Measure Magnet Grade with Kitchen Scale? | Density = Grade?
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- Опубликовано: 10 сен 2024
- The grade of a magnet is an important attribute. It determines strength and price, but can you test it yourself at home using something as simple as a scale? Is there a correlation between the density of a magnet and its grade? Is it even easy to measure the density of a magnet? Let's find out!
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#DensityMagnet #GradeMagnet #Brainiac75
The scales were like "Err. What just happened?"
I got a "Err. Dafuq is that shit?" feeling from it instead lol
It can't be good for the scale.
There is something about his voice that is just so attention grabbing yet soothing it cannot be replicated
Smooth authority. Sunglasses are necessary.
I agree!
Another channel I like, but no longer uploads, is VetClinicGambia. It's videos by a German veterinarian in The Gambia, and his voice and tone and (as Peter S said) smooth authority are very interesting. Warning: Some of it is gross!
This is a playlist about a dog that got run over by a car. Yes, it has a happy ending.
ruclips.net/p/PLDh4soVr3B0dhQzmlEpvDHtd97MzPOQTe
right! agree with you.
It's fun hearing him say hemoglobin.
"The Germans, apparently!" My Austrian father loved that.
Yep, the Germans know how to do things properly :) Of course they need a kitchen scale weighing with one gram precision up to 15 kg. Say hi to your father from me and thanks for watching!
As a German I have to say we definitely need those scales! Imagine cooking a huge pot of Grünkohl (kale) and not being able to calculate the exact amount of salt that needs to be added.
@@brainiac75 Greetings from Germany! We love our precision instruments! :-)
@@Seegalgalguntijak Deutsche Qualität! 😏
"Ok, so what are your hobbies?"
"Magnets."
Used to be a hobby - more like a profession now ;) Thanks for watching!
Magnets. Always with the magnets.
(not complaining I just have to make the simpsons reference)
And Lasers!
And lasers. And radioactivity... Well the usual stuff you know....
Dragnet theme plays shortly after.
0:45 that's why you always wear thick protective gloves
5:26 He must have been exposed to too much radiation in a previous episode and grew a 3rd arm.
we germans need a way to meassure all the dough we are getting
I am not at all surprised, it was a German company that designed a scale with those specifications. Germans do things properly - not in a sloppy manner ;)
I just got my first magnet off of Ebay yesterday, 0.5x1x2in bar magnet, advertised as N52 and with a chip and a scratch. I think I got a good price, it was $20 for an impressive magnet like this, it said 4.5kiloGauss. You inspired me to get it, its been fun seeing things that are magnetic, like the dollar bill. I learned many things today.
@Brainiac75 your videos make me smile!!
i love how educational these videos are!
Glad you like 'em, PerfectPilot! We all need a smile once in a while - especially at these rather difficult times right now. Much more to come!
Yeah, Yay!
I never thought about this problem, great video.
Your videos make me feel so refreshed. There's no bullshit or self-promotion. Just pure information. I love it. Thank you so much man. Thank you.
Brainiac75 ,if the issue or error is related with Magnetizations, then first demagnetize it ( a sample pice ) by heating ,then measure the weight. It will give you more accurate value of weight without any error or using spacer
why not use a balance made of non-magnetic material? you know the classic woman holding two plate hanging from a stick with chains.
I should have read your comment before posting mine!
@@Cautionary_Tale_Harris i also thought about adding a aluminum sheet between the scale and the magnet to block the magnetic field. maybe with a little Styrofoam spacers.
@@Francois_Dupont alu won't block the magnetic field. It blocks electromagnetic radiation above a certain frequency but has no effect on a static magnetic field. Try it at home if you have a magnet.
@@raykent3211 sadly i have some magnet, but no alu sheet. hahaha. i always thought it would block a magnetic field. i would have a magnet on one side and it coudnt affect visibly another magnet on the other side. it was 20years ago so i dont remember exactly the setup.
maybe it weaken the field so much?
Thank you, with your subtitles i can learn English faster!
You're welcome :) With my Danish accent muddying some pronunciations, I always put English subtitles on. Especially useful for the more uncommon words I sometimes need to use. Thanks for watching!
@@brainiac75 also good for hearing aid
When I saw the N45, N48, and N52 near each other in the same frame, I nearly died! Until I worked out it was a screen effect. Phew!!
