@@maemilev Smoke detectors need to detect a specific type of gas (CO2), so that it doesn't go off all the time with literally any gas in the air like O2 , NO2 etc.
As an engineering student who took up engineering for the love of physics and mathematics (partly inspired by great content on TH-cam, this channel included), I really appreciate you trying to deep dive into stuff no one bothers to know! A humble smoke detector has so much going on behind the scenes. Keep inspiring new people :)
It's interesting that Geiger counters are sort of the inverse of smoke detectors. With smoke detectors, you have radiation and look for a gas, while with Geiger counters, you have a gas and look for radiation.
I cannot express how valuable this video is. I'm 64 and very curious, this video answered many of my question about atoms and some I never new to ask. Even your (add) was related to your video. The animation showing the various sizes of atoms overlaid on the periodic table was brilliant.
I was once called to assist with a fire detection system used in a diesel engine generator room. The 'authorities' wanted to test the system, so they set fire to a large pan filled with diesel fuel. The whole room was filled with smoke, but no alarms sounded. At this stage I entered the scene - I started the fan and got the 'diesel smoke' out. Then I got a cigarette from one of the engineers - lit it - and blew smoke into the fire detectors - all worked fine - the alarm sounded every time. Why you may ask. Smoke from burning fuel is (very) dark/black - and black does not reflect light - the cigarette smoke is 'white' - which reflects lights. Wisdom: look at what kind of smoke a fire will generate - the select the type of detector.
Thanks, I’m an x radiation worker (meaning I’m retired not dead) and always look for incorrect information in such vids. Yours was spot on and well worth refreshing smoke detectors. I think your conclusion re danger of alpha v gamma needs more explanation ie that tiny alpha emitter would destroy your inside pretty quick, BUT a dose of a few hundred micro sieverts for several minutes would most likely cause no issue, tho NOT recommended either. Thanks again
According to my using experience on both of them, the radiation type smoke detector lasts very long, over 20 years without trouble, but it only able to detect smoke ! The laser beam type detector triggers the alarm even with steam or oil vapour during cooking that I do not like if it is installed in kitchen area close to stove. It is much more expensive as compare to the simple radiation type. Not like the radiation type runs with 9V, it requires both batteries and AC power that is not so simple to install and runs it. It starts has trouble after two years like sounding alarm by itself without detecting any smoke or any vapours. I repaired them by cleaning the laser chamber where I saw very few and fine dust accumulate inside, but some still fault alarm after cleaning.
I can't express enough how much i am pleased with this video. And i love how you branched in a clever way to explain other relevant topics besides the mechanism of smoke detector and the incorporation of this mind blowing information about the sizes of atoms and the power they possess it's just amazing. The animation also is brilliant. I will always follow this channel and i hope you always upload videos like this without skipping any bits of information, the more dense the better :)
Just amazing work, simple to understand explanation, wonderfully made animations , Thank you to entire team for bringing such an amazing videos to us. 🌹👍
>that slight sass on the annoying beeping >and the always dead batteries >and on terrible cooking and burnt popcorn >recently had to buy a smoke detector Did our esteemed teacher had one too many cooking accidents? The answer may surprise you! Jokes aside, once again you managed to make another excellent video sir. One of the best channels on TH-cam. You deserve every sub and far more so.
