Yep - rounded, not too strongly attracted objects can make that nice rattling sound. It is also utilized in 'rattlesnake eggs'. A magnetic toy designed to make that sound when thrown together in the air. Thanks for watching!
This sound is truly peculiar and not just for the individual - there is even a souvenir called "Buzzing Magnets". I have had this souvenir for a long time and occasionally enjoy listening to this sound - the speaker probably does not convey exactly the same sound as the magnets actually do. These magnets are demonstrated here: th-cam.com/video/L55Lki8qqSc/w-d-xo.html
7:30 The supplier wrote that "Other substances are added to the beads for moisture-resistance". That sounds crazy. I cannot imagine how glass would not be moisture-resistant. Perhaps it means that if those other substances were missing, the glass would become a little dull and less shiny after contact with water or moisture. Thank you, this is great work and very well presented.
ceramic engeneering is ,,,super complicated. glass is a really complex structure, it has 2 regions. a silica rich area..and a flux rich area. and you can fit all kinds of elements into it in a zillion different ways. ie..all the new metals in cars are actually glass now. they are super cooled liquids ..memory metals. same formulas..different production methods.
This was a very nice video, I’m always happy when you break out the Uranium glass. I’m also happy to see that, each video, it seems like you gain more and more patrons. Your work has taught me a lot, and I’m sure has educated many others. I just wanted to give you a heartfelt thank you, Brian. Keep up the wonderful work!
It is amazing to me, that it doesn't cost more than it does. Cool to collect and will never be made again. I guess they produced tons and tons of it back then - keeping the prices low. Or maybe people don't like having radioactive things in their home anymore :o)
@kvykimo indelis It is if course less safe than non-radioactive glassware. But it honestly isn't that radioactive. In my opinion it is one of the safest ways to collect radioactive items. I personally don't eat or drink from it, because I have a non-radioactive kitchen. I follow the ALARP principle :)
Everything is magnetic, if you have a magnetar close by. But I don't recommend trying that at home. Go to a friend's house instead. Aight I need uranium glass now
I wonder if suspending nano particles of metal in glass (or another medium that holds its rigidity), would increase (or decrease) a given magnetic effect vs that of the pure metal constituent. I posit that the surprising magnetic effects you are seeing with metals in glass are due to this effect. It would be interesting to test this theory or (find papers that have already experimented with these properties).
Thanks for the quality vid before I lay down for bed, Brainiac! You truly are the highlight of my weekend! Also, thank you for the bloopers at the end. Love your stuff!
Well, I have been publishing a video every month for almost two years in a row now. As long as people have interest in my videos, I will keep making them. Thanks for watching and commenting!
@ Paul Trigg I doubt it. The styrofoam is sitting on water, and water is good at discharging static electricity. Try making anything static electric in moist air or in contact with water ;) Thanks for watching!
Gadolinium has something like seven unpaired electrons in its F-shell. That's why it's used as a contrast agent in MRI imaging. There's a difference between bulk magnetic properties and 'microscopic' magnetic properties.
Hehe, I'm not saying nice in a sarcastic way. Try turning on English subtitles. I'm actually saying no in Danish (Nej). It was quite a work to get all those tests done. Challenging, even for my patience... Thanks for watching!
I used to have a number of uranated glass marbles; it was always a kick in the pants when I irradiated them with visible, NUV, or UVA radiation and watched them fluoresce! :-)
I'd be curious to see if the gadolinium bead results would vary depending on temperature. Test it at multiple temperature points, say -20°C, 0°C, +20°C and +100°C.
@@Enjoymentboy Well even if the test lasts only 10s, that's plenty of time for the bead to cool down quite a few degrees if it was at 100°C and the air was at ~30. You'd have to use some kind of device that maintains its temperature throughout the experiment, or design another experiment altogether.
Tungsten (literally heavy stone) is the original name of the ore, not the metal. Calling the metal tungsten is a bit like insisting all iron should be called magnetite.
I'm not so sure about that iron glass sample. In pig iron smelting, the casting sand turns emerald green from the iron contamination. Iron is also the reason Alsatian wine glasses have green stems. I believe your sample must be some other metal or an iron oxide rather than elemental iron. After seeing the tests, I believe it is Iron II oxide.
Iron show up in very different colors in glasses. In phosphate glass and also borate glass it always looks brown. Depends on the oxidation state. I lime glass it is green as you say.
