Fun fact - I just learned that most cheap rice cookers use a magnet to "sense" when the rice is cooked. Basically when rice is cooked, the temp of bottom of the pan will go up fast, the magnet gets DE-magnetized at that temp (about 114C I think) and turns off the main heat.
One of the neat things about ferrite magnet motors is that the motor stator magnet can be assembled into the motor frame before being magnetized. Takes a lot of work out of fighting with the magnetic attraction and repulsion during the assembly process. Once assembled, the assembled frame is dropped into an electromagnetic fixture, and then the field magnet material becomes actual magnets.
The stepper motors at work were recharged by putting a powerful HV pulse through the coils and are good for another 2000 hours of use. The magnet itself was made of AlNiCo
The history you gave of magnets in general was a real eye-opener for me. I felt a bit like my six year old cousin when she heard that in “the olden days”, people didn’t have phones!
@@antrog1895 I met a teenager with a brass keyring that’s a model adding-machine, the kind with a roll of paper and the lever at the side. These were still being used in the office of an electrical goods store that I worked at in the 1980s. This lass thought it was a typewriter.
@@antrog1895 I was in the newly-independent Baltic countries in the early-mid 1990s, and since we seemed to have no language in common (later I realised most older adults where I was knew German). In Lithuania and Latvia, as I was a foreigner, the checkout ladies would whiz the abacus in a snap and then just point to it. A somewhat different abacus, to Hong Kong, I think - these were curved, and maybe set up a bit different. They were incredulous that I couldn't read it. I never did learn how. It was easier to just learn Lithuanian!
Fun fact: if you lay a rod of soft iron on the north south line and tap the south side, then you will magnetize it. If you turn the magnetized iron bar east and west and tap the west side repeatedly, then you will demagnetize the bar. Separately, there is a paper over on my subs tack that talks about making more powerful magnets by changing the shape of their magnetic moment by spinning it in the magnetic field and/or spinning the magnetic field itself while magnetizing a material. It's just a hypothesis, I don't know if it would work or not. 😅
@@nickkitchener6155 I don't have money but I have an old D-Link voice over IP box that still works with pulse dialing so you could use an old-school rotary phone with modern phone services. I had it set up as a bat phone for a bit.
@@nickkitchener6155 Once saw an episode of "American Pickers" (iirc) where they tried to buy one while they were in the country. Unfortunately it turns out they're unbelievably expensive due to decades of ubiquitous global interest in Dr Who. They tried to buy one from a guy who specializes in restoring them, he had several of them in various states of (dis)repair out back, they couldn't afford any.
William Sturgeon was the inventor of the DC motor and the first electro magnet. Fascinating and largely overlooked, Born dirt poor near Kendal and apprenticed to his father as a boot maker. Eventually he ended up in the army at which time he taught himself to read, write and speak half a dozen languages. His passion became scientific experimentation and invented the first practical electric dc motor, communator and electromagnet.. Sadly he was before his time and although producing working models to display he failed to generate financial backing for what was seen as curious though interesting. He died a pauper and is buried just outside Manchester.
I remember having neodymium magnets all over our house in the early 80’s. My mother worked for a company fabricating geophones that were used in ground penetrating radar oil exploration. Any weekend she had to work I had to go to work with her. I learned to solder the components and my reward was always a handful of neodymium magnets.
I am very interested in seeing your demonstration of ball milling to make the Iron Nitride! Thanks for the video. Re Strength of the magnet -- just to clarify, doubling the strength of the magnet also means that the input power to drive the generator will also double. So, for those that might misunderstand, you don't get double the generated power for free...
So generators would be smaller as they would use less copper, or even smaller number of smaller magnets to exhaust kinetic energy source. Maybe less shafts, cogs, chains and belts as we would be able to place generators in places where they didn't fit. Less energy losses. Still extremely exciting.
@@szogun1987 Well, typically Permanent Magnet Motors (and therefore generators that use permanent magnets), are rarely found in horse powers over 1 to 10. Once you get larger than that, they switch to field wound magnets which don't really use a permanent magnet like Neodymium. (It's because of the issue with Saturation that was explained in the video, field wound electromagnets can be made stronger than permanent magnets). So, This new magnet would allow for ~doubling the total available strength of the Permanent Magnet Motor (or generator) because it wouldn't saturate until a much higher value. And, yes, that is very exciting! But, you probably still won't find them being produced in size much larger than 10 to 20 HP. (Although if the prices of the magnets are much less, you might)
The stronger magnets allow a higher field that allows the motor or generator to give or create power more efficiently. The relationship isn't linear either as the magnetic field is exponential, double the field strength will give a logarithmic increase in power up to the saturation point
@@thekaxmax He posted this video (to non-members/patreons) only 14 HOURS AGO, (ie: posted publically in 2024, albiet probably posted to members/patreons in 2023)
Exciting! I first heard about Niron a few couple ago, but figured they'd just be another vaporware. Great to hear they're actually making it to market.
