Electromagnet With Supermagnet Core
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- Опубліковано 4 жов 2016
- I run some wire around a large neodymium magnet.
Here is the other video I mentioned: • Electromagnet in Liqui...
Excellent video on the subject by Matthias Wandel: • Magnet repulsion lifts...
Help me make videos by donating here: / codyslab
Shorting out the contacts: • Video
5 hours later... Ok, that's good, but I think we can do better. So, I've hooked it up directly to a nuclear reactor.
Regality xD
Actually he commented he plans to make one, that's why he is collecting tritium vials I believe
Tritium is the source of fuel for nuclear fusion in a Teller-Ulam nuclear devices. Cody would need to collect and somehow handle radioactive isotopes such as uranium-235 to create some form of RTG
I'm pretty sure that he plans on making a fusion reactor. Fission is much more dangerous and harder to control. Some people have made fusion reactors that fit on a table!
Doesn't generate a net power, though.
"It repels it the other way"
Attraction: Am I a joke to you
I was looking for this
Or something like the coil is moving down against earth
Every scientist ever: "Let's see what happens!"
*Adds liquid nitrogen*
"Let's try it again!"
reminds me of king of randoms
Really cold things behave like super weirdly. Sometimes matter denatures when ya get cold enough- it's some super neat science.
And you can get that shit from your mechanic, so ayyy.
People seem to think that using a permanent magnet as the core of an electromagnet will give a stronger electromagnet than using an un-magnetized core. Permanent magnets have a large static field but very little "amplification" of the field from an electromagnet. Their permeability is close to that of air because they are fully saturated by their own magnetization. So, the field you get is pretty much just the sum of that from the permanent magnet and that from the air-core coil. Materials like un-magnetized iron, on the other hand, have a huge permeability, often hundreds or even thousands of times that of air/free space, so they multiply the field generated by the coil by that factor. This only works up to the point where they saturate, though. So, in the end, using a PM as a core just gives you about the same total field as you could get by using an un-magnetized high permeability material for the core, as is normally done in electromagnets.
At extreme high field strengths though, just about any core material you use is going to saturate early. The most powerful magnet I've made was air cored.
This
Thanks
I just did some research into this a few days ago.
It lead to an Amazon order of dyprosium.
Element 66
Check it out. We're already a decade behind.
If they did this in electromagnets, to make them more efficient.
.. we'd be out of the material by the end of the year.
Iron is like copper.
Used because of its abundance.
But he can reverse the polarity and "turn off" the magnet. Which is super useful. You can pick up ferromagnetic stuff and drop the stuff *very* efficiently.
Cody did a good job of making that really powerful magnet look as unimpressive as possible
Yup.
Yup, was pretty annoying. He made the whole friggin' neodymium magnet jump up, but he went "nope, we've got to levitate the itty bitty piece of pyrolytic graphite".
I enjoyed it. Orders of magnitude (infinitely?) better than what you've to offer ^_^
ahaha precisely
I'd just like to add that cody's awesome and I loved this video.
It's possible you might have gotten more magnetic field with a simple iron core. Iron saturates at abojut 1.6 tesla, whereas the nedinium magnet's flux density is less than that. Getting really high flux densities beyond the magnet material's saturation point is difficult, so best to start with something that has a nigh saturation point (iron)
What's the flux density of wood, Matthias? :P
What's the flux density of a wasp?
Didn't expect to see you here :D. Your videos are great btw!
+Matthias Wandel That wasn't the point of the experiment though..
Wow, two of my favorite mad scientists on UA-cams.
Cody, why doesn't your magnetic finger implant tear through your skin and stick to the super magnet?
Think about how strong a magnetic field would have to be to put enough force on something the size of a ballpoint to pull it through the skin.
i cant even think of how strong it would need to be
strong enough to pull the iron out of your hemoglobins
I don't think you could pull Iron out of your blood withe any magnetic field. because it is bound to your blood by molecules.
kfftfuftur thats how strong the magnet has to be
Codys new door bell!
2:10 I yelled 'NOPE' predicting what was about to happen. Was not disappointed :)
idgaf
HeavenHammer You cared enough to comment :)
Richard Smith seems legit
2:10 The force is strong with this one.