Couple things: First & foremost, not all smoke detectors contain radiation: only ionization ones do, it's just that they're the most common. Photoelectric smoke detectors don't contain radiation, & many people fail to mention that this type even exists (let alone explain how they work). Congrats to you for doing both of the latter things. Nice job on that _extremely_ accurate Kidde i9040 model! (at least if you made it, even if on the real thing the "LED tube" is clear instead of red). 0:46 A lot of smoke detectors _do_ have only a battery for power like that one, but just as many can also take 120VAC as a power source (with a backup battery in case the power fails too of course). 0:58 Smoke detectors don't sound like that anymore, only older ones do; modern ones produce a pattern known as "temporal 3": 3 beeps, pause, 3 beeps, pause, etc. In addition a "chirp" is not that long: it's just what it sounds like, a chirp, like that a bird would make. 1:09 You say _"few_ basic components", but it all depends on the design & complexity of the unit (& how many features it has). 1:47 It's "Am-ma-ree-cee-um", not "Ameri-cee-um". 1:49 I'm not sure I've ever seen a smoke detector or a consumer box with that symbol, though it might be on bulk boxes of detectors. Also while disassembling a smoke detector is indeed not recommended for several reasons, there's not enough Americium 241 present to hurt you (though as the narrator says directly exposing yourself to it in any way is also not recommended). 4:48 Yeah, even if they _are_ radioactive. 5:04 Yes, though in general it's known as a "detection chamber" regardless of detector type. 6:42 Like hydrogen cyanide? (which I believe is often produced by fires, & can in itself be deadly) 6:49 The _particles generated by_ burning popcorn, not the popcorn itself because that just wouldn't make sense. 8:32 Nice grammar. 10:08 That _is_ interesting! I never thought about where that type of detector got what makes it tick. Neat how a substance that would probably be considered waste in the nuclear power process can actually be used for something! One person's trash is another person's treasure like they say! 11:45 Yep, including what kinds of fire each is best at detecting (sadly most home fires are the kind that ionization detectors, the type most commonly installed, can't detect) 11:47 _"Ionization",_ not _"Ionizing"._ 12:10 Hopefully most people should have enough common sense to _not_ do that. 12:19 Really? I had no idea it worked like that! Fun Fact: some _very_ early ionization smoke detectors actually used another form of radiation called "Radium-226".
Are you sure that a smoke alarm contains such a small amount of Americium that it won’t hurt you? I’m asking cause my 6 year old son opened an alarm not long ago cause he wanted to see how it worked and I’m a bit concerned
@@kingelvis4688 Yes: most only use around 1 microcurie of Americium 241; this is nowhere near enough what's necessary to harm people. It's still not a good idea to open the detection chamber of an ionization smoke detector (as this exposes you directly to the radiation) or come into contact with the Americium in any way though.
So much information beyond the simple explanation. Love how in-depth you go. Also, how long did it take for someone to make this? So much knowledge needed to make something so "simple".
Unbelievable quality video. All your videos are so incredibly educational, I love watching your channel for hours on end. I often find myself revisiting your videos just to try and wrap my brain around the concepts you explain.
I love this video, the visual explanation is amazing the detail that your team must go through to gather as this information then sort it in a way so that most people can understand and to then make an animation for that then to synchronize everything is incredible truly making the world a better place. I also love the jokes that were put in and side mention of how it’s marketed effectively as it is both funny and still educational
playing multiplayer online games with voice chat there is almost always someone with that smoke detector low battery chip noise going off every few seconds. its just amazing how many people live with that chirp when its such an easy fix that could even save a life. thanks for the video duder.
In the same way people become accustomed to smells in their homes, people become accustomed to noise in their home as well. Eventually, your brain just tells you it's normal, and you tune it out. They're not necessarily dumb. They've just let it beep so long they don't even hear it anymore, and then they forget completely to change the battery.
Your content is amazing! One of the best parts of existing now is our unfathomable access to knowledge, and you work so hard to share such high quality educational information, it's an honor to learn from you. Thanks for all your channel does, it makes my life much better.
13:52 The dollar sign being on the wrong side is the biggest draw back I noticed in this video. The animation and narration is great. The sponsor commercial integrates well and feels like it belongs in the video. Well done.
That was a very excellent demonstration & explanation of the smoke detectors not only at the hardware level, but it was also interesting at fundamental level, I totally appreciate your work and efforts to create this video.
The American company that I'm working in does also sell the smoke dectector all around world. Though I'm for other product function, it's good to know how the dectector is working. Thanks and your posted video explains so clearly.❤
Sir can you please be frequent... I have watched all of your fantastic videos, but in jan 2022, today after 10 months when your video was recommended i recalled you after much time. We await your video so far a lot.... Here after expecting atleast 1 video in a month ☺️☺️☺️
I wish my lessons in school were like this, I would have learned much much more, thanks for your informative and intresting videos, keep up the good work.
Omg! Now I know why the smoke detector in my house is set off. I'm a bad cook! 🤣🤣. Jokes aside, I realy love your videos. I had a vague idea of how a smoke detector works, but not all the details. It's fascinating how different areas of science are used to make our lives easier, or even save our lives, starting from physics, to chemistry and electronics. Please don't stop making these kind of videos. I appreciate the hard work you put into these videos!
The illustrations & explanation were so well done! The atom size section somewhat flew over my head but I'm sure it'll be helpful for others. Now I'm left curious how CO2 detectors/alarms work.