That's amazing, I can't wait. I think the ability to magnetise them in situ is the real prize here. That's got to reduce manufacturing costs for motors and generators.
This is another one I actually have worked on first hand, we didn't manage to reliably make it. I did it by modifying zero valent iron nanoparticles. Very hard to hit the correct phase as we found out. Very cool you can do it with a ball mill, I should give that a crack at the lab
Was there a mistake in dates or is this a prerecorded video? Just curious as it is 2024, wondering if there are updates, great info thanks for your videos.
He mostly reads through the research papers and finds interesting stuff. You/we could do the same (if there is the time/energy). Google scholar is a good resource. Some research is behind a paywall, but some are free.
Thanks Robert now I have a new job for my rock tumbler iron power and ammonium nitrate tumbling for a few days I wonder if I could combine the other method a bit and tumble rust/iron oxide and ammonium nitrate. Robert what you think, do they compress the Niron powder with a soft metal powder as glue to make shapes use a resine or sintering?
Hopefully they actually release something this year. It sounds interesting, but I'd like to get my hands on some to compare directly with the N45 and N52 one inch cube magnets I'm currently using. Previously they showed comparatively low field strength, but possibly the gen 2 ones are at least closer.
Sweet! I look forward to seeing the new generation of perpetual motion machines! If the manufacturing gets cheap enough, we might even see a new generation of trains. They already run on iron tracks. Nothing like a new magnet to get the imagination working. Until I see a sample available, even if it is expensive, I tend to remain agnostic. So much sounds great and never appears.
Thanks so much for sharing, that was amazing. I hadn't heard of those but I've always felt like magnets are a major weak point and bottleneck when it comes to so many technologies. Love this channel!
we also breathe it ... there aren't many breathable gasses that don't react with oxygen; indeed nitrogen is only inert close to STP. Neon or helium are pretty much the only other options.
I wish you would do experiment build two identical generators one with strong magnets and one with weak magnets and see if there's a difference in the input torque versus output amps volts etcetera
This is one of the most interesting videos you've made! P.S. Is that an SDR in the background? I saw something like that in MLS, probably 10 years ago! G7DMQ
Great info! Well done professor! Has anyone calculated size V.S. strength of Neodymium N42, N45 and N52. Meaning, instead of buying the more expensive N52's, I could buy a larger size N42? Thanks for all you do! I appreciate you!!!
Depends On the force it could produce on opposite poles but neat de-ferrous plastics read about them still dont think it has the potential to compete with q With modern permament magnets yet
Oh magnetic polymer is on another level after looking it up but di-ferrous plastic is a little different where its polarity is developed almosted instantly when cure and it is resistant to shock demagnetizing it in comparsion to ferrous metals
Wow! The new magnets sound really incredibly promising! I do hope you'll be making some interesting experiments with them! Question for you Rob. If the core of the earth is supposed to be liquid iron surrounded by magma, how does the earth maintain it's magnetic field? Wouldn't it be far above the Curie point?
It's not like a static/permanent magnet, but more of an electro magnet. It's partly about the materials, but more about the fast spinning. Fun fact (or likely probability), the inner core rotates independently, and at a different speed/rate and tilt than the rest of the earth. Interestingly, back in the 1930's, Edgar Cayce said that in 1936, there was an upheaval deep within the earth, that led to a difference in the axial orientation of the inner earth core away from Polaris (and thus the rest of the earth), and that these major, but gradual changes deep within the earth, would eventually lead to an increased warming trend (and a more geologically active earth as to earthquakes, etc), starting at 1958, especially at the polar regions, becoming obvious/overt by 1998. Also changes in the magnetic field would result from these changes, with either a polar shift *or a start of a new cycle* in the shifting/changes in same, happening by 2000/20001 time frame. Indeed, it was right around the turn of the century that the change in both the speed of polar magnetic field wandering and field intensity, dramatically started to speed up for the wandering and the field intensity weakening. (Cayce died at the beginning of 1945). From 2000 to now, we've lost more magnetic field strength than we did in many decades prior. But who knows eh?
There's actually a different class of materials called electrets, which can be made to have a permanent electrostatic field (as opposed to magnets that can be made to have a permanent magnetic field.) Essentially, you take polar molecules (i.e., most organic molecules like plastics) which have an electric dipole moment, heat them, and then cool them in the presence of a strong electrostatic field, where they get frozen in alignment to the field. Afterwards, the material has a permanent electric polarization in the same direction. They're used to make a particular kind of microphone, among other applications.