Cody, I'm pretty certain the first way you applied current to the coil had the field created going in the same direction as the permanent magnet.
When you switched the direction of current, such that the coil tried to center concentricly on the magnet, the effect was making the return flux path turn much tighter and stay between the coil and the magnet.
Consider when you initially applied current to the coil in the original polarity and the coil moved up until it's bottom opening was at the top surface of the magnet; if the fields had been in opposition, that should be the most difficult position to obtain, not the position it comes to rest. The motion indicates the fields were of the same direction.
You will have to secure the wire well if you wish the fields to be additive.
The two fields will always "add' up so to speak, in the sense of increasing the total amount of magnetic field present. But you are correct; when the magnet tries to center itself, it is because the coil's field is oriented opposite that of the magnet, hence the coil serves to enhance the return flux around the magnet (which is always the opposite polarity of the magnet), and consequently the flux inside the magnet as well. This arrangement adds more flux within the magnet and the coil assembly, but leaves much less flux available outside the assembly. If you can get them to stay together with the same orientation, you will add a lot of additional flux by powering on the coil, effectively creating a larger magnet. However just as is the case with larger magnets, the flux density near the center is usually less than that of a smaller magnet, because the return path is longer. So with polarities opposite you get stronger flux density where he placed the chip. With same polarity you get a much larger magnetic field, but it is not as concentrated.
4:23 "So I've now roughly doubled the voltage" Seriously Cody... Where do you get all these batteries hahaha
I know I was like how many fucking car batteries does this guy have laying around??? haha
@@Nik.No.K yes
Neighbors woke up to no batter's in there cars lol
Where is your mercury blood test?
Phoenix AF yes
well hes not dead so it couldn't have been that bad
Last mercury video says the 17th for a date of test return
Thank you
That's my birthday
I want a tiny magnet in each fingertip. You could feel the magnetic field in much better resolution that way I'd bet.
In each fingertip?
Not planning on holding your fingers near each other for a while.
Either way it's get pretty uncomfortable or painful.
..your fingers constantly trying to rearrange next to each other.
🧲🧲🧲
This was really interesting Cody! I love your experimentation and just learning new things with us. Thanks for putting this up :)
You momentarily had the largest home made solenoid I have ever seen. Sweet video.
+Cody'sLab Cool project. Definitely a thought provoking experiment when trying to visualize physics.
Actually the reason that the spark jumps repeatedly to make the "bell" @ 9:00 is because of the capacitor you added. Basically, the capacitor is being charged by the battery, and when you short it, all of the current goes through the inductor (coil) and the capacitor is emptied. Next when the magnetic field collapses, it sends the 90 degree phase shift of the capacitor charge back through the system, so double whatever voltage you have the batteries wired for at least was what you were seeing as the brilliant spark. You could achieve this affect with the wire always connected if you had a correctly matched inductor and capacitor. In this case, it looks like the batteries provided so much current that they saturated the circuit and did now allow resonance to occur when the wire was securely attached. Looks to me as if the wire is being pulled towards the terminal by the higher voltage spiked caused by resonance. Then the end of the wire was melted greatly increasing the resistance for the time of the arc. This dampening affect could limit the current into the circuit and allow resonance.
Source: my degree
TL;DR
TL;DR: Get an education
Also, the coin being slammed back down at the disconnecion point of time is due to the kickback voltage from the coil. could have been gotten rid off by adding a very beefy diode...
so it's basically a lc resonance circuit? Brilliant!
I've done this exact same thing with a 20v power supply, fat inductor, and a magnet from a hard drive. Lovely sparks!
Yikes man, sometimes you scare me. A few times around 9:30-ish you came very close to having a 100V 600A arc flash in your face, while swinging the ends of those battery cables around near each other. Also, those gloves were probably sufficient for the voltage levels you had on the batteries, but the inductive kickback from that coil was probably a couple kV, making it 'uncomfortable'.
check out the video at the bottom of the description.
yeah why wasnt he shocked? those 12 volt batteries generally carry around 7 amps
WAJVFBG If only he knew as much about women as he did electricity...
Good on you Cody. You put a lot of work into your videos and it shows.
You've actually demonstrated a VERY useful feature that few people have recognised in the realm of electromagnetic force application ... Bi directional solenoids!