You should really make a Gouy balance to solve these problems. You have the capabilities and resources and it would be a great addon to your precision devices.
need to rig up a force meter with thread/string a solid distance outside the magnetic field. You could suspend the beads, zero the scale, and slide magnet under. Would remove the boat and drag entirely.
You could test the effects of weight with iron fillings. The material would be homogeneous enough for your purpose and the weight of each test would be easy to control.
It's a LEGO flag. Being a Dane, I have quite a collection of LEGO from my youth (Danish company). Why not use it as an adult too x) Thanks for watching!
I seem to remember a video of a frog being affected by a magnetic field. Which would lead me to believe that anything can be affected. Then again maybe it was just the iron in it's body.
It maybe possible the magnetic property is in the process of producing the glass bead, not just the metal properties in the beads. All these metals are produced, and the way they are produced can have an effect on behavior.
Thanks! It did take a lot of patience to make this video. Both for the tests and the editing. HitFilm's timecode function is not made for this kind of use....
A video on magnetic flux permittivity would be interesting, maybe even magnetic saturation, for example I've heard super permittive metals can have a low saturation point and act diamagnetic. They can also be used in magnetic shielding.
Why this experiment was done by on not pure samples - all are mixes of diamagnetic glass with metals para, ferro and diamagnetic. For me it would be more important of measuring their magnetic force per weight of pure sample. That time we would get some information which metals have the strongest and weakest properties in respect to interaction with magnetic field.
Physically speaking, it is anomalous that the heavier beads displace faster than the lighter beads; given that the weight of the beads directly influences the height at which the boat submerges into the water, thus serving as a factor in the direct proportionality of surface area and the drag that boat should experience, theoretically. This was not witnessed in practice. From a physical chemical perspective, what we witnessed in the video is what likely should occur because of the intermolecular forces involved amongst the polar compounds that take part in the experiment; Not just the bead and the magnet, but also water are polar. Water is the medium that was used in measuring displacement versus time. The countless attraction-repulsion interactions between each individual water molecule, whilst keeping in mind that as the bead on board the styrofoam boat displaces across water there are also momentary interactions between water molecule poles and the magnetic bead which essentially compensates for the resistance that should theoretically be experienced. Almost like when you visualize the energy and time it would take for one person going up the stairs versus the time and energy it would take for a larger person riding up the escalator.
I believe that water drag isn't that significant in this experiment since the velocities involved are way smaller than the terminal velocity this boat should have with the beads. Maybe it's just the concentration of each metal in the bead that causes the ferromagnetic ones to be less attracted than the paramagnetic.
#Braniac75 someday you should test the magnet proprties if different noble gases such as hydrogen ice cube, oxygen, nitrogen, helium balloon, neon, argon, xenon, and krypton bulbs! I love your channel!
What would happen if you spinned the giant neodymium magnet on a coil? With such a strong magnetic field im expecting a high enough voltage to power some stuff
Thankyou.. Can you do a video the electricity and magnets, Magnetic games is the only one who has done a brief video on it, I would love to see a dreamcatcher made of lightning..
Hi. I like the video very much. And I have to state that I do not use Gadolinium in any other glasses than in the Gd glass itself and the Cerium glass.
I wonder if some kind of "pendulum meter" could be constructed to measure the force per unit glass. The period of a normal pendulum is independent of the mass of the bead, and therefore can be used to measure the force of gravity. You would need a uniform magnetic field and a fixed distance from the "pivot point" to the center of action of the force in the beads.
i have been blowing glass 28 years. i also make custom hard glasses. if theres something you need ask me. comment here and ill give you some contact info. i make a really nice terbium oxide borosilicate that glows green almost the same as uranium, and a bunch of other uv colors. also some cfl colors using holmium oxide. the uv stuff is for use with plasma sculpture..since argon /merc gas mix makes quite a bit of uv as well as some visible white light.
Funny, The thought emporium recently showed that you can cover glass with metal using Thermal evaporation so if it have even slight coat of any metal it could be magnetic... Another way to make glass or even plastic magnetic. 😅
The weight effect maybe a area effect. The more frontal area you have of the material in question, the more total flux lines are going through the material (total Weber’s passing through the control surface). This should alone amplify any repulsion or attraction affect. en.wikipedia.org/wiki/Weber_(unit) en.wikipedia.org/wiki/Gauss%27s_law_for_magnetism Thanks for the fascinating videos!
