houses have burned down because the homeowners messed with their water heaters not knowing what the hell they're doing.
Who is John Gall?
@@bcubed72 Don't be lazy. Google is your friend, O person of no content channel.
Automotive cooling systems are pressurized around 14-16 psi raising the boiling point an extra 45 degrees. I enjoyed the video I just wanted to offer this information to you.
Also the composition of the cooling fluid increases the boiling point...
An extra 45 deg C? No way.
@@rogeronslow1498 as he was mentioning a pressure measurement in psi, I think he is talking about fahrenheit.
@@marcusrauch4223 lots of people use psi for day to day pressures and SI units for non pressure measurements.
@@rogeronslow1498 Simple check on Google tells us that radiator additive concentration can increase boiling point to 121deg C to 125 deg C. As a Material Scientist I like to keep to correct units mainly the Metric system.
An interesting use you didn't mention: thermal expansion is used to join gears, wheels and other rotating objects to shafts/axles. The wheel and shaft are made to slightly overlapping diameters, then the wheel is heated and expands and the shaft is cooled so it shrinks a bit. The wheel is then slid onto the shaft and when the parts cool down/heat up to room temperature, the wheel grips tightly onto the shaft.
all those Minecraft mods are starting to make sense
honeyspoon that’s actually hilarious
xD
This is incredibly cool! I took some beginner Electrical Engineering classes as part of my computer science degree, and knew a little about this sort of property and applications of it, but most of this content is absolutely brilliant stuff that I've never heard of before!
Just watched a few other videos, and Definitely agree with another comment on here that the quality of this channel's content is up there with Kurzgesagt and Real Engineering. Fantastic!
Dude, your channel is great! You pack a substantial amount of information into these short videos, while still getting it across in a concise, understandable way. TH-cam's algorithm really needs to pick up on your channel already. You should have *far* more subscribers than you do.
Thanks! You just got here. A week ago I only had 5k subs
@@NewMind Okay, that's good to know. So the algorithm has noticed you!
Started watching your channel around a week ago and I'm absolutely addicted! You make some of the most interesting and best produced documentations on TH-cam! Keep going!
I noticed the music volume when you show your intro logo has been too high for nearly all your videos; it's always jolting, especially with headphones. For videos so focused on precision, I'd think you'd try to match the levels more. And honestly your intro music doesn't really fit how relaxing the rest of your channel is. But other than that I love the content.
I like the intro music and video music, perfect volume with headphones, phone or PC speakers. Dont change a thing, great helpfull, interesting, realistic, applicable to every day life videos. .
@David MO sounds like it's time to get your ears checked
agree.
I'm watching this using random 20€ Logitech speakers and it sounds too loud
If it was in reverse it would build up to being too loud. Instead it's instant too loud and fades to normal.
Regardless. It's too loud.
This is constructive feedback. I love the channel and will put up with the non-normalised intro sound, but it's truly there all the time.
The degree of enjoyment i get from these videos is palpable.
What an amazing video to show just how awesome these simple hidden little gadgets are that most people don’t even know exist and to show just how incredibly necessary they are in our daily lives, the ability to harness thermal expansion is truly incredible, well done, I love it!!
For machinery purposes of very tight component assembly you've forgotten the ''interference fit''.
Cooling the shaft and heating up what ever goes onto the shaft.
He didn't want to create a full length feature.
Also missing is the analogue problem of Hysteresis (or lack thereof...). E.g. without designing in a type of 'dead zone', a thermostat would rapidly switch on and off wearing out not only it's own electrical contacts very quickly, but also the equipment used to perform the heating and/or cooling.
Are you a millwright? This is a common task. Heat and cold help a lot.
Really interresting video on a great channel! I really enjoyed the mix of live demonstrations, animations and historic images. Well done- I know how much effort that all takes!
Thanks, for the motivating and supportive words!
The quality of content is up there with Kurzgesagt. I love this. Keep it coming!
You might want to check out "Real Engineering", then. Nothing but quality stuff.
@@lefr33man I'm subscribed to RE already (on my other account), and I love his content! Thanks for suggesting though! You're doing real good by spreading some channel names around.
Wow… Super good video!!!! You did a very good job of covering the topic at hand!!!! Well done. I will watch a few more of your videos…
So that's why car indicators flash faster when one of the bulbs has blown!
I learned something new today. Thank you New Mind.
50+ years on this planet and I never knew exactly how old school car flashers worked 🤔. Great quality content, this was my first video by you and looking forward to more.
61 here. I didn't know either. But there must be additional cleverness, too. Those flashers have to work on a freezing cold winter night in northern Alaska, but also on a sweltering hot day in sunny southern Florida. Somehow the limit temps have to follow the weather.
I just discovered this channel I just wanted to say how much I love it. Criminally low numbers
When I was like 13 I a family friend with an HVAC business showed drove me around and I learned a thing or two. One of the coolest things I will never forget is when I learned how the thermostat double metal coil thing worked based on temperature, and it bending into itself to become a switch. Something about it being such a simple concept really made me appreciate the modern world, where everything is so complex.