In a normal solenoid when the steel core is outside of the coil, irrespective of the current direction, the core is always attracted inside the coil.
Using multiple small neodymium magnets makes it very easy to produce a push/pull solenoid WITHOUT using springs.
By utilising a non ferromagnetic core (e.g. nylon rod) attached to the end of a stack of neodymium mini magnets then supportive current flow will pull the core into the coil and vice versa it is pushed out. Either end of the core can be used to pull or push clearly.
BIG advantage of this becomes obvious when considering mechanical locking and interlocking mechanisms as ONLY a pulse of current, not continuous current is required to maintain a stable position (only when the core is horizontal, otherwise gravity puts a natural bias into the system).
Who'd have thought ... A bistable solenoid that maintains its position WITHOUT power. Useful in power outage situations potentially!
here, hold on, let me grab a huge bucket of ln2 i just have laying around...
I knew a guy who went to an estate sale for an old miner in Nevada and the dude had a literal bucket of TNT and another bucket just labeled "radioactive stuff" with uranium ore in it. I love old farmers and old miners since they often have stuff just sitting in some back closet thats impossible to find nowadays, I've got a bottle of cocaine infused wine from pre-prohibition times and I've known guys who've found live grenades, human bones, and other WW2 era war trophies.
That is the Cody difference. At first, you see just some curious guy fooling around with cheap junk (basically me). He even uses the bottom of a broken bottle as a glass cover. Then you realize he is SERIOUS about what he does, and just gives absolutely no f***s about irrelevant things. He is the master at prioritizing "function" over "form", in a world where people are so ignorant and overwhelmed that "form" is the only metric to which they can perceive quality. Iphone product anyone? ;)
@@reina4969 Farm house, not Bauhaus
How else would you cool your pc’s cpu
Cody, to avoid getting iron crap all over your magnet, just wrap it nicely in plastic. i do that for alot of smaller magnets :)
Cody is probably the first person to conduct superconductor experiments in a cake bucket.
I appreciate what you're doing Cody I enjoy your channel keep up the great work! 👍🏻
I think I just saw you at Cal Ranch when you were checking out, but I was too nervous to say hi. I just wanted to say I enjoy your videos, and your channel is one of my top 10 favorites on UA-cam.
I was getting bunny food. Hi anyway!
Cody you have made the worlds most deadly bell how do you feel XD
Baracus 11 todo mine too
Baracus 11 his channel is my top
Nididinium? It's Neodymium! Love your channel, anyways!
neodidlium
I've gotta say, Cody you are one lucky guy. You've got this huge, beautiful property to play around on and explore, access to tons of fun equipment and chemicals, a beautiful gf, a great family. You seem like you've got things figured out in life, and that's something I really like about you. Anyways, I love these videos and I've found they've been getting better and better lately. So whatever you're doing, keep it up! Cuz you're doing something right.
Cody, I swear you're my spirit animal. Keep being awesome.
Cody you should make a battery backup system with all those batteries.
I've just finished mine.
Was that piece of rusty metal at the bottom reducing the magnetic flux that flowed through the coils?
shouldnt
well wouldent it?????????????
The irons nodes would have likely already have been aligned by the perm magnet. What Cody should try though is extremely low voltage high current on pieces of silver, it would be like the bars of metal in the rotor of a squirrel cage motor only even better because of how well silver conducts.
nothing more common than having eight charged carbatteries laying around...
+Cody'sLab you can weld with 2 car batterys, becareful that might be able to make a blinding arc
you never fail to make me enjoy what i see
Thank you Cody for the video I always enjoy them. this was cool, keep up the good work.
I have a magnet in my finger too and I would be scared as hell to even go near a magnet that big let alone hold it in the same hand as my magnet implant.
Does the insulation on the wire and the plastic central part of the coil have any effect on the current that is applied to the magnet?
Yes that weekens it but I made it as thin as I could.
Thanks!
Would you try it with a single thread of insultion-coated copper wire? Takes a long time to make a spool like that, doesn't it?
I always thought the wire in electric motors and transformers wasn't insultaed..