@@steveswhirld No, gravity is a completely different kind of force than electromagnetism. Electromagnetism is the physical force that is carried by photons (they act like "couriers" carrying little packets of force from one particle to another, allowing them to push on each other.) Photons don't carry gravity, however, and the particle that does hasn't been identified yet by physicists. As far as we know, the only way for something to have an "opposite" effect on gravity would be for it to have negative mass, and we're not really sure if that's even physically possible, let alone how to create it. For electrets, they're useful pretty much any where you need a static electric field, like in xerox photocopiers (which use an electric field to propel little electrically-charged pigment particles onto a page for printing.)
This is still in the 'pilot production' phase with funding from big manufacturers. From the website they seem focused on big commercial use, not consumers.
Interesting, this is the third video this year that talks about an old invention that is rediscovered recently with much potential. Even the problem it could not be reproduced and was therefore forgotten is shared with another one - they had the problem that newer materials were too clean, they needed impurities to reproduce.
Some (most?) guitarists swear that they can hear the difference between ceramic and alnico magnets in their pickups. My ear for such things isn't great, I can't tell whether it's the fact that the B-field is stronger with the ceramics or the difference in materials, nobody's done it scientifically, comparing equally strong magnets of different materials, that I'm aware of. I have been very skeptical of people saying they can hear certain nuances that I can't, only to find out that if the pitch is lowered and the sounds isolated, I can hear it fine. So, it would be interesting to know.
Maybe, but a lot of people also claim they can hear differences between songs/music in MP3 or other lossy formats vs lossless formats, but when actually tested, they can't tell the difference in reality. We humans are amazingly subjective and unconscious beings. With that said, I don't rule out that some exceptional individuals, once in awhile, could potentially hear some differences (in both situations). After working with some blind students and experiencing first hand some interesting exceptions to the rule, I keep an open mind.
In Norway we produced 137,3 TWh of power from our water power system in 2023. If we were to produce new generators with the new magnets would we be able to produce 2,5 times as much energy from the same waterfalls?
No, the amount of energy available from a generator would not change, just the size and weight of the generator. It would still take the same amount of power to turn the armature. One benefit would be it would weigh less, making vehicles more efficient. Obviously the rare earth cartel won't be happy.
@@pixelpatter01 Isn't that assuming that the current generator system is completely matched/synched to convert all of the energy of the waterfalls on a 1 to 1 basis (meaning they are equal)? That is possible of course, but it is also possible that it is not and that there is more energy to be extracted. (I don't know, I'm just speaking hypothetically). If the generator system isn't fully matched, then one could build a more efficient generator system that could handle higher energy loads, and if that is the case, then yes, these magnets would help. Such public systems generally weigh cost vs efficiency vs the age old question, "is it good enough for the most part?". It the generator system has covered the needs for the area more or less well until now, then it is possible that there is room for improvement as population expands and energy consumption goes up. Generators are like an inverse process/operation of electric motors. Motors have a limit of energy they can handle before being overwhelmed, especially in terms of speed and/or intensity of cycles. It would make sense that generators also have a fixed limit as well.
Definitely a worthy experiment. In fact, I'm already thinking about what would happen if you went ahead and magnetized some powder, mixed it with epoxy to make a ferromagnetic fluid, and exposed _that_ to a magnetic field until it hardened.
What are you using the Peltiers for? DC voltage generation using heat differential? I showed my neighbour how this was possible just the other day? I made a hobo lamp (basically a lighter fluid powered candle) and a Pelletier. I will note and this was cooling Pelletier/Thermocouple not intended to generate electricity from heat as it's inefficient, but it still worked? It only products about 2volts though which is pretty dismal? But I explained to him that purchasing some that are used for heating rather than cooling, could effectively be used on the walls of a camping oven with either air cooled fins like a desktop computer CPU cooler or possibly passive liquid cooling similar to what is used on water cooled CPU coolers with enough convection of heat going over a water cooled radiator? And concept I was trying to demonstrate was the potential to have a portable camp oven that could also be used simultaneously be used to generate electricity to recharge your mobile phone or something like that?
That’s cool, the K-type probes are just for temperature sensing. I monitor the firebox temperature, chimney flue temperature and oven temperature on an old 1930’s wood cook stove in Home Assistant. I’m learning how to start a fire with the least smoke, and automate an alert to add another log for the most consistent heat for cooking.
The energy changes so the mass would increase. Very, very, very slightly. I see 87J/kg for NdFeB, so divide that by the speed of light squared and you get something pretty close to zero.