You have already taught me more that the entire education system of my country, I hope this humble wordrs means something, alll that I can do right now is no more than thank, from my soul, to you, and tomorrow, when all of this knowledge pays off, I'll thank you in the proper way, even then Im sure I'll not feel will be enough greatfull for all the knowledge this channel give to me, thank you, sir, you deserve the best this human global society could ever give to you.
I come to these videos for the content, but I just wanted to give a shout out to Phil Lee for his incredibly good voiceover work. What a soothing voice this guy has.
I love your explications but I have a question. Why Americium isn't ionising the smoke ? In other terms, why does the smoke is absorbing alpha particles preventing the air to be ionised ?
So if I understood correctly, when smoke enters the chamber and the radioactive americium hits the smoke particles with its decay, the positive and negative potential stored in the plates grow significantly because more smoke atoms are being “knocked” of electrons thus triggering a circuit that measures the voltage potential in the chamber tripping the alarm.
Education to the people! Fantastic videos and I love the trivia at the end of the videos. "Some companies have the thing something thingy flipped" lol, love it.
Do they still sell ionisation detectors over there? I thought nowadays it was optoelectronic only.. Advantage is that they are better and faster in detecting..
Fantastic video and outstanding animation! However, "No one would ever buy a radioactive smoke detector" is an opinion and not an objective fact. People used to be fearful of electricity too, but we learned to not to touch live wires. Let us become educated, get over the phobia, and excersise wisdom and proper safety, while taking full advantage of radioactive technologies where they can demonstrate superiority to alternatives.
The genius part of this "ionizing detector" is that it occludes the fact that it is in-fact the radiation everyone is "afraid" of when you say radioactive... but then there is ionizing radiation and non-ionizing radiation! Out if which the first one is in-fact the harmful one :D
What is happening when the smoke alarm is chirping and you don’t replace the battery? Does the smoke alarm fail or does it still go off? That is my question
Still requires the battery to work the chirp is a warning to change the battery. It will eventually stop chirping, and the battery will be completely drained. So the alarm will not work.
Good lord! For someone who at the beginning of the video professed they didn't know why the smoke detector was radioactive, you suddenly seemed to have an extreme understanding of how and why they worked they way they did.
It took me until almost the end of the video to realize you were showing atoms with electron clouds as opposed to orbits. I'm glad we're starting to move away from teaching that model and appreciate you contributing to that movement.
Ever heard the story of the kid that built a small reactor in his shed from a bunch of smoke detectors? He went crazy eventually and got radiation poisoning but he actually made a working small reactor
Yeah I've heard of that story, he actually never made a nuclear reactor or even got radiation poisoning though, he just built a makeshift neutron source.
Fun Fact: A nuclear power plant exposes you to the same amount of radiation as a single smoke detector (0.01 mrem/year). That means you are absorbing more radiation from the smoke detectors in your home and the bananas on your countertop than from a nuclear power plant 50 miles away.
Actually these are NOT smoke DETECTORS. They are smoke ALARMS. A smoke detector is just one part of a system, which consist of remotely placed detectors (fire, smoke, gas, etc.), alarms, panels, etc. You find these in supervised installations common in commercial, industrial or multiresidiential buildings. A smoke alarm is a all in one unit comprising a power source (connection to the dwelling mains with battery backup) detecton circuitry and alarm circuitry. These are the units commonly found in residential structures. Becoming more common are smoke alarms with integeral carbon monoxide alarms. Both pf which are now required in new home construction. Source: NFPA 72.
The immense attraction of one gram of pure protons to one gram of pure electrons looks like an engineering potential for future machines waiting to be exploited.
I like that you coherently used physically accurate electron orbitals. Not just spheres, but actual nested shapes.
I’m glad I’m not the only one who appreciated that!!
Why air purifier doesn't use americium and none radioactive. Different tech, same function??
@@maemilev Smoke detectors need to detect a specific type of gas (CO2), so that it doesn't go off all the time with literally any gas in the air like O2 , NO2 etc.
I like how he used spaceships and cheetahs as units of measure. 400,000 times the speed of a cheetah is much easier to comprehend than
m/s or mph.