I don't think it is, every example you see of an electromagnet seems to have exposed copper. that's why I asked. curious to know a % difference without the insulation because it would also mean a much tighter and closer coil
Glad to see your channel is taking off! I came in around 100k subs, and that seems like just a few months ago, now your quickly getting close to 1 million. Keep it up cody!
This helped me understand so much about electric motors and generators
why do you have so many batteries sitting around lol
Any mad scientist needs a few hundreds of batteries, you know for science ;)
Why dont you?
he has no electricity running to his house
And you know how he is with lead, never can have enough.
I too have 12 lead-acid batteries laying around :)
Thank you for your work and lessons.
Cody. I just want to say I really enjoy the vids. I have actually learned a lot from u keep up the great work
Cody, you should try using a really and an oscillator to test if a high frequency of on and off will levitate it
If you want I could probably make you a strong relay that can handle that current and also I could make you a dc oscillator that you could use
You might notice that the faster I switched it the lower the silver would jump so I doubt it would levitate but I'd love to give it a try.
cody when will we see more of the coil gun?
If you have got a fairly powerful car Subwoofer Amplifier you could also use a phone as a tone/frequency generator and try to find the resonant frequancy of the system !--> achieve some kind of levitation
i had a concept fore a original jet engine design i was wondering if you could make it
Cody, how do you go through airport metal detectors with the magnet fragments in your finger? (assuming you fly)
just do it, they are looking for large things like guns. a tiny thing smaller than a grain of sand is undetectable
how do old ladies with false hips? or someone with a plate in their head
it beeps, they look, nothing there>move on
okay, I didn't realise they let you through that easily. I know someone who has shrapnel in their leg and they have a very hard time going through security, so I assumed you would as well. (wonderful videos by the way)
Really just depends on how tight the security is in your country. They once let me through, although something (probably my belt) activated the sensor, without checking me. On contrast, in England they took a folding comb I had with me because "It resembled a knife".
Yeah, here in the US you have to remove all metal except things like buttons on shirts, zippers and medical devices.
Awesome!
I'm so early! I just wanted to let you know Cody that watching your videos has helped me IMMENSELY in my college chemistry classes (OChem, Gen chem 1/2, etc.). Every time I am learning a new concept, I think about the videos that you have made about them, which helps me to visualize the process. Just...Thank you for doing this. I and hopefully many others appreciate it.
-Alex
2:12 I wasn't paying attention and this scared the shot out of me
2:12 haha looks so funny, like magic :)
As Clarke used to say "Any sufficiently advanced technology is indistinguishable from magic”
Very true!
Sparks flying, wires melting; Cody: "I've made a bell."
New meaning to silver bells now... thanks Cody!
How in the world would you ship that super magnet without it attaching to the truck
if that came in the mail, hopefully there were no computer components that had data on them. Hard drives do not like magnets
It came in a big wooden box.
with lots of padding
Brainiac75 has a video explaining exactly how these magnets are shipped. Its called "How is a 6" neodymium magnet delivered?"
Iron shielding is used to enclose much of the magnetic field. And fyi, hard drives have quite powerful magnets inside them. Pull one apart, and you'll find them. You will need some Torx screwdrivers
Could you make a magnetic jackhammer that acts like the silver jumping up and down on the magnet
not very practical.
but some compressors use this effect to move pistons, because it doesn't shake as much as the ones with rotating axle.
Cant believe I haven't subscribed after so many years of watching. So glad mercury vid went viral, keep up the good work.
Good video Cody, this was cool to watch!
Couldn't you make an automatic coil gun with the wire bouncing back and forth with that, plus some sort of rapid clip to load the metal you are shooting?
Adam Yarris he tried making one they are called rail guns but with basic wiring you can't really shoot them very far but I'm sure the military have made huge ones that shoot them miles
He should make collab with collin furze lol
needaname That would be the best collaboration like ever
100 miles at 5700 mph to be more accurate
Interesting. Could you try to measure the coil resistance when warm and cold? see how close it gets to zero.
Also, are you familiar with podkletnov's claims? spinning super conductor disc with a hole in the middle, agitated by high voltage shock supposedly creates a gravitational disturbance pulse column perpendicular to the spinning disc with significant range.