I guess you've taught me well! Plus, I've had my own "experiences" with slightly smaller magnets of similar grade.....
Use displacement of water to measure density.
water displacement will only tell you volume. Mass has to be found other ways
A floating object displaces its weight in water. A submerged does indeed displace its volume in water. You could use a boat of some kind, of which the weight is known, but it is probably adding more variables and so more error in the answer.
Yep, this is how to do it. Straight in the water to get the volume, floating in a boat to get weight. And with the right setup you can get extreme precision at any weight.
Takie zagadnienia porusza ten człowiek że "kopara opada" ciężko uwierzyć , mnie fascynuje magnetyzm i dużo się uczę z tych odcinków
3:00 I think you should be fine with smaller spacer as well, as the magnet effects will cancel out, it will 'try' to move the top plate to the magnet, but once the magnet is not in your hands but sitting on the spacer, it will push the plate back where it would be.
EDIT: though maybe not if the magnet pulls on the things below the movable plate...
Great Video:) Regarding the effekt of earths magnetic field on the weight of the magnet: I think it is to be expectet, that the earths magnetic field should not in any way affect the weight on the scale, because the field (at such small lenghts) is completely homogeneous. A Force can only be seen in an inhomogeneous magnetic field (e.g. close to the pole of a magnet), where there is a non-zero gradient of the potential Energei of the magnet in the field. This is the reason, why the neadle of a compass will only be allignet with the magnet feld of the earth, but not pulled towards on of the poles.
Uh, my first thought was "use a balance beam made of wood and measure the counterweight".
old classical way
Yes there was some playful mystification here based on the measuring device being affected by the magnetic field. Nice entertainment, but otherwise dumb. Just weigh it with a classic balance containing no ferromagnetic material.
@@raykent3211 The problem, as shown with previous videos, at the magnet strengths he has, even non-ferromagnetic materials are still subject to generating paramagnetic fields in them. I recall one video using the magnets to push some things away, in little boats, because the item in question (he tested a bunch) were generating a repulsion field instead of an attraction field.
So he's down to making a set of scales out of wood or rope or something, and that's actually a lot harder than you'd think. :-(
@@llearch use a keeper to contain the magnetic field enough for its influence further afield to be négligeable? By keeper I just mean a ferromagnetic enclosure. Like the classic soft iron bar between the poles of a horseshoe magnet, when it's in place the magnetic field is short circuited and the assembly hardly even attracts iron filings.
@@raykent3211 I'm not sure the big magnets wouldn't stick to such a thing, if not be strong enough to permanently magnetise it. Certainly I wouldn't want my fingers anywhere near it. >.< Worth a thought, tho.
You need an analog scale made of wood hahaha
Just a thought, if you elevate the weighing scales to a fixed position and suspend an iron bar via rectangular frame positioned on the scales such that there's room to place your magnet under test below, you could then zero the weight of the frame and bar and observe the pull on the bar from the magnet placed below it.
Just a quick comment on weighing yourself on a scale - setting it on a soft surface, such as carpet, will yeild incorrect and unstable results; an electronic scale works by measuring the compression of a spring (technically a set of load cells) but the soft ground itself acts like a spring, compressing underneath the scale's feet and resulting in not all of the mass's weight being transferred to your scale.
If you have a room with a tile floor or cement somewhere you can get much more accurate results, though the precision will still be the same. Hope that helps, the more you know! :)
That intro... Is a VERY Good demonstration of why these monster magnets are freaking dangerous. A finger under there would've been a goner. Demonstrate with a fake sausage next time! IT MUST SQUIIIRT! Also include a ketchup packet inside it.
Hehe, imagine the clean up I would have to face with a ketchup packet x) Will make for a great recording in slow motion though. And yes, these magnets are not a joke. It is so deceiving that you get the magnet closer and closer without anything happening. And then suddenly, WHAM, everything happens faster than you can react - like the Ketchup Effect...
@@brainiac75 Very much so. They're so unintuitively dangerous. If you forget you're dealing with monster magnet. When I saw the video of "weigh a magnet" Im like OH NO HALF OF THAT STUFF INSIDE IS METAL, WATCH OUT! xD
Are there any fishing type scales that are accurate enough, could keep the magnet in a bag (on the end of a bit of rope if needed for extra distance).