Uranium glass is good stuff. Gonna need to get my hands on some of that. I suspect ebay searches for it could potentially lead to an increase in prices. I did like the fact that some glass beads were repelled and some attracted (the cerium and gadolinium were great) but this could be down to polar orientation of the bead and if it was flipped over, it would do the opposite of it's previous reaction but it's and interesting effect making me wonder about the material alone, never mind the glass. Great video and keep up the good work.
Isn't ferromagnetism caused by the atoms arranging themselves into a crystalline form? If so, the fact that they are trapped in a glass probably explains why they don't perform nearly as well as would be expected.
I guess it highly depends on the concentration of metal in the glass. Some metals maybe have a stronger color (like iron, copper) and therefore need lower concentrations in glass.
If you want to simplify comparisons between samples with different mass I would suggest a torsion-free string with a sample holder and counterweights made from inert materials (plastic?) Alexander von Humboldt used that apparatus to study Earth's magnetic field.
Thanks for the suggestion. I like the extreme sensitivity of the water bath test, but I guess a setup with leverage and counterweights could be equally or even more sensitive.
Glass can even be a laser! I use Nd doped glass to test spectrometer and pump laser performance from time to time. My favorite is the praseodymium(Pr) doped glass.
Was there any information given about the % concentrations of the doping metals in the glass? After watching the first two tests I can’t help but think the unexpected top performers may be due to a higher metal concentration than the rest. Perhaps this could explain their more pronounced response to the applied magnetic fields. If all the beads were made by the same company, one would think they should be pretty much right on point for % concentration. However without that info it definitely is a confounding factor in the initial tests (haven’t yet finished the video). Edit: You showed a few labels, but only the holmium and erbium beads had a molar % listed (5%). I didn’t see anything on the other two.
As mentioned late in the video, I did not get much info from the seller (which is also the manufacturer) about the exact content. I do suspect, that the gadolinium bead has a higher concentration. But again, this is not meant as a test of the elements magnetic properties. It is a test of the glass beads with their different metal dopants. Thanks for watching!
I have a suggestion for some new videos and they are related to light and lasers. Do you think you could look in to Vantablack, it this new substance that creates the darkest black yet know. It be interesting to see what differencing types of laser wave length will react with it. You could tested the difference between the lasers by look at the heat generated with a infrared camera on front and the normal method on the back of the object cover in Vantablack. You could also use a prism’s defragmentation of a powerful light source to see if are any wave that might be might still be seen on Vantablack. It’s just a thought. Thanks for all of your interest videos. Oh I just thought of something else, the Vantablack might be effective by a very strong magnet... carbon nanotubes I really don’t know much about them in general
Vantablack is very interesting, but also expensive and hard to get as far as I know. Since it is so good at absorbing light (and very fragile?), I think lasers quickly could heat it to destruction. But it would awesome to experiment with if possible. I honestly have no idea how it would react to a laser :) Thanks for watching!
I did not realize it was so expensive, that’s incredible depressing, they done things for artists in the past, if we could get them to see your channel ; I bet they would do something if they saw that you are both an artist as well as doing educational experiments. No harm in asking...
Put some printer toner under a microscope and you will find some pieces of strongly magnetic glass (a surface effect). They even rotate in 3 axis, corresponding to a weak old magnet held at 10-20 cm distance.
I find it unlikely, that the styrofoam can have a static charge when sitting on water. Even moist air is effective at discharging static electricity. Thanks for watching :)
I dont think the styrofoam was repelled by the magnet, the water itself is slightly diamagnetic which could make the styrofoam move away slightly due to the water movement underneath it
This may sound shallow, but I want a 6'+ x 3'+ magnetic glass table for tabletop games/D&D. I imagine that'd be very expensive. :( I wonder if the glass is kept under a magnetic field while it is cooling.
I like the sound when gadolinium glass was bouncing off the magnet.
Yep - rounded, not too strongly attracted objects can make that nice rattling sound. It is also utilized in 'rattlesnake eggs'. A magnetic toy designed to make that sound when thrown together in the air. Thanks for watching!
Yes, I agree. That sound has a very ASMR like quality to it. :)
3b1b vibes
This sound is truly peculiar and not just for the individual - there is even a souvenir called "Buzzing Magnets".
I have had this souvenir for a long time and occasionally enjoy listening to this sound - the speaker probably does not convey exactly the same sound as the magnets actually do.