This channel is by far the best I follow on TH-cam. You're great, man. Wish I found it earlier
Great video, you break things down really well so that even I can follow it. Much appreciated
This was a really professional and well put together video and the content was very interesting. Good work.
This is hands down one of the best channels in this field. Content quality and story telling is top notch! Keep up the great work! I honestly see this channel getting million+ subscribers! Good luck!
Really awesome video! Keep it up, and you'll be a big channel soon. The quality of the video and animations are really top notch. While your explanations are fantastic, with great pace and delivery too. 10/10.
thanks!
I recently discovered this channel and started watching all videos from the beginning. And each and every video surprises me of how great quality it has. I really learned a lot watching this video. Thank you and please keep making high quality videos.
WOW this video is so well made, although simple enough, the diagrams explain everything very clearly.
I've always wondered why the frequency of a turning light in the car variates with the variation of power consumption (watts) of the bulb you are using.. here is the answer! Great job
I'm glad I found your channel. Your videos are really informative and high quality. Thanks for the great work and keep going!
Great video and wonderful illustration.
Just one thing about those flasher units for motor vehicle turn signals. Where do you put the blinker fluid? Also, are these flasher units optional extras for BMW owners? :)
Very good explanations and well presented.
Très bonnes explications et bien présentées.
Nice stuff, haven't heard of some of the mechanisms yet. Something that I missed would be shrinking bearings, gears, couplings etc. onto shafts by heating the piece and maybe cooling the shaft. They then slip together nicely and after normalizing in temperature they clamp extremely tight together. In a similar fashion there are also heat shrink collets for holding endmills and other tools, there are even special inductive heating devices for inserting and removing the tools from the collet. They are really compact and stiff while also being very precise.
Generally, unless you have the extra equipment or need a really interferenced fit but are limited in heating the outer, cooling the inner is avoided because it will condense water out of the air and you'll end up rusting the parts.
One workaround is using a purged box with something like nitrogen. Now there's no moisture in the air.
I am enjoying the time spent watching your videos +sub ... thanks for taking the time to make them
I knew how thermocouples and thermistors worked, but the rest of this stuff kind of blew my mind. Great video!
Fantastic video with clear and concise explanations and examples. Thanks for the effort you put into this!
Wow 55k already! That is awesome , congrats and well deserved.
So glad I found your channel. It is the best there is. I saw a comment on another video that you also grew up watching modern marvels etc. That is exactly the niche you're filling. Mainstream TV ain't got shit on your channel. Thank you.
Very educational. Thank you. 👍🏼👍🏼👍🏼
very informative ,very clear pronunciation .i request to make more videos like these .thanks
Peaceful video, quite relaxing.
Learned most all of this as a teen, but always cool to watch it explained again. Good vid.
One of the best uses of heat control that amazed me is rice cookers.
Because a magnet will fail once it reaches a certain temp you can pair it so it fails at 101 degrees. Because water boils off at 100 degrees it will only turn off once all water in the pot is gone (absorbed/evaporated).
Well made video thank you! I am a new subscriber this was the first video of yours I watched!
A Nice Revision of what I learned In my engineering 🤘
Another great video, keep it up. Really looking forward to part 3 on your microchip series!
It's in the pipeline. Had to divert a bit to mix up the content but its coming. Thanks for the support.
This might be one of the most informative videos I've seen yet. Now I understand how a salamander's thermocouple works.
Excellent video. Thank you for info
I love your videos, you can tell you work really hard on them, you have so much information and you explain it so that it's easy to understand which is not an easy thing to do.
I think this is underrated channel..This deserves much more subscribers...
Unbelievably good video!!!!
Added to the minute list of videos that have blown my mind.
The amount of effort you have put in making this video is unbelievable! Hats off to you bro! Deepest respect from a mechanical engineer.
This was neat as hell, thank you for the video
I’ve just learnt so much from this video. Thank you!
Whenever I change a hammer handle, I put the head in a 450° oven. The handle opening will grow in. 05" when hot. I then install the handle normally and when the head cools to ambient temp, it grips even tighter.
That is a great idea I will have to try it on one of my broken hammers.
At that temperature is there any chance of scoring the wooden handle to a degree of notability?
@@satinsoldier I only heat the head. 450° is not hot enough to harm the temper nor burn the wood.
Mark Daniel thanks for the additional insight
That's a smart idea. Just like heating up bearings to put on rotors.
7:14 it will short circuit : )
move it in front of heating element : )
Thanks for your Videos : )
Most thermally activated switches I've seen don't use a separate heating element, but instead rely on the current passing through the bimetallic strip to generate heat.
Your videos are amazing, please keep doing what you're doing...
the bimetallic coil also used to be used in carburetor chokes, making them open when the engine is hot enough to need more air.
Are you sure thermal flashers are in parallel and shunt the current?
Do they not simply break the circuit in series when it heats to a certain point?
Fine quality content, glad I found you.