He has indicated that it works with a copper disc as well. Might be very interesting to play with. A division of Nasa actually experimented with it. Word is they sort of had results but didn't want to pursue it further.
commenting to bump this. :p (Thats how this stuff work, right?)
Careful, bullshit at such high concentrations is very corrosive to brain matter.
complete crackpot nonsense
+Ada, is that why nasa looked into it? you can check. They did.
I like when you say something and I get it. I feel so excited to understand things.
Love your video's cody! Can't stop watching anything you do. Always learning from your video's and you make them very understandable. I don't study anything in science, rather economics however this got me a bit wondering of what I might want to do. Please continue making your video's!
The way you are holding the terminals of a 120V, ~1000A current potential battery bank almost in your bare hands SO gives me the heebie jeebies ... Specially bringing the contacts so close to each other and with super cool liquids around that make plastic brittle. Your hands were just isolatated from the voltage by thin rubber gloves? IF you SHORTED those terminals, part of the metal contacts would have just evaporated/exploded, potentially damaging the gloves and in a blink and you would have been hanging on to the terminals and couldn't let go cause its DC, thereby slowing burning to death. In the worst scenario. Maybe your body resistance have been high enough for you to just jump away from it but gosh, what a gamble.
Cody, please short a fully charged battery bank like that out a few times in a controlled way for "educational prorposes" :) I think you don't have enough respect for the amount of power potential you are playing with here. 120Vx1000A = 120.000 Watt (at least for a fraction of a second until the conductors heat up).
I don't think 120v dc will do much more thst sting a little if you touch it. The 1000A won't run throught your body with so little voltage.
But there sure is a fire and possibly an exlopsion hazard.
Just let him be him idiot. He wants to do this he can. It’s not your job to tell him what to do. If you don’t like what he does then leave.
You have to remember this is DC which is very safe compared to AC
The human body has roughly 2k ohms. 1 amp is deadly, but that means you need upwards of 1.5V before it gets deadly (under normal conditions, (dry skin, ect...) so it's still better safe than sorry unless you really know what you're doing, but yeah, I wouldn't really be worried about a measly 120V. Probably the worst you'd get would be a numb and pained arm for a few minutes. And, come to think of it, that was AC when that happen to me :))
if you still had a whole magnet in your finger, would it be a bad idea to be around a big magnet like that.
what I mean is, is it only that you have a small magnet shard left in your finger, that the big magnet doesn't have enough strength to rip it out of your finger.
Ryan Burdick good question
robbie cooper
The reason I ask is because many of my friends have high power magnets, and that's why I've been hesitant to accualy get the implant.
Ryan Burdick get it don't worry Magnet finger
I'm purely guessing based on my knowledge from watching these videos, but I think the original implant may have been a different story. What he has now probably doesn't have enough mass to even be uncomfortable, pretty sure he would have said so. Looking at 1:45 of the video Magnetic Finger Update; 2 years later
It's probably the size of a pen ballpoint. I think just slowly moving your hand toward a magnet and stopping when it becomes uncomfortable would be safe, it's surely only going to able to rip out if it starts hurting.
A huge like for Cody's Lab and The Action Lab
Per the usual video... just a joy to watch and learn some more science :D thanks for that and keep up the great work!
Was the silver acting like the copper wire creating its own field and jumping whilst making electricity?
yes
look up lenz's law.
Jebus Gaming as a general rule, conductors will resist a change in magnetic field. Someone else mentioned Lenz's law and I believe that what the whole principle is based on. When the silver resists the change it magnetic field, an opposite magnetic field is created by the silver and this creates a force due to the interaction between the two fields.
John Fraser yeah I thought that, so you could use silver instead of the copper wire if you really wanted to
You can build a warp drive with that contraption, all you need is superconducting wire and a vaccum to prevent the liquid nitrogen from vaporizing.
Great videos from a new age mad scientist!
Cody you would make an awesome teacher!
WE NEED MORE POWER
Cody there is an experiment talked about by the ex head of lockheed skunk works where you tape two strong neodymium magnets together so they are repelling each other then drop them from a high place and they take far longer to fall than an equivalent weight of iron - repelling magnets clamped together fall slow.... how about doing that one?
That's silly. If the two magnets were taped together, they would not be moving relative to one another while falling, therefore no force would be produced. Any time an object is slowed by a magnetic field, it is moving relative to the object producing the magnetic field.
