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 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.
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.
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
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!
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 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.
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!
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.
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.
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.
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.
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.
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.
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.
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.
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!
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
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.
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.
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.
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.
"Let's measure the magnetic field strength of this part" **INTENSE, DRAMATIC ASCENSION MUSIC** "Now what about the other part" **INTENSE, DRAMATIC ASCENSION MUSIC**
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!
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?
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.
thought it might be worth commenting that i probably wouldn't have subscribed without the eerie music and tone of voice, very cool and interesting video
Very impressive. For decades, I thought that stroking a piece of steel with a magnetic pole would magnetise it, and the way to demagnetise it was to place the magnet in an alternating magnetic field and then removing it. Here is proof that a bar magnet can be used to demagnetise a magnet if the bar magnet is placed PARALLEL to the magnetic axis of magnet and stroked. That way the magnet is subjected to decreasing magnetic field strength in a varying direction. Brilliant! Thank you.
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.
Mind blown. I have one of these (somewhere...) and recall failing to get it to work well. But this is insultingly simple 😂 Thank you for putting us to shame, whilst explaining very clearly! P.S. Mine doesn't have the rounded corner to the "demagnetise" cavity, but does have the steps (which seem plausibly explained in other comments here). I feel enlightened.
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?
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
Very good video. The stairs actually have a purpose: if you start with the lowest and do one for each step, you will demagnetize it almost completely. If you just do the lowest one, then you will retain a little bit of magnetization (although not enough for your test--it will show up if you test with something small like iron filings). This is because, as you show in your video, the magnetic field lines are more and more perpendicular to the screw driver the further you move up the stairs. Of course, as you say, they don't actually "do" anything, so you could just repeat the motion without them.
I bought one off Ali Express. With no instructions I thought it was junk, your video fixed that, thank you! I did however notice that with thin precision screwdrivers, they won't demagnetize unless passed through one of the steps. I assume this places the screwdriver a very specific distance from the magnetic field.
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.
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.
@@hullinstruments I'm guessing it shakes up the iron atoms, making them go in random directions and the fields of all the different atoms cancel out This is just a guess tho idk if it's right
@@Xnoob545 and @HULL GUITARS USA @Xnoob Speakable is thinking in the right direction. The explanation that was given when it was demonstrated to me, is that in ferromagnetic materials, the magnetic domains usually are in disarray. When you magnetize them, you arrange their magnetic polarities in one direction, such that enough of the magnetic domains align in the direction of the applied magnetic field to make the material magnetic. Then when you drop the screwdriver, the impact makes most of the magnetic domains snap back into their natural position, which cancels their previously induced orientation. I don't know for certain if this explanation holds any water, but you can easily verify that de-magnetizing a magnetized screwdriver by dropping it, works.
@@scsft Yes, that is the explanation that I have heard. Magnetizing means to merge individual domains into a single large domain. Hitting a magnet breaks up the domains and they end up in different directions.
Unless my memory is not what it used to be...I remember an episode of MacGyver(The Richard Dean Anderson one)...where he struck a piece of rebar few times and made it magnetized. I will have to see if i can find the clip and check to see if that is correct. Curious if it can be done or if they just fudged the science to make the scene work. Edit...Found this one... ruclips.net/video/QmEi-rWPnAc/видео.html Just keep dropping them they will re-magnetize ...hhaha.
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. :-)
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
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 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.
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?
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
I have always wondered how those little magnetizer/demagnetizer cubes worked. How ingenious and very simple. Thank you for sharing this! Another mystery solved!
lol I stayed up till 6am binging an unrelated channel and came here to unwind, then 5 minutes in my cat comes meowing and meowing, complaining that I'm spending too much time on the computer and wouldn't even let me watch the last 5 minutes without constantly meowing at me lol. So I took it as a sign I should have probably gone to bed 4 hours ago and listened to the kitty who is apparently smarter than me. Either way, I'm just glad now that I've slept, I can finally get closure and find out how the thing works. Cuz I'm stumped and only got to watch as far as the clues he gave. The anticipation's been driving me nuts! It's like watching a great show and then having to stop right before the climactic ending! I NEED CLOSURE! DAMN YOU ADVICE-CAT!
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.
I have always had a slight curiosity as to how those things work. I did not know that they came in North and South Poles. This video got you a subscriber
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.
I've used the magnet sliding to magnetise/demagnetise tools a whole lot. But I bought a bespoke one just so it looks nice. Despite that, I presupposed that the stepped part had magnets in random orientations, to scramble the magnetic domains' orientations.
this is a great way to demonstrate how it works. Perhaps you like to demonstrate how welding-magnets and/or lifting (permanent) magnets with the switch-off options as well in this way. I would like that a lot! Thanks!