I love the premise of this channel
your explanations are absolutely amazing.
What a great video and channel. You should have way more subs!
maan, this channel is just fucking gold
Just started watching a couple weeks ago, top quality content! Have loved all your videos so far, keep up the great work!
Got recommended here, great channel you got going here. Keep up the good work, got my sub.
I was expecting a Minecraft Thermal expansion tips and tricks but boy this is cool
I always scratch my head when I find channel like this.. content is a pure gold but where the heck are subscribers? Hope TH-cam will stop hiding You so the numbers can start grow adequately to quality of this channel. 👍
very nice video, thanks for sharing.
Thank you for your knowledge!
Great videos. Subscribed!
I noticed you didn't ask people to like/subscribe, and it was refreshing so I did just that.
I just found out what makes the clicking sound in indicator lights and its changed my life now
Hey @New Mind, You have a great video with one glaring exception. The background music laid with dialog is too loud and is distracting from the pace of the piece. The voice of the narrator is good enough to stand on its own.
What a wonderfully informative video on my birthday 🎂🥳
I think I just learned more in 10 minutes of TH-cam than 7 hours of high school
Vlad Caso no
@@manumalhotra3520 wut?
Should have layed of the weed in high school
Isnt that the truth. I learn more from interaction with real world application of math and science. Want to learn math build something. My spelling is terrible but my math got a whole lot better when I started to build stuff. People used to learn hands on and many an invention came about by nessessity.
High School is just about teaching your the bare minimum to make it easier to be introduced to actually learning things. Thanks to school you are at least aware thermal expansion exists, you know how a thermometer works, you at least have an idea of what temperature actually means. You have a very basic level of knowledge like that, which is enough to be easily introduced to stuff like how a thermostat works.
Just subscribed after watching 2 of your videos! So much to learn thanks for sharing!
Very informative videos you have! Can you do another about CVT transmissions?
Awesome video! I've never thought before how a dial thermostat works, but that makes perfect sense. If you happen to know, wouldn't that make the metal very brittle or build up thermal stress after enough exposure though?
Thanks! So short answer yes it does, but how much and how it affects critical bimetallic parts is a complex question, as it is determined by the alloys, the formed shape and even the method of bonding.
Engineers are the heroes of the modern world
I always wondered why there were wires on propane heaters that have no batteries, nor electrical input, I saw a little dumb and imagine they’re being a tiny generator based on pressure within, the thermal couple effect is exactly what this is. Thank you for explaining this in a way, I can understand!
thermocouples don't use thermal expansion they use the thermoelectric effect. most electrical sensors (RTD, TC, diodes) don't use thermal expansion either.
Missed the Sunbeam toaster, lowers the bread and raises it using thermal expansion.
Chris Yu Didn’t the video mention the thermoelectric effect?
@@RandomNumber141 Yes. 11:00
That's why he said, at 10:50 or so, that "joining of two dissimilar metals for the purpose of temperature sensing can also take OTHER forms." He then elaborated on the thermoelectric effect himself.
Great content .
One of the best examples of this is all of the expansion joints on the SR71 Blackbird. This engineering marvel literally leaked fuel while onto the ground and continued to leak while in the air until it reached high temperatures on its outer skin through high speed flight. There were expansion joints all over this aircraft. They figured this out without computers or calculators using slide rules by hand. To this day this aircraft holds the speed records it has achieved to this day. Amazing what people can do when they are faced with these huge problems that they face.
8:12 If a turning signal light fails, shouldn't the flasher circuit get less current and therefore flash with lower frequency? Why does it flash faster?
I think only the newer electronic ones flash faster; the older bi metallic ones indeed flash slower or not at all, if a bulb fails
Quality stuff. Only 37k subs??? You will blow up soon.
Great video, you really know your stuff! I learned several things about systems I thought I understood well, can’t wait to see what you put out next.
Thanks!
I was kinda expecting a video on 'Clever Uses Of Thermal Expansion' to be more than 12 minutes of basic info on thermostats - almost all of it on bimetallic types, which is the second most basic and commonly known use of thermal expansion (#1 being expansion of a liquid, e.g. in a mercury thermometer). The only thing I actually learned was about the wax-melting variant.
wow man you're a genius maybe you should make a video
That frustration happens when you're not the target audience. As you pointed out that may be basic information, but to someone who never thought about termostats the video was perfect - and the title interesting enough for us to play the video.
@@GabrieldeOliveiraAzevedo Fair enough, but I expected 'Clever Uses of Thermal Expansion' to include a) more than one use, and b) that are notably clever. Say, industrial process control methods that use the change in density of the working material to regulate operations, or fitting metal pieces together by heating the outside piece to make it larger then letting it cool and shrink around the inner piece - both of which are things I know exist but would be interested to known more about. This video should have beet titled 'How thermostats work'.
Very Good!
I am predicting that this channel will go through the roof
so damn nerdy, i love it
Cool, that intro train shot is just a 10min walk from here!
Wow that’s amazing. I always wondered how they worked