I'm guessing the Lockheed guy was a business major in college.
Arduino Tronic ...
i would guess... the magnets fall through a tube of some type slower... not simply fall in a room.
" they take far longer to fall than an equivalent weight of iron "
I can tell already by the wording here that this claim is utter bollocks, because as we all learned in school, the weight of an object has absolutely no bearing on how fast it falls.
*in a vacuum, and i doubt that claim holds for a black hole vs a feather.
Cees Timmerman Doesn’t have to be in vacuum
Wow my physics course about electromagnetism just started. What a timing, thx for the video!
I got the shivers when you reminded me of the magnet implant...
Cobalt, Dysprosium, Sulfur, Lanthanum, Boron.
I thought you removed the minute piece of magnet from your finger?
He said he missed it, "it was like removing a sixth sense."
Topblackbird He removed most of it, but he said there's still a tiny shard that he couldn't get out, so he can still sense fields, just not as strongly
He removed the majority of it, but accidentally left a bit in there. The reason he tried to remove it in the first place was because it snapped
Usernameless User
Got it, thanks!
he replaced it with one that he gold plated
Cody will you please make a video on rubbing gallium and I think it's indium together, it will make a liquid Alloy which should be like a non-toxic mercury
Legend has it that Cody will be the one to invent the hoverboard.
Put the silver coin in a tall thin glass. The coin will levitate.
Why do you have pieces of magnet in your hand?
Budred123 that's what I was wondering
You mean you don't? 🙃
it is called the ED not the ER
Dude im so fascinated by your knowledge, It motivates me to learn as much as I can. Im on the path to becoming an electrical engineer :)
Don’t stop making vids ur inspirational thks
I though your finger rejected the magnet and you had to remove it
Bits of broken magnet are still stuck in there, and haven't caused more infection.
I would actually really like to do that. Add a magnet to my finger.
i heard that Cody most of the time reply's to comments
Well I do read most of them.
+Cody'sLab lol
love your vids Cody! Glad you brought the metal refining back! I'm a keen metal detectorist and was wondering do you own a metal detector?
cool experiment for building speakers. cheers!
You do what I wish I had done.keep up the good work so I can live vicariously thru you LOL
first, eat my dust suckers
Dust suckers?
Sounds unpleasant
Not even close.
that's why they call them vacuum cleaner s
he says "neodinium" differently every time
Cody. Thanks mate. Keep it up
I forgot the reason I found your channel was the magnetic implant episode, and I've been subscribed ever since
how to get electrocuted 101
I put on rubber mittens...
i know, but i totally would get killed
Holy moly Cody, what I'm wondering is how you got so many batteries and jumper cables
Also, what would removing the plastic that holds the coil and just wrapping the coil around the magnet do?
Cody will not reply to this comment.
Probably not.
Knew it
Lol
Dark Games - Minecraft lol
Cody'sLab Don't encourage his reverse psychology
was it just me or was that time lapse at the end really satisfying to watch?
Magnets are so cool! I am fascinated with the potential of futute technology. The possibilities are incredible!
Magnets (and basically electromagnets) are being used in electronics for a very long time now, so I wouldn't really call this a technology of the future, but yeah, experiments with those are super interesting and they look awesome ;)
cool demo, nice side effect plasma with the 'bell'.
It's really cool how you feel the magnetic field with the magnet in your hand, it's like another sense, like a cyborg or something (or bird with the compass in their head) It's just ingenious!
9:18 the worlds most dangerous school bell. you've done it again cody!
Give this man a television show!
Cody, nice video! I appreciate your thoroughness. Would have been interesting to see how the number of turns of wire or possibly how the types of wire impact the magnetic fields. Thanks again buddy!
I love this channel you deserve more subs
We need more geniuses like you in our world
A Great video, Thanks for sharing.
I can't wait for the coilgun video!
I wasn't surprised at all when wind messed up Cody's delicate magnetic experiment and he fixed it with a piece of broken glass.
You should team up with Matthias! Your great knowledge in chemics and physics and Matthias´s huge engeneering talent would make an awesome combo! I´d love to watch the projekts developing during this collaboration!
Great video