Or like at the grocery store.
the 1 dislike is the magnet who was fat shamed
Hi there! I'm your new fan! Perfect content! 10/10!
Hi Denis! Glad you like my videos. Much more to come on magnets, lasers etc.
I just subscribed today, too!
You could use semi digital lever balance. Make seesaw with a counterweight on one side and scale under it. Then you can put the magnet on the other side and see by how much the weight decreased. And you can adjust the leverage to get multiple times the precision of your scale
Best thing to start my friday
Awesome.. new brainiac.. love this channel
Awesome I love your experiments. I love science and I love your channel 💗
*Brainiac uploads*
Magnets are important.
Most bathroom scales cheat: if the measurement is within 0.5-1 kg of the previous measurement, they will show the previous value. I suspect this is to make them seem more accurate than they really are.
It is easy to test: you just need a few different weights (water bottles and other cooking ingredients?), and you have to get on the scale with different weights until the reading changes - then you can deduce the hysteresis of your scale.
Measuring strength could likely be done by having a known distance between the top of the magnet and a metal plate above. (I would put a layer of dense foam on the metal plate for some crash and finger safety.) With sufficient distance from the scale itself, then we should be able to see the magnets pull up some of their weight off from the scale.
But that also seems like a crude way to measure magnetic strength.
I think measuring the strength of a magnet would require measuring its pull force against gravity. I bet you can think of a setup with a scale that can get this done. The weight of the magnet should not be factored in (especially since you don't know which parts inside the scale are magnetic and therefore whether these magnetic parts somehow influence the mechanical measurement of the scale itself).
Are you going to do the video about a class 3b invisible laser?
5:18, Wow, didn't know you had 3 hands!!!
What a nice scale!!!!
Would the scale show the strength if you placed the magnets on a small platform with supports on the table and not the plate?
You could also use physics to measure the weight of a magnet indirectly. Namely, by placing it in a container floating in water, which is in a bigger container filled till the edge and capture the overflowing water when placing the magnet. Afterwards you could weigh this water with any kitchen scale, without having to worry about the magnetic fields.
Yep, but I feel like it would be impossible in practice to measure in that way with gram precision. Water will stick to surfaces, evaporate etc. And neodymium magnets are not waterproof - rust so easily ;) Thanks for watching!
North Pole is only in the -20C range right now. That's not bad considering that's about the same temperature we have here in the middle of Alberta, Canada, having went down to -40C a few weeks ago for over a week.
I don't really work at -20C - not enough insulating fat xD The coldest I have experienced this winter was -14C.
I remember being in a cool store chilled to -39C at a large slaughterhouse some years ago. Not pleasant! Though they were nice enough to turn of the cooling system so there was no draft... I don't like freezing, though it is easier to dress for than warm weather.
damn what if brainiac became a magnet master
And a new vid finnaly
1:44 I have noticed with my bath scale, not sure if every works like that, but if I alter my weight by less than 0.5 kg, it rounds the measurement to the last value (I guess to look consistent)? It is funny, because if I add 2kg and remove 1.9 kg, it shows my original weight +0.1 kg but if I simply add 0.2 kg, it just shows the previous value.
Btw, I think it is best to get the old balance scales, they work surprisingly well (though, if you want to be really precise, you should use them in vacuum chamber or use weights with similar density to the measured object:p
Could you use a scale where the magnet is suspended below and pull the magnet until it releases from a plate attached to the scale with strong rope to indicate weight and pull force of magnet
5:22 was terrifying before I realized it was a video edit.
i like this!!!
measure repulsion at fixed distance. Or attraction to known material at fixed distance. Measure several distances and use and equation.
I think an old fashioned balanced scale would work for this. You could probably make one easily out of non-ferrous materials.
I would suspect its the position of the tube on the scales pressure pad and not having the centre of the magnet lined up exactly centrally on the top of the tube each time, thats causing the discrepancies?
When you weighted the magnet with the big spacer on the 15kg scale, the magnet was still moving (swinging), ut the scale was showing a stable weight... that makes me wonder if the scale has some logic to show an stable reading, even thou the sensor is jumping all around. At that length, the sensor experiences quite a few grams of force. This might have the effect that if you weight something more than once, you get different reading depending on how you place it on the scale, and how much it is moving.
Never thought about it!!!
You could mesure the weight of a spinning flywheel magnet and mesure the weight effected by nearby coppercoils and how much
Kw you get?