As an engineering student who took up engineering for the love of physics and mathematics (partly inspired by great content on TH-cam, this channel included), I really appreciate you trying to deep dive into stuff no one bothers to know! A humble smoke detector has so much going on behind the scenes. Keep inspiring new people :)
what engineering did you course? these videos really interest me, and your interest makes me curious
I love learning about this! You aren't the only one.
It's interesting that Geiger counters are sort of the inverse of smoke detectors. With smoke detectors, you have radiation and look for a gas, while with Geiger counters, you have a gas and look for radiation.
Well, this guy summarize it pretty well!
Makes sense
Science rules!!
I've wondered how these 2 devices work since i was a teen . My degrees in electronics and electrical never explained it , now you did. Thanks
I love how educational this is, and the animations help so much it's unreal. Thank you!
The animation is really well done and super helpful 💯
I cannot express how valuable this video is. I'm 64 and very curious, this video answered many of my question about atoms and some I never new to ask. Even your (add) was related to your video. The animation showing the various sizes of atoms overlaid on the periodic table was brilliant.
I was once called to assist with a fire detection system used in a diesel engine generator room. The 'authorities' wanted to test the system, so they set fire to a large pan filled with diesel fuel. The whole room was filled with smoke, but no alarms sounded.
At this stage I entered the scene - I started the fan and got the 'diesel smoke' out. Then I got a cigarette from one of the engineers - lit it - and blew smoke into the fire detectors - all worked fine - the alarm sounded every time.
Why you may ask. Smoke from burning fuel is (very) dark/black - and black does not reflect light - the cigarette smoke is 'white' - which reflects lights. Wisdom: look at what kind of smoke a fire will generate - the select the type of detector.
THIS
Well rare to see, I believe industrial fire prevention systems should use multiple detection methods just for this purpose.
Ionisation : for rapidily flaming fire
Photoelectric/photo optical : slow/smouldering fires ..
I can't get enough of your videos! They are the best! The time spent on animation is amazing! Keep up the great work guys! You have many fans!
I greatly enjoyed the humorous bits: “The battery, which is always dead”, “When burnt pop corn…”, “…indicating that you are bad at cooking”. Hahaha.
Thanks, I’m an x radiation worker (meaning I’m retired not dead) and always look for incorrect information in such vids. Yours was spot on and well worth refreshing smoke detectors. I think your conclusion re danger of alpha v gamma needs more explanation ie that tiny alpha emitter would destroy your inside pretty quick, BUT a dose of a few hundred micro sieverts for several minutes would most likely cause no issue, tho NOT recommended either. Thanks again
Gamma radiation is the real nasty barstood 😅
According to my using experience on both of them, the radiation type smoke detector lasts very long, over 20 years without trouble, but it only able to detect smoke ! The laser beam type detector triggers the alarm even with steam or oil vapour during cooking that I do not like if it is installed in kitchen area close to stove. It is much more expensive as compare to the simple radiation type. Not like the radiation type runs with 9V, it requires both batteries and AC power that is not so simple to install and runs it. It starts has trouble after two years like sounding alarm by itself without detecting any smoke or any vapours. I repaired them by cleaning the laser chamber where I saw very few and fine dust accumulate inside, but some still fault alarm after cleaning.
I can't express enough how much i am pleased with this video. And i love how you branched in a clever way to explain other relevant topics besides the mechanism of smoke detector and the incorporation of this mind blowing information about the sizes of atoms and the power they possess it's just amazing. The animation also is brilliant. I will always follow this channel and i hope you always upload videos like this without skipping any bits of information, the more dense the better :)
Great video! Reminds me of a neighbor who used this as a timer to remind her when her food was ready. Everyday for years.
Just amazing work, simple to understand explanation, wonderfully made animations , Thank you to entire team for bringing such an amazing videos to us. 🌹👍
I don't know, I have watched 5 videos of branch education in my current binge watching session, and gotta admit the content is outstanding!
>that slight sass on the annoying beeping
>and the always dead batteries
>and on terrible cooking and burnt popcorn
>recently had to buy a smoke detector
Did our esteemed teacher had one too many cooking accidents? The answer may surprise you!
Jokes aside, once again you managed to make another excellent video sir. One of the best channels on TH-cam. You deserve every sub and far more so.
I love this! it's not too simplified and not too much detail, it's perfect!
