Mystery of the Demagnetizer | What's inside? How does it work?
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- เผยแพร่เมื่อ 19 มิ.ย. 2024
- I have always wondered how the inexpensive magnetizer-demagnetizer tool works. What's inside it? And why are there stairs inside the demagnetizer opening?
According to most sources the stairs are important, but the explanations are vague at best.
In this video, I will do some investigation and open the tool to finally figure out how it really works! And show how you don't need the tool if you have a bar magnet...
The F71 Teslameter donated in 2018 by Lake Shore Cryotronics:
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FULL MUSIC CREDITS
Time codes: 0:01 + 10:18
"Martian Cowboy" Kevin MacLeod (incompetech.com)
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"Perspectives" Kevin MacLeod (incompetech.com)
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"Lightless Dawn" Kevin MacLeod (incompetech.com)
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"Long Note Three" Kevin MacLeod (incompetech.com)
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"Impact Lento" Kevin MacLeod (incompetech.com)
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"Supernatural" Kevin MacLeod (incompetech.com)
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"Stormfront" Kevin MacLeod (incompetech.com)
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2) "Spacial Harvest" Kevin MacLeod (incompetech.com)
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#Magnetizer #Demagnetizer #Tool - วิทยาศาสตร์และเทคโนโลยี
![ป่ะป๊าเลอา ชื่อ ??? [ดูคลิปเต็มหน้าช่อง] #Short | PANG ORNHIRA](http://i.ytimg.com/vi/ssxX0VkJCTo/mqdefault.jpg)
Son of a....this is just like when I learned that a nuclear power plant is really just a fancy way to heat water.
Just a big kettle
Friend, when I was 18: *complex explanation of how some of the fission reaction generates an electron flux which is captured in a magic series of wires*
Nope it's just a steam engine powered by angry rocks.
@@devikwolf I... I hate that this is true.
@@evrlstMUSIC it's really kinda disappointing, isn't it?
@@devikwolf Yep reminds me if my intro to electronics class, My professor said "almost all forms of generating electricity is just spinning shit in a circle." Really took the magic out of electricity when he put it like that.
Wow, that's too simple! My guess was the demagnetizer had some arrangement of alternating poles, so as the screwdriver was passed through it, it would experience a rapidly changing field which would demagnetize it.
Many websites believe it too :) But they also say the screwdriver will lose its magnetism over time since it is paramagnetic. I doubt they ever looked up what paramagnetism is :D A paramagnetic material will lose its magnetism as soon as the external magnet is removed. Thanks for watching!
I was thinking a magnet combined with a copper coil of some sort. Simplicity trumps complications once more!
All you have to do is overcome the hysteresis... Without going too far. So what you have is a concentrated north to magnetize the tool, and a weakened south to demag it
@@brainiac75 hi could you do a connection with this Magnetic fields may hold key to malaria treatment, UW researchers find ... using this device or a larger coil.
I was thinking the same thing! Thought there were some smaller magnets arranged in the stairs in an alternating way
According to my demagnetizers "manual" the stairs are there to help you align with the proper distance to the magnetic field as different items/materials need a different distance.
That would make sense!
so you magnetize with same distance but need different distance to demagnetize it?
The stairs are there to act as a physical barrier to keep heavily magnetized items from pressing against the bottom of the demagnetization area, which is less effective.
My guess is also to provide a visual aid in the event the lettering wears off or if you need to use that in a spot with low visibility. It just allows for an “at a glance” understanding of what is what
I have wondered about this for YEARS! This is the best thing ever.
Same, i have searched for this video for ages. Finally it came.
Same y'all. My mind can finally be at ease..
Or how ills electrocute other living beings with 800volts.
I wouldnt say ‘bes’ thing ever, but yeah. Waiting to know what a degausser actually does
@@touchedouche8806 hey, if you only knew the number of neurons that were working on this in the background for years, you'd agree with me. :)
The steps are meant to let you move away from the field strength in increments by going up a step each time.
Hm, that may be a thing for tools that are strongly magnetized (highly ferromagnetic). So far I haven't experienced anything that needed that. But many websites mention the stairs as important since they make the magnetic field irregular x) Thanks for watching!