Would you see a difference in drop time through a copper/aluminium pipe?
Can you suggest a website for buying magnets in the US?
5:18 - JEZUZ that looked scary! Don't even show magnets so close to each other xD
Maybe needs a vertical bar between each section, so it's obvious that it's not the same shot, psychologically, you think?
@@llearch Agree :)
Hi , i have a disk neodymium magnet
40mm x 20mm. Do you think it is dangerous for me?(im 14 years old)
Hi Mikea. No, if you keep it away from other magnets and large ferromagnetic objects it is not dangerous for you. It is a strong magnet though - be aware ;)
@@brainiac75 ok, thanks for replying!!!
Hello could you do a video on magnetism as a whole ? and why/how different elements interact differently with magnetic fields, I'm know there's an ocean of stuff about it here on youtube, but I'd want to watch a video from you as I always seem to learn new stuff about things I thought I knew all about when I watch your videos. also I'm on your wall since 2016 ! :p
Hi Gary. The comment frames from the 100k celebration are still on my wall, yes ;) Making a video on explaining how magnetism works in layman terms is my 'holy grail' video. I haven't given up on it, but it is nearly impossible since it is a quantum mechanical effect, that has no real analogy in our macroworld. It just can't be easily explained... But I may make an attempt at it to explain the different magnetic reactions between ferromagnets, paramagnets, diamagnets etc. Thanks for watching through the years!
Hej Dine videoer er de bedste og jeg syndes du skulle være mere populær :)
2:59 Have you thought of placing the magnet on-edge on the tube?
I guess you could use old timey scales made out of non magnetic materials and lead weights on the other side
Why don’t you like hang it in like in the one’s from the grocery store?
It should work, but a lot of work for a 13 kg magnet. But done carefully, it may be a way of spotting tiny weight differences during pole switching. Thanks for watching!
Great video👍
I am somewhat concerned about your measurement of a magnet's volume. Are they really ideal cylinders? I would probably try to measure via displacement of water.
This question ia not related to the video but i find powerful laser cool but also like to have eyes so where do you buy your laser safety goggles and are goggles from survival lasers reliable becouse these laser goggles are alot cheaper than others
Please answer
You should put an affiliate link in the description for that kitchen scale, because I ordered one already.
Haha, they have no idea I exists. I do like the specs and looks of the Caso L15. The slight flickering of the display seen in the video is not visible at all in real life. My only complaint is: I'm not a fan of its touch 'buttons'. I prefer a tactile feedback when pressing a button. Nice scale though, really useful. Thanks for watching!
With every magnet video you do, that ICP guy is smiling
Analog spring scale could possibly work better, like for grocery store fruit and such, and weighing the magnet inside of a faraday cage made of steel plating would decrease the effects of the earth’s magnetic field too
I've been thinking about that video where your showcased a micro SD card that claimed to be magnet proof. Would ionizing radiation cause bits to be messed up on the card? I think that could make for an interesting video. Anyways, great video as always.
you could get a dynamometer, like a hanging scale, tie a string to it, like 5 metres long, and put a wood basket at the end of the string, and now you can keep the magnet very far away from the scale
Can't the coating be a factor too? I mean as far as I know the shiny outside isn't neodymium itself... So there might be some variations based on manufacturing process (of coating alloy and its application to the surface). That also should be a part of calculation for density....
Wondering if a spherical magnet is any easier to measure the mass/strength of since all its surface points are equally remote from the center
Easier to weigh without needing a pole switch? Spherical magnets tend to destroy their poles if stuck to something. If not, they will orient in line with the Earth's magnetic field. Not sure, if they will be any easier, to measure but good suggestion for further experimentation :) Thanks for watching!
5:37 You told us not to show the 30 measurements, Brian~ 🙃
(The emoji, since transparency _is_ important imo)
Can you try to hang them from something and measure it like that
I think it's safe to say that you're the Styropyro of magnets.
yep
Thought you would've tared out a piece of wood before using your little scale. What you can do for more accurate weighing is water displacement in a plastic storage container. Also, you have wide feet.
Maybe you can try hobby grade load cell with a lever and calibrate that with known mass before use
Why not construct a wooden balance with an alumin[i]um pivot and use copper weights?
The reason for higher grade magnet have higher density? I guess may be higher grade magnet crystal structure is more close to ideal crystal structure.