These magnets are demonstrated here: th-cam.com/video/L55Lki8qqSc/w-d-xo.html
Love your informative videos, thank you
I thank you for this. I love that you include experimental data and discussion of boat drag with correction for weight of the beads.
@3:26 I just love that sound of the gadolinium glass bead bouncing off the magnet.
Who on earth can down vote this delightful scientific presentation!
Somebody expecting DC Comics content?
only four people. And I those are just jealous bastards
How about testing a solution of a gadolinium salt in water?
Then precipitating pure gadolinium silicate and melting that into a glass bead?
7:30 The supplier wrote that "Other substances are added to the beads for moisture-resistance". That sounds crazy. I cannot imagine how glass would not be moisture-resistant. Perhaps it means that if those other substances were missing, the glass would become a little dull and less shiny after contact with water or moisture. Thank you, this is great work and very well presented.
Thank you for sharing this. It is something that we simply take for granted.
Super interesting as always! Who would've guessed that so much go into a single glass bead?
ceramic engeneering is ,,,super complicated. glass is a really complex structure, it has 2 regions. a silica rich area..and a flux rich area. and you can fit all kinds of elements into it in a zillion different ways. ie..all the new metals in cars are actually glass now. they are super cooled liquids ..memory metals. same formulas..different production methods.
@@autopartsmonkey7992 wow, i never knew that! Glass is so fricking cool!
The little checkered flag was a very nice touch by the way:)🇬🇷☮️
I just woke up and, strangely, I was asking myself if glass can be magnetic. I absolutely love this.
This was a very nice video, I’m always happy when you break out the Uranium glass. I’m also happy to see that, each video, it seems like you gain more and more patrons. Your work has taught me a lot, and I’m sure has educated many others. I just wanted to give you a heartfelt thank you, Brian. Keep up the wonderful work!
uranium glass is the coolest thing ever
It is amazing to me, that it doesn't cost more than it does. Cool to collect and will never be made again. I guess they produced tons and tons of it back then - keeping the prices low. Or maybe people don't like having radioactive things in their home anymore :o)
@@brainiac75 how dangerous is uranium glass? im guessing it would be a good idea not to eat food out of plates made out of this material.
@kvykimo indelis It is if course less safe than non-radioactive glassware. But it honestly isn't that radioactive. In my opinion it is one of the safest ways to collect radioactive items. I personally don't eat or drink from it, because I have a non-radioactive kitchen. I follow the ALARP principle :)
@@brainiac75 I have a few box's of u glass
I was gonna say it does look really cool despite being a little radioactive lol
Everything is magnetic, if you have a magnetar close by. But I don't recommend trying that at home. Go to a friend's house instead.
Aight I need uranium glass now
I like the glowing in the uv lights glass
This guy sounds like a guy that would commentate Planet Earth
for real xD
I could totally see his voice fitting perfectly in Adventure Time. Correction, 'hear' his voice.
Nice. I would love to commentate anything BBC Nature (Natural History?) makes. Their production quality is through the roof! Thanks for watching!
@@brainiac75 hi, where did you found those glass bead ?
@@crazynfc2667 6:46 ? ...just a guess
Amazing as always. Love uranium glass. Sometimes it's cobalt blue in color.
I wonder if suspending nano particles of metal in glass (or another medium that holds its rigidity), would increase (or decrease) a given magnetic effect vs that of the pure metal constituent.
I posit that the surprising magnetic effects you are seeing with metals in glass are due to this effect.
It would be interesting to test this theory or (find papers that have already experimented with these properties).
i love the music during the boat races...made it so engaging lol
More than a THOUSAND 👍
And only three👎
What a ratio!
I will not click like because I don't dislike what you do. I will click like because I love what you do.
That's even better, thanks :D
I learnt more here than in a day at school
He is the replacement for all the physics teachers :p
I learned more on this channel than four years of high school
Please do not learn anything while at school (daycare), you will regret it later as an adult.
@@agvulpine bruh what do u mean?
@@jeonneonnyan6074 the first thing you are taught in college or on the job is how to unlearn everything you learned in school.
Thanks for the quality vid before I lay down for bed, Brainiac! You truly are the highlight of my weekend!
Also, thank you for the bloopers at the end. Love your stuff!
I just want to say that All of your videos are very entertaining and very informative, You do a great job Keep up the great work.