That makes sense. I was wondering what the point of them is after he showed there was nothing in there.
@@brainiac75 I thought it was so you could still tell which was the demagnetiser after the words rubbed off.
What about the gadgets that have the demagnetization part completely open (like a U)?
@@user-vn7ce5ig1z exact same. Opened mine up and it's just like his.
I often wondered how a demagnetizer worked or how to get something demagnetized. It's fascinating how rudimentary the process is. Not everything needs to be overly complicated.
5:47
Brainiac75: *sticks rod in hole
The music: aaaaaaa *aaaaaAAAAAAAA*
This man is such a magneto, that everything in his house is magnetic!
Hehe, for safety reasons I do have to know where all the ferromagnetic materials in my house are located x) Thanks for the early watch!
“King of the halls“ …..as in…
The Hall effect?
😁👍
What he can generate a high voltage? Btw a magneto is high voltage generator.
@@hullinstruments unintentionally, but yes
Bird flying around Brainiac's house: shit, where to fly, my compass failed
For an even better demagnetization, stick the magnet on a drill machine, with its axis perpendicular to the rotation-axis of the drill. With the drill spinning, slowly move away the magnet from the DUT. This works similarly to the "degaussing" pulse in CRT-based video-tubes.
:O that was some great info, thanks sir!!
DUT? This guy is definitely an engineer
@@N00B283 lol
A malaria parasite within a human red blood cell. The large circle in the parasite is a food vacuole. Stacked heme are visible inside the vacuole.
Researchers at the University of Washington have discovered a method of treating malaria with magnetic fields that could prove revolutionary in controlling the disease the World Health Organization calls one of the world’s most complex and serious human health concerns.
Henry Lai, UW research professor of bioengineering, says the malaria parasite Plasmodium appears to lose vigor and can die when exposed to oscillating magnetic fields, which Lai thinks may cause tiny iron-containing particles inside the parasite to move in ways that damage the organism.
“If further studies confirm our findings and their application in animals and people, this would be an inexpensive and simple way to treat a disease that affects 500 million people every year, almost all in third-world countries,” Lai said. According to the World Health Organization, as many as 2.7 million people die of malaria every year. Approximately 1 million of those are children.
In the past two decades, the emergence of drug-resistant malaria parasites has created enormous problems in controlling the disease. Lai says his method could bypass those concerns because it is unlikely Plasmodium could develop a resistance to magnetic fields.
Malaria is spread by female Anopheles mosquitoes. The organism first invades the liver, then re-emerges into the bloodstream and attacks red blood cells. This is what causes malaria’s hallmark symptoms: fever, uncontrolled shivering, aches in the joints and headaches. Infected blood cells can block blood vessels to the brain, causing seizures and death. Other vital organs are also at risk.
Lai’s research appears to take advantage of how the parasites feed. Malaria parasites “eat” the hemoglobin in red blood cells of the host. They break down the globin portion of the hemoglobin molecule, but the iron portion, or the heme, is left intact because the parasite lacks the enzyme needed to degrade it. This causes a problem for the parasite because free heme molecules can cause a chain reaction of oxidation of unsaturated fatty acids, leading to membrane damage in the parasite. The malaria organism renders the free heme molecules non-toxic by binding them into long stacks - like “tiny bar magnets,” according to Lai.
He and three other researchers have exposed Plasmodium falciparum, the deadliest of the four malaria parasite species, to a weak alternating, or oscillating, magnetic field. Data sets showed that exposed samples ended up with 33 to 70 percent fewer parasites than unexposed samples. Measurements of hypoxanthine, a precursor for nucleic acid synthesis used by the parasite, indicated that metabolic activities had also significantly slowed in exposed samples. Such reductions would be enough to manage malaria, Lai said.
The oscillating magnetic field may affect the parasites in two ways, according to Lai. In organisms still in the process of binding free heme molecules into stacks, the alternating field likely “shakes” the stacked heme molecules, preventing further stacking. That would allow harmful heme free reign within the parasite. If the parasite is further along in its life cycle and has already bound the heme into stacks, the oscillating field could cause the stacks to spin, causing damage and death of the parasite.