"Hey, Ferb, guess what we're buying today?" "A Rock Tumbler?" "Are you reading my mind?" "No, just watching the same video." By the way, the Curie point of a magnet is how Rice Cookers, and my covfefe pot both work. A Magnet holds the switch closed, and when it gets hot enough, loses its magnetism, and a spring, or gravity, then open the circuit. They are set for different temperatures, Rice shuts off at about 215F/101C, whereas my covfefe pot is probably about 180F/90C (Approx).
Close, it is actually the metal pot that demagnetizes temporarily, and once it cools down, it regains its magnetic properties. Often when magnets themselves reach their curie point, they lose it permanently. "And I'm spent..."
Now they need to figure out how to do it in zero gee, high powered magnets made from abundant materials will allow for fast development of resources in space
Mixing iron and ammonia in tumblers. I feel danger. Putting earth's abundant metal with abundant gas in earth's atmosphere! Now what if it's possible to spellbind some enhancement spells 😂
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Fun fact - I just learned that most cheap rice cookers use a magnet to "sense" when the rice is cooked. Basically when rice is cooked, the temp of bottom of the pan will go up fast, the magnet gets DE-magnetized at that temp (about 114C I think) and turns off the main heat.
Interesting. I would have thought a bimetal strip would be cheaper. But, I guess the demagnetization is more predictable.
oooh, a Curie temperature switch
@@misterhat5823 yeah, but it would need to be calibrated and can drift. the magnet will always "trigger" at the same temperature
so to remagnetize it there would be another permanent magnet under the low curie temp metal?
@@SandeepKumar-jj7zi demagnetization is not permanent at this temp threshold.
One of the neat things about ferrite magnet motors is that the motor stator magnet can be assembled into the motor frame before being magnetized. Takes a lot of work out of fighting with the magnetic attraction and repulsion during the assembly process. Once assembled, the assembled frame is dropped into an electromagnetic fixture, and then the field magnet material becomes actual magnets.
The stepper motors at work were recharged by putting a powerful HV pulse through the coils and are good for another 2000 hours of use. The magnet itself was made of AlNiCo
Question is, can we magnetize it in halbach array?
@@kigara3906
Not in situ.
so alnico can be magnetized in such a short duration@@christopherleubner6633
The history you gave of magnets in general was a real eye-opener for me. I felt a bit like my six year old cousin when she heard that in “the olden days”, people didn’t have phones!
I was told the same thing when I was a kid in the 70's.
Our kids could not or would not believe you plugged into the phone line for the internet
They just laughed and chuntered something about WiFi 😀
@@antrog1895 I met a teenager with a brass keyring that’s a model adding-machine, the kind with a roll of paper and the lever at the side. These were still being used in the office of an electrical goods store that I worked at in the 1980s. This lass thought it was a typewriter.
@@eh1702 not the same but i went Hong Kong in 1990’s and in a convenience store lady on check out using an abacus. Really freaked me out!
@@antrog1895 I was in the newly-independent Baltic countries in the early-mid 1990s, and since we seemed to have no language in common (later I realised most older adults where I was knew German). In Lithuania and Latvia, as I was a foreigner, the checkout ladies would whiz the abacus in a snap and then just point to it. A somewhat different abacus, to Hong Kong, I think - these were curved, and maybe set up a bit different. They were incredulous that I couldn't read it. I never did learn how. It was easier to just learn Lithuanian!
Fun fact: if you lay a rod of soft iron on the north south line and tap the south side, then you will magnetize it. If you turn the magnetized iron bar east and west and tap the west side repeatedly, then you will demagnetize the bar.
Separately, there is a paper over on my subs tack that talks about making more powerful magnets by changing the shape of their magnetic moment by spinning it in the magnetic field and/or spinning the magnetic field itself while magnetizing a material. It's just a hypothesis, I don't know if it would work or not. 😅
Dude, is basically the real Doctor Who
In his human form, remember the watch?
He could pull it off.
I propose we crowdfund the purchase of a telephone box to put in his workshop.
@@nickkitchener6155 I don't have money but I have an old D-Link voice over IP box that still works with pulse dialing so you could use an old-school rotary phone with modern phone services.
I had it set up as a bat phone for a bit.
I wonder what your dog looks like Robert 🤣🏌️♂️
@@nickkitchener6155 Once saw an episode of "American Pickers" (iirc) where they tried to buy one while they were in the country. Unfortunately it turns out they're unbelievably expensive due to decades of ubiquitous global interest in Dr Who. They tried to buy one from a guy who specializes in restoring them, he had several of them in various states of (dis)repair out back, they couldn't afford any.
Love the fact that you're still educating individuals, that seem to know. As always, keep up the great work.