This channel should have millions of subscribers. The content is amazingly well done
This definitely had way more information needed to understand how ionizing smoke detectors work. But still loved it
Couple things:
First & foremost, not all smoke detectors contain radiation: only ionization ones do, it's just that they're the most common. Photoelectric smoke detectors don't contain radiation, & many people fail to mention that this type even exists (let alone explain how they work). Congrats to you for doing both of the latter things.
Nice job on that _extremely_ accurate Kidde i9040 model! (at least if you made it, even if on the real thing the "LED tube" is clear instead of red).
0:46 A lot of smoke detectors _do_ have only a battery for power like that one, but just as many can also take 120VAC as a power source (with a backup battery in case the power fails too of course).
0:58 Smoke detectors don't sound like that anymore, only older ones do; modern ones produce a pattern known as "temporal 3": 3 beeps, pause, 3 beeps, pause, etc. In addition a "chirp" is not that long: it's just what it sounds like, a chirp, like that a bird would make.
1:09 You say _"few_ basic components", but it all depends on the design & complexity of the unit (& how many features it has).
1:47 It's "Am-ma-ree-cee-um", not "Ameri-cee-um".
1:49 I'm not sure I've ever seen a smoke detector or a consumer box with that symbol, though it might be on bulk boxes of detectors. Also while disassembling a smoke detector is indeed not recommended for several reasons, there's not enough Americium 241 present to hurt you (though as the narrator says directly exposing yourself to it in any way is also not recommended).
4:48 Yeah, even if they _are_ radioactive.
5:04 Yes, though in general it's known as a "detection chamber" regardless of detector type.
6:42 Like hydrogen cyanide? (which I believe is often produced by fires, & can in itself be deadly)
6:49 The _particles generated by_ burning popcorn, not the popcorn itself because that just wouldn't make sense.
8:32 Nice grammar.
10:08 That _is_ interesting! I never thought about where that type of detector got what makes it tick. Neat how a substance that would probably be considered waste in the nuclear power process can actually be used for something! One person's trash is another person's treasure like they say!
11:45 Yep, including what kinds of fire each is best at detecting (sadly most home fires are the kind that ionization detectors, the type most commonly installed, can't detect)
11:47 _"Ionization",_ not _"Ionizing"._
12:10 Hopefully most people should have enough common sense to _not_ do that.
12:19 Really? I had no idea it worked like that!
Fun Fact: some _very_ early ionization smoke detectors actually used another form of radiation called "Radium-226".
Are you sure that a smoke alarm contains such a small amount of Americium that it won’t hurt you? I’m asking cause my 6 year old son opened an alarm not long ago cause he wanted to see how it worked and I’m a bit concerned
@@kingelvis4688 Yes: most only use around 1 microcurie of Americium 241; this is nowhere near enough what's necessary to harm people. It's still not a good idea to open the detection chamber of an ionization smoke detector (as this exposes you directly to the radiation) or come into contact with the Americium in any way though.
This channel’s videos is one of reason that why i’m learning English.
Thank you for teaching me how the world works.
So much information beyond the simple explanation. Love how in-depth you go. Also, how long did it take for someone to make this? So much knowledge needed to make something so "simple".
You are the one defining Education through Animations. Your animations are the most realistic and detailed. I am so glad that you do what you do.
Superb quality and lovely voice. Many thanks
I’m a Fire protection electrician in Australia and we don’t use ionisation detectors at all these days, it’s all photoelectric.
So? The Chinese are taking your country over, what do you expect
Your pronounciating skill is absolutely superb 😍 what a clear cut explanation sir
Well done it
Thanks to Branch Education and Everyone who supported B - Education for letting us to learn what we want but we can't. ❤️❤️
What you shared is wonderfully presented. Even with a sprinkling of humor - Which is appreciated
You did a great job!
Unbelievable quality video. All your videos are so incredibly educational, I love watching your channel for hours on end. I often find myself revisiting your videos just to try and wrap my brain around the concepts you explain.
great voice for a great animation
Recently discovered your channel and am blown away by the way you explain complex topics with quality and clarity.
I love this video, the visual explanation is amazing the detail that your team must go through to gather as this information then sort it in a way so that most people can understand and to then make an animation for that then to synchronize everything is incredible truly making the world a better place. I also love the jokes that were put in and side mention of how it’s marketed effectively as it is both funny and still educational
playing multiplayer online games with voice chat there is almost always someone with that smoke detector low battery chip noise going off every few seconds. its just amazing how many people live with that chirp when its such an easy fix that could even save a life. thanks for the video duder.