Although initially promising, Lai says more research is needed.
“We need to make certain that it won’t harm the host,” Lai said. “My guess is that it won’t. It’s a very weak magnetic field, just a little stronger than the earth’s. The difference is that it is oscillating.”
If the method is proven effective and safe, Lai envisions rooms equipped with magnetic coils to produce the oscillating field.
“It would be very easy. People could come to the room and sit and read or whatever while they’re being treated,” he said. “Or you could set it up in the back of a big transport truck, then drive from village to village to treat people.”
Collaborating researchers include Jean E. Feagin, UW associate professor of pathobiology and senior scientist at the Seattle Biomedical Research Institute; and Ceon Ramon, UW electrical engineering research scientist.
It's been years since I've seen a CRT monitor, I can still hear the pulse of a user pressing that button on a giant monitor. Maybe it's IT guy PTSD
Man I've had one of these in my toolbox forever and I've always wondered how they work. I knew it would be simple (the thing cost about $5) but I'm happy that I finally know the mechanism. Thanks, great video!
I think the steps in the demag may actually have a function. Since there is a magnet on only one side of the demag window, the field gets weaker the further up you go. Some alloys, with certain BH magnetization curves may need a very specific strength to rotate their magnetism at right angles to the length, but not pull the field out the end of the device, as you remove it. The steps give you several choices of demag field strength to choose from. With your fancy field meter, you should be able to find the step that produces the minimum lengthwise magnetization of various objects.
Its so you can quickly determine your in the right hole without even looking, you swipe in a circular motion.. when you ride the stsirs you know your in the demag slot.
I think it’s so that the invisible magic magnet elves that live inside these can go upstairs to bed after a hard day of making things magnetic.
Your "Normal" may be annoying but I appreciate when you take this as an opportunity to share with us your inquisitive nature.
Really impresive, how an easy spacial positioning can make tools looks like magic.
And thanks for sharing a very cheap way to magnetize/demagnetice screwdrives.
That is very usefull to know.
Thank you for this! My father had one of these and I remember playing with it when I was young.
Yes, the stairs are important haha. I remember actually tracing the shape of the opening because that will make the magnetizing/demagnetizing have a stronger effect.
I didn't even know there were 2 kinds of them. Thank you for the great nostalgic trip. I might buy one just for fun.
It's honestly mind blowing to witness such analysis tools in action,
and watch it all from the comfort of my room.
Fascinating video - thank you. I had a play with different thickness screwdrivers in my 'Magnetiser/Demagnetiser'. It seems that for thin bladed screwdrivers, I needed to use the stairs to successfully demagnetise. If I use the lowest stair, then the screwdriver is still able to pick up ferrous materials. Using a higher step successfully removes the magnetic field. I was able to repeat this several times. I guess thin materials saturate more easily, so need to be demagnetised in a weaker field, hence using the staircase.
Magnetic materials kind of short circuit magnetic fields, so it would make sense that a weak magnet would still be able to saturate a thin object, because there is less diameter to spread the field inside the object.
Well then, the magnetism isn’t “removed” so much as “scrambled”. Makes sense, considering magnetic matter is peculiarly UNscrambled compared to most other clusters of atom parts.
IIRC in ferrous metals magnetism *is* a result of ordered arrangement. Scrambling the order then, *is* demagnetising.
@@bakedbeings basically what I said in scientific terms, but I think I went past layman’s terms to goober’s terms, so thank you for clarification :-)
Magnetic materials are magnetic at an atomic level, and form tiny regions of aligned magnetic fields the same way they form crystals when becoming solid. All the tiny magnetic regions cancel out normally, but they can be rearranged to align. Demagnetizing something means removing that alignment in some way, either using other magnets to change them, or heating them until they lose their magnetism, in which case they get their random grains again when they cool.
Magnetism essentially IS alignement of tiny magnets in ferrous material. And thus not magnetic ferrous object is basically a scrambled magnet
Why does everyone keep dropping magnet facts here? Either I phrased my post so badly that you think I don’t know how magnets work ( atomic alignment), or this channel’s community is nerd central. For my sake it better be the latter.
Very nice. Demagnetization was something I thought was impossible with another magnet. Very educational.