Got your ball mill at the ready Rob, I know your going to have a crack at it. :)
William Sturgeon was the inventor of the DC motor and the first electro magnet. Fascinating and largely overlooked, Born dirt poor near Kendal and apprenticed to his father as a boot maker. Eventually he ended up in the army at which time he taught himself to read, write and speak half a dozen languages. His passion became scientific experimentation and invented the first practical electric dc motor, communator and electromagnet.. Sadly he was before his time and although producing working models to display he failed to generate financial backing for what was seen as curious though interesting. He died a pauper and is buried just outside Manchester.
Great news Bob... More diverse building of new energy applications and cheaper tech... bring it on😀
I remember having neodymium magnets all over our house in the early 80’s. My mother worked for a company fabricating geophones that were used in ground penetrating radar oil exploration. Any weekend she had to work I had to go to work with her. I learned to solder the components and my reward was always a handful of neodymium magnets.
I am very interested in seeing your demonstration of ball milling to make the Iron Nitride! Thanks for the video.
Re Strength of the magnet -- just to clarify, doubling the strength of the magnet also means that the input power to drive the generator will also double. So, for those that might misunderstand, you don't get double the generated power for free...
There are ways to reduce back EMF. The lower it is the higher the energy gain.
@@derekboyt3383Are you talking about motors with regard to Back EMF?
So generators would be smaller as they would use less copper, or even smaller number of smaller magnets to exhaust kinetic energy source.
Maybe less shafts, cogs, chains and belts as we would be able to place generators in places where they didn't fit. Less energy losses.
Still extremely exciting.
@@szogun1987 Well, typically Permanent Magnet Motors (and therefore generators that use permanent magnets), are rarely found in horse powers over 1 to 10. Once you get larger than that, they switch to field wound magnets which don't really use a permanent magnet like Neodymium. (It's because of the issue with Saturation that was explained in the video, field wound electromagnets can be made stronger than permanent magnets). So, This new magnet would allow for ~doubling the total available strength of the Permanent Magnet Motor (or generator) because it wouldn't saturate until a much higher value. And, yes, that is very exciting! But, you probably still won't find them being produced in size much larger than 10 to 20 HP. (Although if the prices of the magnets are much less, you might)
The stronger magnets allow a higher field that allows the motor or generator to give or create power more efficiently. The relationship isn't linear either as the magnetic field is exponential, double the field strength will give a logarithmic increase in power up to the saturation point
Rob, could you make one of these magnets in a video for us showing how we can do it at home? How cool would that be!!! Super exciting!!! ❤😁
I don't say it enough but this channel is endlessly fascinating. Thanks!
Brilliant. Thank you !
Since its 2024 I should be able to get these on Amazon now right? Any updates?
He posted it in 2024 and they are not yet purchasable. Did you go look?
@@thekaxmax He posted this video (to non-members/patreons) only 14 HOURS AGO, (ie: posted publically in 2024, albiet probably posted to members/patreons in 2023)
@@roidroid I'm supposed to know this as a non-patreon member? I'm not the one with time issues, check the OP.
@@thekaxmax oop i misread, or replied to wrong comment
Their website reads "Niron's Clean Earth Magnet technology *will* enable mass production of.."
So this is still in the hopes and dreams phase
Sir you are asset to humanity! Thank you for taking the time to make your videos.
Exciting! I first heard about Niron a few couple ago, but figured they'd just be another vaporware. Great to hear they're actually making it to market.
I hope its not like graphene batteries, solid state batteries, perovskite solar cells, etc, etc, and the ultimate tease--fusion.
Ah, wasn't aware of magentic properties of iron nitride. Tnx have some fun looking further into this
Have a great evening/night.
Fascinating and very exciting!
That's amazing, I can't wait. I think the ability to magnetise them in situ is the real prize here. That's got to reduce manufacturing costs for motors and generators.
This is another one I actually have worked on first hand, we didn't manage to reliably make it. I did it by modifying zero valent iron nanoparticles. Very hard to hit the correct phase as we found out.
Very cool you can do it with a ball mill, I should give that a crack at the lab
let us know how that goes. its an interesting method to say the least.
I look forward to more videos from you about these magnets when they are actually available.
cheers mate
what a great video! i don't even have much interest in this, but you kept me glued to the screen with your storytelling!
Great stuff ! Thank you so much
Was there a mistake in dates or is this a prerecorded video? Just curious as it is 2024, wondering if there are updates, great info thanks for your videos.
It's only two months into 2024. Makes perfectly good sense to be best of 2023 to me.
This guy is constantly doing research for us
He mostly reads through the research papers and finds interesting stuff. You/we could do the same (if there is the time/energy). Google scholar is a good resource. Some research is behind a paywall, but some are free.
Thanks for bringing my attention to this!!!! I can't await the results.
Very cool Rob.
BTW, you need a new coffee mug 😂
lol
Thanks so much for sharing
Yes thank you I enjoyed your lecture.