In the same way people become accustomed to smells in their homes, people become accustomed to noise in their home as well. Eventually, your brain just tells you it's normal, and you tune it out. They're not necessarily dumb. They've just let it beep so long they don't even hear it anymore, and then they forget completely to change the battery.
Your content is amazing! One of the best parts of existing now is our unfathomable access to knowledge, and you work so hard to share such high quality educational information, it's an honor to learn from you. Thanks for all your channel does, it makes my life much better.
I love the subtle humor.
Thanks for showing where to find the isotope. Now, I'm off to build myself my first homemade reactor to help for this winter. Free energy!
13:52 The dollar sign being on the wrong side is the biggest draw back I noticed in this video. The animation and narration is great. The sponsor commercial integrates well and feels like it belongs in the video. Well done.
That was a very excellent demonstration & explanation of the smoke detectors not only at the hardware level, but it was also interesting at fundamental level, I totally appreciate your work and efforts to create this video.
This is very well put together. Amazing explanation & animation in demonstration. Thank for putting this together to share. Your content is top notch.
The American company that I'm working in does also sell the smoke dectector all around world. Though I'm for other product function, it's good to know how the dectector is working. Thanks and your posted video explains so clearly.❤
Very well explained sir
This is the best science channel available on TH-cam!
Sir can you please be frequent...
I have watched all of your fantastic videos, but in jan 2022, today after 10 months when your video was recommended i recalled you after much time. We await your video so far a lot....
Here after expecting atleast 1 video in a month
☺️☺️☺️
I can't stop myself from liking any of your video after watching it.
I wish my lessons in school were like this, I would have learned much much more, thanks for your informative and intresting videos, keep up the good work.
Well research, paced, and emotionally stable video. I love the smattering of humour to maintain interest. I learned a lot here. Thank you
College style lectures that everyone can understand … you sir , should be the benchmark for education
Small thing but so much engineering going into it.. great explanation as always
Kênh này hay , giải thích mô tả bằng hình ảnh rất dễ hiểu. Thời gian đủ dài để nắm bắt kiến thức.
Best channel ever
these animations and models are the best for visualizing the activity of the topic, thank you, 😍 amazing quality
although i couldn't understand but i liked your field of study
Besides the rich amount of knowledge of your videos you also help me sleep everyday. Thank you man
This is a VERY prolific voice actor.
We appreciate your creation of such videos which increase our knowledge and light up our minds
By far the best education channel I've come across
this type of content is precious
Wow, it is becoming annoying how good your content is. Keep it up
how does this man manage to keep my attention
i have severe adhd so i get distracted VERY easily and i also have a snall attention span
Because you might be passionate and/or interested in one of the subjects here!
Sometimes your passion chooses YOU
Omg! Now I know why the smoke detector in my house is set off. I'm a bad cook! 🤣🤣. Jokes aside, I realy love your videos. I had a vague idea of how a smoke detector works, but not all the details. It's fascinating how different areas of science are used to make our lives easier, or even save our lives, starting from physics, to chemistry and electronics. Please don't stop making these kind of videos. I appreciate the hard work you put into these videos!
Swap it out for a light based one,
They tend to be less sensitive to kitchen smoke
The illustrations & explanation were so well done! The atom size section somewhat flew over my head but I'm sure it'll be helpful for others.
Now I'm left curious how CO2 detectors/alarms work.
Keep doing this channel! Super interesting and very well made
Thank you so much for illustrating the mind-blowing and amazing technology behind the Startlink satellites.
Are you a bot
You have already taught me more that the entire education system of my country, I hope this humble wordrs means something, alll that I can do right now is no more than thank, from my soul, to you, and tomorrow, when all of this knowledge pays off, I'll thank you in the proper way, even then Im sure I'll not feel will be enough greatfull for all the knowledge this channel give to me, thank you, sir, you deserve the best this human global society could ever give to you.
If you're interested, if the radioactive material could be used to make any dangerous reactions, search about the "radioactive boy scout"
Thank you for mentioning Geiger counter. I learnt a new thing
Excellent Explanation .
This channel is the best
All the videos from this channel really amaze me. Such a high quality content. Thank you very much.
I come to these videos for the content, but I just wanted to give a shout out to Phil Lee for his incredibly good voiceover work. What a soothing voice this guy has.