Lovely. Not only have I now found out what that tool is that I'll be getting delivered with the toolbox I ordered, but I even learned how it works and what to do if it's not at hand. Awesome!
I think "precision smashing" is my new favorite expression. :D
Everyone thinks your monster magnets have magnetised your cutlery - what they don't realise it's really because of your magnetic personality!
Thanks, Izzie! I guess I can be seen as the positive version of Magneto ;)
@@brainiac75 Not sure which is good vs evil, but Magneto must have the opposite polarity.
you can almost call him attractive
Excellent explanation. I’ve had one of these for many years and still use it. No stepped shaping.
Absolutely enlightening and useful, thanks!
"Let's measure the magnetic field strength of this part"
**INTENSE, DRAMATIC ASCENSION MUSIC**
"Now what about the other part"
**INTENSE, DRAMATIC ASCENSION MUSIC**
Just trying to convey how I felt, when watching the obvious differences appear on the teslameter's screen :) Thanks for watching!
yoooo this right here XD it felt so intense
If you used stronger magnets in the demagnetizers' arrangement does it make more strongly magnetic tools?
I am soooo going to test this
Not sure if you found out yet, but if you put stronger magnets in that shape and use the magnetizer area, it will be a stronger magnet up to a certain point. There is a point of maximum saturation of a magnetic field in a ferromagnetic material. More than that and it is logarithmic growth. So yes, but only to a point. No lifting bagger 238s with a butter knife
No
THANK YOU SO MUCH!!! This was an amazing video, showing such a basic, yet tricky concept in an easy way!!!
I'm new to your channel but I'm really enjoying your videos so far. Looking forward to watching and learning some more
Whenever I wanna demagnetize something, I go like I'm honing it; just swap poles with strokes and decrease angle until it can't pick up a staple. This method seems way better.
Such a great demonstration of the wunderfull mechanisms in the universe. I was never able to imagine the workings of magnetism, so thank you for teaching it so simple but still in great detail and with a high entertainment factor!
That was actually more interesting than I expected, I thank u for the information.
5:40 i cant get over this
Pure sorcery... Does it float or sink?
Does Brainiac???
Fun Fact: You'll see this happen at Restaurants all the time. Reason - The forks and knives you're eating with were destine to fall into the trash bin. Some restaurants have trash bins with VERY powerful magnets that catch any utensils that happen to be scrapped off with the other trash on the plate. Thus saving the Restaurant money on new utensils. Don't worry, they wash them.
So if I'm hearing you right, you're saying the next time I want to eat iron filings at a restaurant, I don't need to ask for a spoon? They'll just stick my fork?
Life changer.
I worked in a cheap restaurant. No utensils. We fed the patrons with dog dishes.
@@tnekkc revolutionary! Your restaurant now has 3 Michelin stars and each meal consists of 300 courses costing 900 USD in total
This explains what I would observe at a Mexican restaurant my mom used to take me to as a kid. It was a really weak attraction but I noticed I could pull the fork with a knife.
I have always wondered how those little magnetizer/demagnetizer cubes worked. How ingenious and very simple. Thank you for sharing this! Another mystery solved!
That's awesome! Never thought it would be so simple
Love your channel, you know how to display the wonder of physics
Thank you very much, Thaumazo. Much more to come!
This is really cool, I've always wondered what made these tools work.
I’m 41 and didn’t know they existed
I love how you matched the music to the graphs on the Tesla meter.
That graph is awesome!
the music during the magnetizing and especially demagnetizing stages gets me every time, so unnecessarily but perfectly intense X'D I love it
It feels like I have just achieved orbit
Thank you! That was genuinely interesting, I learned something today.
Thanks for the fantastic video. Your narration and the dramatic music made it even better.
awsome. I have long wondered but never researched. Love I get this tidbit of information in an entertaining and very informative way!
When you magnetize something you force the particles to align in one direction therefore creating a strong magnetic field.
I have been able to demagnetize various tools without a demagnetizer or heat by hitting them hard a couple of times. Knocks the particles out of alignment making the magnetic feal weaker.