Thanks , this was a great presentation of welcome news. 🤝
Looks REALLY PROMISING!!!
Looks like a great use for a rusted Mondeo and a bag of fertilizer lol.
Thanks Robert! I love these videos.
lol - cheers mate
Australia’s PMG used Alnico magnets in the hand generators of Sylvester Switch boards and several other switch boards as a ringer.
That might work good for electric cars too, anything to reduce weight on those things will help. Also drone motors, light weight motors.
Thanks Robert now I have a new job for my rock tumbler iron power and ammonium nitrate tumbling for a few days I wonder if I could combine the other method a bit and tumble rust/iron oxide and ammonium nitrate. Robert what you think, do they compress the Niron powder with a soft metal powder as glue to make shapes use a resine or sintering?
I thought I had seen this video before.
thanks, very cool info
Brilliant, unfortunately it won't mean a reduction in cost to the consumer, it will translate into higher profits for the producer of the end product.
Thank you Sir
Thanks, fascinating.
Very interesting, I would be interested in you getting a hold of a sample to show the differences between types of magnets.
Wow that was a whole lot of information to take in, in a very short amount of time.
I can't wait for the video that you show us how to do it mate!
Will be great for sailboat power and regen!
I thought for certain you were going to talk about the 2022 patent on producing tetrataenite. 😂
Good to know we've got multiple options.
Hopefully they actually release something this year. It sounds interesting, but I'd like to get my hands on some to compare directly with the N45 and N52 one inch cube magnets I'm currently using. Previously they showed comparatively low field strength, but possibly the gen 2 ones are at least closer.
OMG I had to go back to listen again did I hear you say Dollars lol😅 Love your channel
looking forward to a video where you make a DIY generator from Niron magnets!
Now that's progress.
I’m in the middle of rock hounding country. There has to be a good sized ball mill for sale around here cheap. Go big or go home 😁
Sweet! I look forward to seeing the new generation of perpetual motion machines! If the manufacturing gets cheap enough, we might even see a new generation of trains. They already run on iron tracks. Nothing like a new magnet to get the imagination working. Until I see a sample available, even if it is expensive, I tend to remain agnostic. So much sounds great and never appears.
Thanks so much for sharing, that was amazing. I hadn't heard of those but I've always felt like magnets are a major weak point and bottleneck when it comes to so many technologies. Love this channel!
"We don't know what to do with [atmospheric Nitrogen]" - tbf we do like to make a bit of fertiliser 😅 Thanks for the great video.
we also breathe it ... there aren't many breathable gasses that don't react with oxygen; indeed nitrogen is only inert close to STP. Neon or helium are pretty much the only other options.
I wish you would do experiment build two identical generators one with strong magnets and one with weak magnets and see if there's a difference in the input torque versus output amps volts etcetera
This is one of the most interesting videos you've made!
P.S. Is that an SDR in the background? I saw something like that in MLS, probably 10 years ago! G7DMQ
Robert, you got to make a video make some of these yourself, the audience will love it, me included
Arguably this development is right up there with the introduction of transistors and LEDs.
Great info! Well done professor! Has anyone calculated size V.S. strength of Neodymium N42, N45 and N52. Meaning, instead of buying the more expensive N52's, I could buy a larger size N42?
Thanks for all you do! I appreciate you!!!
Had a firm visit an inventor group I used to go to who had a plastic that could be moulded & when it cooled down it became magnetic
Has he been murdered?
Magnetic polymers have been known for some time, even birds have magnetic bio-polymers in their brain to help navigation/migration.
Depends On the force it could produce on opposite poles but neat de-ferrous plastics read about them still dont think it has the potential to compete with q
With modern permament magnets yet
Oh magnetic polymer is on another level after looking it up but di-ferrous plastic is a little different where its polarity is developed almosted instantly when cure and it is resistant to shock demagnetizing it in comparsion to ferrous metals
@@UnifiedInfo - so sorry that my pearl was of no interest to you so you were quite right to trample on it.
Wow! The new magnets sound really incredibly promising! I do hope you'll be making some interesting experiments with them!
Question for you Rob. If the core of the earth is supposed to be liquid iron surrounded by magma, how does the earth maintain it's magnetic field? Wouldn't it be far above the Curie point?
It's not like a static/permanent magnet, but more of an electro magnet. It's partly about the materials, but more about the fast spinning. Fun fact (or likely probability), the inner core rotates independently, and at a different speed/rate and tilt than the rest of the earth.