I love your explications but I have a question. Why Americium isn't ionising the smoke ? In other terms, why does the smoke is absorbing alpha particles preventing the air to be ionised ?
Great video.
So if I understood correctly, when smoke enters the chamber and the radioactive americium hits the smoke particles with its decay, the positive and negative potential stored in the plates grow significantly because more smoke atoms are being “knocked” of electrons thus triggering a circuit that measures the voltage potential in the chamber tripping the alarm.
Great video! Very interesting and informative, thank you for this!
Education to the people!
Fantastic videos and I love the trivia at the end of the videos. "Some companies have the thing something thingy flipped" lol, love it.
the next gen of education
Do they still sell ionisation detectors over there?
I thought nowadays it was optoelectronic only..
Advantage is that they are better and faster in detecting..
Focused and pedagogic, thanks.
Beautiful illustration and explanation of smoke detectors
EXCELLENT VIDEO, GRAPHICS, SCRIPT - THANKS
JR
Fantastic video and outstanding animation!
However, "No one would ever buy a radioactive smoke detector" is an opinion and not an objective fact.
People used to be fearful of electricity too, but we learned to not to touch live wires.
Let us become educated, get over the phobia, and excersise wisdom and proper safety, while taking full advantage of radioactive technologies where they can demonstrate superiority to alternatives.
The genius part of this "ionizing detector" is that it occludes the fact that it is in-fact the radiation everyone is "afraid" of when you say radioactive... but then there is ionizing radiation and non-ionizing radiation! Out if which the first one is in-fact the harmful one :D
Don't even know how to say how brilliant this video is! Thanks for another knowledge masterpiece, thank you BE!!! The battery joke 😂😂
We take this apart so you don’t have to. Saved my life
What is happening when the smoke alarm is chirping and you don’t replace the battery? Does the smoke alarm fail or does it still go off? That is my question
Still requires the battery to work the chirp is a warning to change the battery. It will eventually stop chirping, and the battery will be completely drained. So the alarm will not work.
Good lord! For someone who at the beginning of the video professed they didn't know why the smoke detector was radioactive, you suddenly seemed to have an extreme understanding of how and why they worked they way they did.
Wow. Super cool video. The animations, the imformation.. brilliant!
It took me until almost the end of the video to realize you were showing atoms with electron clouds as opposed to orbits. I'm glad we're starting to move away from teaching that model and appreciate you contributing to that movement.
Excellent demonstration 👌
Ever heard the story of the kid that built a small reactor in his shed from a bunch of smoke detectors? He went crazy eventually and got radiation poisoning but he actually made a working small reactor
Yeah I've heard of that story, he actually never made a nuclear reactor or even got radiation poisoning though, he just built a makeshift neutron source.
The Explanations are better than my Future.
Amazing 3D video of the technology you really help people understand
Fun Fact: A nuclear power plant exposes you to the same amount of radiation as a single smoke detector (0.01 mrem/year). That means you are absorbing more radiation from the smoke detectors in your home and the bananas on your countertop than from a nuclear power plant 50 miles away.
Under the assumption that it’s run correctly!
But yeah, one of the many victims of oil’s industry propaganda
Congratulations from Ecuador 😊
Actually these are NOT smoke DETECTORS. They are smoke ALARMS. A smoke detector is just one part of a system, which consist of remotely placed detectors (fire, smoke, gas, etc.), alarms, panels, etc. You find these in supervised installations common in commercial, industrial or multiresidiential buildings.
A smoke alarm is a all in one unit comprising a power source (connection to the dwelling mains with battery backup) detecton circuitry and alarm circuitry. These are the units commonly found in residential structures. Becoming more common are smoke alarms with integeral carbon monoxide alarms. Both pf which are now required in new home construction.
Source: NFPA 72.
Thank you very much for the video!. Regards from México!.
The immense attraction of one gram of pure protons to one gram of pure electrons looks like an engineering potential for future machines waiting to be exploited.
A dating machine for particle man.
It's nuclear fission.
I like the way you showed the sub-orbitals of atoms and pretty accurate structure.
The narrator's voice reminds me of the Discovery channel shows I used to watch growing up in the mid-2000s.
A person with a soothing voice, funny jokes, informational information, and 3d models.
what more could I ask for? subscribed!
best explained video