Impact and vibration can actually cause things to become magnets, too, because of the earth's magnetic field. The earth's magnetic field is a lot weaker than being in contact with a magnet, though, so the effect is very weak.
That was one of those mysteries that I've contemplated for years, each time I've opened my toolbox, but never had time to investigate. Thanks!!!
Oh !!!!! Whaouuuuu , you solve AND explain , one mystery in my life !!!! THANK YOU !! It seems I have to check all of your videos !!!!
This is by far my favorite, most essential tool. Love this thing.
Haha, so much simpler than I originally thought and used these. I thought you had to swipe a screwdriver progressively "up the stairs", to diminish the field one "step" at a time. Learning about magnetic fields here, thanks a lot!
That's probably the intended method if you want to diminish the field as low as possible.
Could be a thing for strongly magnetized tools. So far I have not encountered any that needed progressively swiping. The fun thing is how many websites mention the stairs as important for the demagnetization function - making the magnetic field "irregular" x) Thanks for watching!
Very interesting video! If I had seen this a year ago I wouldn't have had to saw open a magnetizer / demagnetizer to see how it worked. But it is also still usable when sawn open. The inner workings are surprisingly simple and ingenious.
Correct English is when "sawn" open not "sawed". He sawed through the plastic, the plastic was sawn open, he used a saw to saw through the plastic which had been previously sawn. Sore is when you cut your finger when sawing.
@@markylon Alright, thank you. I corrected it immediately. But I wasn't responsible for the wrong spelling, it was the translator who showed Google to translate German into English. :-)
I really like your choice of music while measuring the magnetic fields.
Awesome I saw one of these in an electronics catalogue recently and wondered how the heck it would work!
Godt arbejde med alle dine skønne videoer!
Tusind tak, Kasper! Flere på vej ;)
I think the stairs might be used to adjust how strong the magnetism of an object is for different uses. Wouldn’t it have less effect at a greater distance from the magnet acting on it?
The stairs are there to demagnetize (low magnetic force)
This is an amazing video.
Great work!!!
Always wonder how it works. Thanks for the fantastic video!
I used to have a tape head demagnetiser around. This was just a plain coil with an iron core hooked up directly to the mains AC. The alternating of the magnetic field and thereby slowly pulling away the iron core from the tapeheads should also cancel out the remanent magnetic fields. I wonder if the same trick worked with the permanent magnets. Like your videos. Keep up your great channel.
yep it is similar and also universal, like he said in the video you couldnt demagnetize the screwdriver with the wrong demagnetizer, but having an alternating and slowly decreasing field will work for any polarity.
So excited to see a new awesome magnet experiment and demonstration from one of my very favorite youtube channels! I'm saving this one for tonight at home where I can relax and enjoy ! Totally awesome and cheers to you over there in Denmark from Alabama,USA !
Thanks for the explaination !
Very informative video sir!! Thanks for making
Wow! Just last week I was looking this up, but ended up more confused than before. I finally understand!
I wonder if it only works on things like tools and cutlery, or could you magnetise and demagnetise something smaller, like a paperclip or a needle?
It probably works with ferrous materials
should be good for all ferromagnetic materials. the other ____magnetic materials do not support a field without a magnet nearby. Anything ferromagnetic will be affected the same way, needles, paperclips, compass needles, if you get a big enough one, even a turned off electromagnet core for a scrapper crane should be able to be demagnetized. Magnetization does achieve a saturation point though, so you will not be lifting massive vehicles with a magnetized butterknife, even if you have the strength
Great vid, thank you! One disagreement though; it seems the stairs do play a vital role in keeping the inserted tool from getting too close to that pole of the de-mag bar magnet. I don't think it would work it the inserted tool went into that range hence the step barrier.
Very interesting! I love the awe evoking music! Well done!
I've just tried it and my mind is blown away. Wow man, thanks for this content
Always wondered how those worked. I'm quite surprised how simple it actually is!
Currently half way through the video and still can’t possibly see how it could work. The fact I now know it’s going to be simple is insane
I have a lot of magnets at home. But I still bought the demagnitizer. After watching this video I feel like wasting money buying it. 😂
well they are still more handy than rotating magnets in specific way and trying to figure out which way you magnetised a screwdriver, to now demagnetize it
Yeah, me too. That's one dollar I'll never get back lol.