Interestingly, back in the 1930's, Edgar Cayce said that in 1936, there was an upheaval deep within the earth, that led to a difference in the axial orientation of the inner earth core away from Polaris (and thus the rest of the earth), and that these major, but gradual changes deep within the earth, would eventually lead to an increased warming trend (and a more geologically active earth as to earthquakes, etc), starting at 1958, especially at the polar regions, becoming obvious/overt by 1998. Also changes in the magnetic field would result from these changes, with either a polar shift *or a start of a new cycle* in the shifting/changes in same, happening by 2000/20001 time frame. Indeed, it was right around the turn of the century that the change in both the speed of polar magnetic field wandering and field intensity, dramatically started to speed up for the wandering and the field intensity weakening.
(Cayce died at the beginning of 1945).
From 2000 to now, we've lost more magnetic field strength than we did in many decades prior.
But who knows eh?
When you add motion to anything, you get all sorts of amazing physical properties. One of the great mysteries of the universe.
I think this is bigger that the development of solid state batteries.
Bledsings From. Aberystyth ❤
I've always wanted to see what would happen if you heated iron in the presence of a static electric field, like a Lord Kelvin's thunder storm.
try it
There's actually a different class of materials called electrets, which can be made to have a permanent electrostatic field (as opposed to magnets that can be made to have a permanent magnetic field.) Essentially, you take polar molecules (i.e., most organic molecules like plastics) which have an electric dipole moment, heat them, and then cool them in the presence of a strong electrostatic field, where they get frozen in alignment to the field. Afterwards, the material has a permanent electric polarization in the same direction. They're used to make a particular kind of microphone, among other applications.
@@DistortedSemance applications ? anti gravity floatational and possibly flying devices ?
@@steveswhirld No, gravity is a completely different kind of force than electromagnetism. Electromagnetism is the physical force that is carried by photons (they act like "couriers" carrying little packets of force from one particle to another, allowing them to push on each other.) Photons don't carry gravity, however, and the particle that does hasn't been identified yet by physicists. As far as we know, the only way for something to have an "opposite" effect on gravity would be for it to have negative mass, and we're not really sure if that's even physically possible, let alone how to create it.
For electrets, they're useful pretty much any where you need a static electric field, like in xerox photocopiers (which use an electric field to propel little electrically-charged pigment particles onto a page for printing.)
@@DistortedSemanceThere's also the case of the permanent electric fields at the interface of P-N junctions.
Thanks for sharing this Robert!
Hi Robert. How about making a video about magnetic shielding?
I hope you can do a video of how to DIY make a piece of Fe Nitride and how to in-situ magnetize it
The ammonia gas method is pretty much the same as for gas nitriding in heat treatment, except that's done on a solid lump of metal to case harden it.
This is still in the 'pilot production' phase with funding from big manufacturers. From the website they seem focused on big commercial use, not consumers.
Hi thair it's always good to listen to you I love it thanks .
my favorite type of magnets are "poly magnets"!
Is that where two parrots are attracted to each other?
I cant wait!!!!
Interesting, this is the third video this year that talks about an old invention that is rediscovered recently with much potential. Even the problem it could not be reproduced and was therefore forgotten is shared with another one - they had the problem that newer materials were too clean, they needed impurities to reproduce.
Some (most?) guitarists swear that they can hear the difference between ceramic and alnico magnets in their pickups. My ear for such things isn't great, I can't tell whether it's the fact that the B-field is stronger with the ceramics or the difference in materials, nobody's done it scientifically, comparing equally strong magnets of different materials, that I'm aware of. I have been very skeptical of people saying they can hear certain nuances that I can't, only to find out that if the pitch is lowered and the sounds isolated, I can hear it fine. So, it would be interesting to know.
Maybe, but a lot of people also claim they can hear differences between songs/music in MP3 or other lossy formats vs lossless formats, but when actually tested, they can't tell the difference in reality. We humans are amazingly subjective and unconscious beings. With that said, I don't rule out that some exceptional individuals, once in awhile, could potentially hear some differences (in both situations). After working with some blind students and experiencing first hand some interesting exceptions to the rule, I keep an open mind.
How do you magnetise them in situ? Wouldn't they need wrapping inside a coil?
wow!!
In Norway we produced 137,3 TWh of power from our water power system in 2023. If we were to produce new generators with the new magnets would we be able to produce 2,5 times as much energy from the same waterfalls?
No, the amount of energy available from a generator would not change, just the size and weight of the generator. It would still take the same amount of power to turn the armature. One benefit would be it would weigh less, making vehicles more efficient. Obviously the rare earth cartel won't be happy.
no
@@pixelpatter01 Isn't that assuming that the current generator system is completely matched/synched to convert all of the energy of the waterfalls on a 1 to 1 basis (meaning they are equal)? That is possible of course, but it is also possible that it is not and that there is more energy to be extracted. (I don't know, I'm just speaking hypothetically).