Solid video 🤙
Thanks, Joe :)
I'm glad you don't have ferrous parts in your pelvic region.
Could you make a very accurate scale with a long unequal length seesaw? Put the magnet on the short side and move a known weight up and down the long side until it balances perfectly. Then measure the distance. Idk if this would be better than your scales or not.
It should work, but I do wonder if it can be done precisely enough to get gram precision? I think a low-friction balance scale with sand on one pan and the magnet on the other pan would be easier. Balance it and weigh the sand afterwards. Would take some time though... Thanks for watching!
also why not put a aluminum plate between your magnets and the scale to protect it from the interference?
You didn’t mention how you measured the volume? Just measure the dimensions with a ruler and assume a perfect cylinder? There may be some error there too!
can't you just used water to measure the density? just an a idea
I guess you could weigh it using a spring and hook type scale where you hang a platform off of a spring and then put the object to be weighed n the platform and depending on how far the spring stretches, you get your weight. So long a the tray and everything within distance of the magnet was plastic.
A tip for everyone who has difficulty remembering the calculation method for calculating the cylinder volume;
PIZZA!
Yes, PIZZA, PI x Z x Z x A (instead of Pi x R² x Height) ^^
That was new to me. Guess it works. A for 'Altitude' ;) Thanks for watching!
Where did you get those slippers? Look quality.
Got them from my mom for Christmas, so bought in Denmark. Second Christmas present in this video! They are really nice - all I know about them is their brand: Rohde (size 44).They are not rated as safety slippers though ;)
Couldn't you make a wooden fulcrum balance scale on a large scale and then use gram weights to get a more precise measurement?
There is also the option of the scales you hang objects from that use springs internally, while not as precise, could avoid interference by creating enough distance between the scale and the magnet.
Just two other measure methods that could be used.
Heh I was just thinking about this the other day when I got one of my magnets too close to my milligram scale and worried I mighta screwed it up by magnetizing any iron in it, like the springs.
I have this question for quite a while now
Are you a scientist?
And what do you do for living if not?
Just some fan question your videos are very interesting for a science student like me
Hi Sachin. I have an older video from 2017, where I tell more about myself. No, I'm not a scientist. Try guessing what I do in my part time day job besides RUclips and watch the answer here: ruclips.net/video/qQaGXEYnrkg/видео.html You probably won't believe it x)
feel like you are in greenland lul 4:24
You could use a hanging/wall mounted scale and hang the magnets 2m away from the mechanic.
LOL, there's no need to weight yourself 3 times in a row, because the electronic scales are lying for fast consecutive weightings. It will always show the first number. Unless there is a significant difference in weight or a very long wait between consecutive measurements, the scale will keep displaying the same number.
That's a design trick for consumer grade scales, so it won't show each time a slightly different weight when a person weight oneself many times in a row.
:o)
have you thought of making+testing your own (electro)magnets?
Yes, I have thought about making videos about electromagnets. Being able to turn a magnet off is very convenient... And I have a feeling, that an AC magnet made of say an old microwave transformer, would be fun to test on electronics >:) Thanks for watching!
use Archimedes principle by using water to calculate weight
Neat
You are first
Gaussian meters ??load carrying capacity ???and density and values of magnitude of magnificent management
When i clicked on the video I thought the title was "the STRUGGLES of welding magnets"
How precise are those old balance-type scales made of brass?
if they are carefully made they are very precise. i have a LEE precision scale used to measure gun powder and its precise to .0032gram (supposedly)
leeprecision.com/safety-powder-scale.html
@@Francois_Dupont What do you use that for?
@@Cautionary_Tale_Harris weighting gun powder... i reload my own casings. store bought they are about 1-3$ each depending on the caliber. when you make them yourself its 20cent each.
@@Francois_Dupont I'm teasing you---I handload, too.
@@Francois_Dupont
I made this comment 12 minutes ago on another video:
@CharlesColfax I've considered buying range ammo. And those reloads they're selling at least have brass that I can keep. If I don't have to buy brass, it costs me about $0.19 per cartridge for 9mm. That's using 'cheaper' but not trash components.
(I did the math last weekend and now can't find my notebook so that cost might not be exactly right...)
If I typically fire 100 rounds of 9mm each trip to the range, it costs $19 to use my ammo and $40 to use theirs. And that's not counting my time.