Amazing info. Thanks for this video.
Very good video. Magnets are still very much above my head but I appreciated all the demonstrations and disection
That was interesting; I've always wondered about these tools, but I'm also disappointed there was no special voodoo engineering!
I always thought the staircase slot was housing something like three powerful magnets. What surprised me was finding out that the both slots each hold a single cheap magnet instead of a powerful one. Now I understand why they are as as cheap and mass produced as they are.
Love it! Nature works in such a elegant way 👍
Love the intro where you show the type of danger it is
Can you polarize other metallic objects with other polarized objects ? If yes, I guess that the polarizing will be weaker and weaker ? Maybe a subject for another video :)
I think the point of the stairs is so you can rotate the tool around in the demagnetise hole to shake the Tool around and provide more demagnetisation. Hence the curved edge so the tool easily rotates in the hole.
good vid, intriguing, fun and knowledge-wise
Thank you soo much! I was having trouble with a project, but then you saved my grade! Thank you!
The stairs could be a roughly way to control the magnetization strength
7:06 and I thought it was going to be complicated. Complicated things are intresting
Very interesting! Thanks for the info
wow! i remember watching you a few years ago, but couldnt remember your channel name. good to see you still active on youtube.
Brian: "No BIG hazards this time...just be careful of using sharp things..."
Brian: "And blow torches..."
5:14 Looks like Honda logo
oh my god you’re true
I dig the presentation of this video. Very nice, I like!
Very interesting! I always wondered what the deal was inside. Nice background music.
I'd like to think the magnet wizards causing this just can't be seen by humans.
Are you ICP?
The stairs are so you can remove only a small amount of magnetic pull to adjust the level of force you want. Helps when working with small screws
Why do you want different forces for different screws? Sincere question.
@@aimanyusof8863 Well a small light screw doesn't need the same power of magnetism as a large heavy screw.
Very cool and interesting!
Thank you for wonderful and beautiful knowledge,sir
During my internship I used a de-magnetizer tool to get rid of static in spatulas so I could weigh small amounts of test compounds without it sticking to the metal spatula. It was an electric device consisting of two vertical prongs. You pass it through when its on and boom- it's no longer static. We called it the Harry Potter device. Do you think it could be the same principle, except the base is an electromagnet?
This would be done with high voltages, similar to an ionizer...
I like the section at the beginning where you were trying all the different sides on the magnet. Felt like I was watching a big kid version of Dora lmao. Good video. Learned a lot.
Very scientific way of understand things. Thank you.
Great video, thanks☺️
Just FYI, the steps on the demagnetize area are just there to make sure the two holes can be differentiated even if the markings go away.
That is one unconfirmed theory of yours
@@larsalfredhenrikstahlin8012 * hypothesis.
I think that regarding the intro, your cutlery being magnetic isn't because you use lots of magnets. My parents cutlery is slightly magnetic too, and they don't use lots of science things. I seem to remember reading somewhere that rubbing metal together (like rattling in the drawer or normally using them) slowly magnetises it, but I am unsure of the science of that
I just did some googling on that, the answers I got were related to dishwashers. It's either the heat when they're aligned a certain way, or a poorly shielded motor creating a magnetic field that affects it. Or both.
@@startedtech possibly in some cases, but my family has never used a dishwasher
The sign on the box in the intro says "Attention, Contents Extremely Magnetic" - I think its definitely magnetic because of the magnets lol
I have one of these. I tried to demagnetize my calipers because they were picking up a whole lot of metal dust and schmoo, but it didn't work. I guess I have the wrong pole configuration. Thank you for making this video, it cleared a lot of things for me.
It's amazing! Thanks for video.
I feel like this is the best video that shows that science IS a form of magic that we all got used to it.
at first, it looks like pure magic
but when you know how it's done, it becomes another mundane science thing
Well goddammit. I feel the demagnitiser people are overprotective of their secrets. Staircases indeed.
lol just to throw everyone off!! Most people would never open up a tool or product, not sure why
thanks for making this video
This was really useful. You've actually helped me. Thank you very much :D