If the generator system isn't fully matched, then one could build a more efficient generator system that could handle higher energy loads, and if that is the case, then yes, these magnets would help. Such public systems generally weigh cost vs efficiency vs the age old question, "is it good enough for the most part?". It the generator system has covered the needs for the area more or less well until now, then it is possible that there is room for improvement as population expands and energy consumption goes up.
Generators are like an inverse process/operation of electric motors. Motors have a limit of energy they can handle before being overwhelmed, especially in terms of speed and/or intensity of cycles. It would make sense that generators also have a fixed limit as well.
Can it be mixed with epoxy to make any shape
Definitely a worthy experiment. In fact, I'm already thinking about what would happen if you went ahead and magnetized some powder, mixed it with epoxy to make a ferromagnetic fluid, and exposed _that_ to a magnetic field until it hardened.
Not sure if you're into plants but you should do a video about Ethylene gas and its affect on seeds & seedlings!!!
steel when hot has to be pointing north when put in water it points north so a sword would be crooked if not north
I just bought alnico magnets to hold K-type thermocouples on a wood stove, after learning neodymium magnets demagnetize at 80°C.
What are you using the Peltiers for? DC voltage generation using heat differential?
I showed my neighbour how this was possible just the other day? I made a hobo lamp (basically a lighter fluid powered candle) and a Pelletier. I will note and this was cooling Pelletier/Thermocouple not intended to generate electricity from heat as it's inefficient, but it still worked? It only products about 2volts though which is pretty dismal?
But I explained to him that purchasing some that are used for heating rather than cooling, could effectively be used on the walls of a camping oven with either air cooled fins like a desktop computer CPU cooler or possibly passive liquid cooling similar to what is used on water cooled CPU coolers with enough convection of heat going over a water cooled radiator?
And concept I was trying to demonstrate was the potential to have a portable camp oven that could also be used simultaneously be used to generate electricity to recharge your mobile phone or something like that?
That’s cool, the K-type probes are just for temperature sensing. I monitor the firebox temperature, chimney flue temperature and oven temperature on an old 1930’s wood cook stove in Home Assistant.
I’m learning how to start a fire with the least smoke, and automate an alert to add another log for the most consistent heat for cooking.
I wonder how long it’s gonna be until we see some niron magnets available for consumer purchase.
Silly question does it change weight when it’s magnetised?
The energy changes so the mass would increase. Very, very, very slightly. I see 87J/kg for NdFeB, so divide that by the speed of light squared and you get something pretty close to zero.
I would guess not enough to notice. But it's not a silly question.
Even if the mass does not change measurably, it might change dimensions measurably, which would mean that the density could also change.
There is also an iron nickel alloy with a crystal allotrope that is also very strong magnet
So if this could take the form of a paste, you could theoretically 3d print motors/generators?
Do you have a rough cost of them?
😊👍
"Hey, Ferb, guess what we're buying today?"
"A Rock Tumbler?"
"Are you reading my mind?"
"No, just watching the same video."
By the way, the Curie point of a magnet is how Rice Cookers, and my covfefe pot both work. A Magnet holds the switch closed, and when it gets hot enough, loses its magnetism, and a spring, or gravity, then open the circuit.
They are set for different temperatures, Rice shuts off at about 215F/101C, whereas my covfefe pot is probably about 180F/90C (Approx).
My covfefe pot doesn't do that. I feel like I need an upgrade.
@@simongross3122 Some use electronics.
Close, it is actually the metal pot that demagnetizes temporarily, and once it cools down, it regains its magnetic properties. Often when magnets themselves reach their curie point, they lose it permanently. "And I'm spent..."
@@justinw1765 Learn something new every day. Magnetics was always my weak spot.
Nice! Lets make some! Translation': will you make some?. Lol
lol - i can give it a go!
@@ThinkingandTinkering Nice!
Mind blowing helpfulness intelligence max
Clean Earth Magnet = CEM = 333
With the Ma' 'G' N3T.
Numerology will do nothing but lead you in circles until the day that you realize that your one and only life under the sun has been hopeless wasted.
have you heard about "CMR Polymagnets"?
Oh uh ... This looks like my next project
The electro magnetic bourke engine with iron nitride magnets
I'm just imagining 800hp yasa motors....
Good idea! Robert, we'd like you to apply for the part of Doctor Who 😁
lol - i would love that tbh
Now they need to figure out how to do it in zero gee, high powered magnets made from abundant materials will allow for fast development of resources in space
👍
Hotrodding future
Mixing iron and ammonia in tumblers. I feel danger.
Putting earth's abundant metal with abundant gas in earth's atmosphere!
Now what if it's possible to spellbind some enhancement spells 😂
So when are you getting hold of some NiRon magnets??