I got an electric de-gausser, meant to remove any built up magnetism in mechanical watches (a magnetised regulator spring will make the watch tick too fast.) That might be something worth checking out and pulling apart. Its basically a plastic box with a coil inside, you place the item on top and press a button to de-gauss it, like $10 for a cheap one.
I work with some of the strongest magnets in the world every day, and I find your channel so fascinating. Magnetization is such a cool physics property.
Brilliant! I am researching if I can use a magnetic stirrer as a watch cleaning machine. I was worrying about watch parts being magnetized. Know I guess if I remove those parts while the stirrer is still running I should not be worried. Or should I?
![BLACK BAG - Official Trailer [HD] - Only in Theaters March 14](http://i.ytimg.com/vi/Du0Xp8WX_7I/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.
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?
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 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
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
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.
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.
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!
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
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.
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.
@@N00B283 'Aight ;)
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.
Your "Normal" may be annoying but I appreciate when you take this as an opportunity to share with us your inquisitive nature.
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.
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.
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.
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!
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
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.
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.
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
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
Very nice. Demagnetization was something I thought was impossible with another magnet. Very educational.
"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
5:47
Brainiac75: *sticks rod in hole
The music: aaaaaaa *aaaaaAAAAAAAA*
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!
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)
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.
thought it might be worth commenting that i probably wouldn't have subscribed without the eerie music and tone of voice, very cool and interesting video
I think "precision smashing" is my new favorite expression. :D
Very impressive. For decades, I thought that stroking a piece of steel with a magnetic pole would magnetise it, and the way to demagnetise it was to place the magnet in an alternating magnetic field and then removing it. Here is proof that a bar magnet can be used to demagnetise a magnet if the bar magnet is placed PARALLEL to the magnetic axis of magnet and stroked. That way the magnet is subjected to decreasing magnetic field strength in a varying direction. Brilliant! Thank you.
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.
Thanks for the fantastic video. Your narration and the dramatic music made it even better.
Pure sorcery... Does it float or sink?
Does Brainiac???
Mind blown. I have one of these (somewhere...) and recall failing to get it to work well. But this is insultingly simple 😂 Thank you for putting us to shame, whilst explaining very clearly!
P.S. Mine doesn't have the rounded corner to the "demagnetise" cavity, but does have the steps (which seem plausibly explained in other comments here). I feel enlightened.
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
Very good video. The stairs actually have a purpose: if you start with the lowest and do one for each step, you will demagnetize it almost completely. If you just do the lowest one, then you will retain a little bit of magnetization (although not enough for your test--it will show up if you test with something small like iron filings). This is because, as you show in your video, the magnetic field lines are more and more perpendicular to the screw driver the further you move up the stairs. Of course, as you say, they don't actually "do" anything, so you could just repeat the motion without them.
This is really cool, I've always wondered what made these tools work.
I’m 41 and didn’t know they existed
I bought one off Ali Express. With no instructions I thought it was junk, your video fixed that, thank you!
I did however notice that with thin precision screwdrivers, they won't demagnetize unless passed through one of the steps. I assume this places the screwdriver a very specific distance from the magnetic field.
Love your channel, you know how to display the wonder of physics
Thank you very much, Thaumazo. Much more to come!
Oh !!!!! Whaouuuuu , you solve AND explain , one mystery in my life !!!! THANK YOU !! It seems I have to check all of your videos !!!!
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.
I really like your choice of music while measuring the magnetic fields.
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.
wow! i remember watching you a few years ago, but couldnt remember your channel name. good to see you still active on youtube.
You can also demagnetize a magnetized screwdriver by dropping it on the floor a few times from about 1-1,5 meters height.
How does this work?
@@hullinstruments I'm guessing it shakes up the iron atoms, making them go in random directions and the fields of all the different atoms cancel out
This is just a guess tho idk if it's right
@@Xnoob545 and @HULL GUITARS USA
@Xnoob Speakable is thinking in the right direction.
The explanation that was given when it was demonstrated to me, is that in ferromagnetic materials, the magnetic domains usually are in disarray.
When you magnetize them, you arrange their magnetic polarities in one direction, such that enough of the magnetic domains align in the direction of the applied magnetic field to make the material magnetic.
Then when you drop the screwdriver, the impact makes most of the magnetic domains snap back into their natural position, which cancels their previously induced orientation.
I don't know for certain if this explanation holds any water, but you can easily verify that de-magnetizing a magnetized screwdriver by dropping it, works.
@@scsft Yes, that is the explanation that I have heard. Magnetizing means to merge individual domains into a single large domain. Hitting a magnet breaks up the domains and they end up in different directions.
Unless my memory is not what it used to be...I remember an episode of MacGyver(The Richard Dean Anderson one)...where he struck a piece of rebar few times and made it magnetized.
I will have to see if i can find the clip and check to see if that is correct.
Curious if it can be done or if they just fudged the science to make the scene work.
Edit...Found this one... ruclips.net/video/QmEi-rWPnAc/видео.html
Just keep dropping them they will re-magnetize ...hhaha.
I'm new to your channel but I'm really enjoying your videos so far. Looking forward to watching and learning some more
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 love how you matched the music to the graphs on the Tesla meter.
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.
Love the intro where you show the type of danger it is
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
Thank you soo much! I was having trouble with a project, but then you saved my grade! Thank you!
Godt arbejde med alle dine skønne videoer!
Tusind tak, Kasper! Flere på vej ;)
This is by far my favorite, most essential tool. Love this thing.
5:40 i cant get over this
Very good video. Magnets are still very much above my head but I appreciated all the demonstrations and disection
Thank you! That was genuinely interesting, I learned something today.
Excellent explanation. I’ve had one of these for many years and still use it. No stepped shaping.
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 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.
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...
Thanks!
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
awsome. I have long wondered but never researched. Love I get this tidbit of information in an entertaining and very informative way!
Brian: "No BIG hazards this time...just be careful of using sharp things..."
Brian: "And blow torches..."
That was actually more interesting than I expected, I thank u for the information.
The stairs could be a roughly way to control the magnetization strength
I have always wondered how those little magnetizer/demagnetizer cubes worked. How ingenious and very simple. Thank you for sharing this! Another mystery solved!
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.
lol I stayed up till 6am binging an unrelated channel and came here to unwind, then 5 minutes in my cat comes meowing and meowing, complaining that I'm spending too much time on the computer and wouldn't even let me watch the last 5 minutes without constantly meowing at me lol. So I took it as a sign I should have probably gone to bed 4 hours ago and listened to the kitty who is apparently smarter than me. Either way, I'm just glad now that I've slept, I can finally get closure and find out how the thing works. Cuz I'm stumped and only got to watch as far as the clues he gave. The anticipation's been driving me nuts! It's like watching a great show and then having to stop right before the climactic ending! I NEED CLOSURE! DAMN YOU ADVICE-CAT!
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've just tried it and my mind is blown away. Wow man, thanks for this content
I'd like to think the magnet wizards causing this just can't be seen by humans.
Are you ICP?
Entertaining, educational, amusing, utilitarian, informative, demonstrative and whatever positive adjectives I've missed!
Wakodahatchee Chris
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.
I have always had a slight curiosity as to how those things work. I did not know that they came in North and South Poles.
This video got you a subscriber
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
the way you talk is somehow nostalgic to me. not sure if it reminds of something specific but man i feel like a kid
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
I've used the magnet sliding to magnetise/demagnetise tools a whole lot. But I bought a bespoke one just so it looks nice. Despite that, I presupposed that the stepped part had magnets in random orientations, to scramble the magnetic domains' orientations.
this is a great way to demonstrate how it works. Perhaps you like to demonstrate how welding-magnets and/or lifting (permanent) magnets with the switch-off options as well in this way. I would like that a lot! Thanks!
Very interesting! I love the awe evoking music! Well done!
That's awesome! Never thought it would be so simple
whoever comes up with this thing is a genius.
I have nothing to say... Just thank you for making these videos!
OMG I can't believe it. It's so simple. Man, I love you
Love it! Nature works in such a elegant way 👍
most useful video about magnetics so far
لك جزيل الشكر و الثناء Thank you from deep deepest depth of my heart 👊
I got an electric de-gausser, meant to remove any built up magnetism in mechanical watches (a magnetised regulator spring will make the watch tick too fast.)
That might be something worth checking out and pulling apart.
Its basically a plastic box with a coil inside, you place the item on top and press a button to de-gauss it, like $10 for a cheap one.
Very interesting! I always wondered what the deal was inside. Nice background music.
I work with some of the strongest magnets in the world every day, and I find your channel so fascinating. Magnetization is such a cool physics property.
That graph is awesome!
I’ve been subbed for a few good years now. Always loved your content. Keep it up…. I might chuck in a bit of money some time in the future
I love how you make magnetizing and demagnetize your stuff, or visualizing the properties, like a holy revelation with that audio track you play.
Brilliant! I am researching if I can use a magnetic stirrer as a watch cleaning machine. I was worrying about watch parts being magnetized. Know I guess if I remove those parts while the stirrer is still running I should not be worried. Or should I?
Thanks
THANK YOU SO MUCH!!! This was an amazing video, showing such a basic, yet tricky concept in an easy way!!!