Your content is always exceptionally intriguing! Oh and your video editing skills are fantastic too!
Damn you're own a roll with the video output!
Well, I have been publishing a video every month for almost two years in a row now. As long as people have interest in my videos, I will keep making them. Thanks for watching and commenting!
Very clever setup with the pneumatic actuator
Besides being an interesting demonstration, I really liked your choice of music with the video. Good one! :oD
these would be a interesting lab at a science class in a school.
I really like seeing the 3 Electrical conductor metals, Copper, Silver and Gold being so strongly diamagnetic.
Gemstones also paramagnetic or diamagnetic response, and some jump to magnet like ferro:) Thank you for magnetic series very much!
this channel is so fucking sick! how is it not popular af!?!?
I definitely want to get some Uranium glass. Great video. Shout out from rural Maine, USA.
I wonder if the styrofoam was repelled by static electricity rather than it's magnetic properties.
2:19
@@DirtyLew42 Maybe electrical than magnetic.... that is the part I am referring to.
Paul Trigg it wouldn’t effect the test tho
@ Paul Trigg I doubt it. The styrofoam is sitting on water, and water is good at discharging static electricity. Try making anything static electric in moist air or in contact with water ;) Thanks for watching!
I would wager to suggest that static electricity and magnetic properties are one and the same thing.
Nice LEGO contraptions for testing!
Awe struck, again. Thanks Brainiac75!
love the color of the Holmium bead
Gadolinium has something like seven unpaired electrons in its F-shell. That's why it's used as a contrast agent in MRI imaging. There's a difference between bulk magnetic properties and 'microscopic' magnetic properties.
Loved the " Niiiiice " at the end. I would have cussed. I am trying to change, really... : ) Very interesting video !
Hehe, I'm not saying nice in a sarcastic way. Try turning on English subtitles. I'm actually saying no in Danish (Nej). It was quite a work to get all those tests done. Challenging, even for my patience... Thanks for watching!
I used to have a number of uranated glass marbles; it was always a kick in the pants when I irradiated them with visible, NUV, or UVA radiation and watched them fluoresce! :-)
I'd be curious to see if the gadolinium bead results would vary depending on temperature. Test it at multiple temperature points, say -20°C, 0°C, +20°C and +100°C.
How would you keep its temperature at those levels while performing the experiment, though?
Excellent question. I would assume you would just have to be VERY fast but I may be wrong. I'm just the idea guy. :)
@@Enjoymentboy Well even if the test lasts only 10s, that's plenty of time for the bead to cool down quite a few degrees if it was at 100°C and the air was at ~30.
You'd have to use some kind of device that maintains its temperature throughout the experiment, or design another experiment altogether.
@@ZeroZ30o for -20 he cud use something like liquid nitrogen like substances which drop to only -20 C
@@ZeroZ30o maybe airtight setup filled with hot air?
So excited when ur videos come out think because there like 1 or 2 a month it makes me want to watch them more
I appreciate how you refer to tungsten as Wolfram, it's a much more fitting name
Tungsten (literally heavy stone) is the original name of the ore, not the metal.
Calling the metal tungsten is a bit like insisting all iron should be called magnetite.
@@0LoneTech knew someone who was more into minerals would find my comment eventually if it needed to be cleared up, and thanks for doing it
I also collect uranum/ vaseline glass. Looks awesome under black uv light
I'm not so sure about that iron glass sample. In pig iron smelting, the casting sand turns emerald green from the iron contamination. Iron is also the reason Alsatian wine glasses have green stems. I believe your sample must be some other metal or an iron oxide rather than elemental iron.
After seeing the tests, I believe it is Iron II oxide.
Iron show up in very different colors in glasses. In phosphate glass and also borate glass it always looks brown. Depends on the oxidation state. I lime glass it is green as you say.
You should really make a Gouy balance to solve these problems. You have the capabilities and resources and it would be a great addon to your precision devices.
Love the Lego checkered flag and use of Lego.
need to rig up a force meter with thread/string a solid distance outside the magnetic field. You could suspend the beads, zero the scale, and slide magnet under. Would remove the boat and drag entirely.
You could test the effects of weight with iron fillings. The material would be homogeneous enough for your purpose and the weight of each test would be easy to control.
Why am I just now learning about magnetic glass 🤔
I still love your little black & white finish flag!!
It's a LEGO flag. Being a Dane, I have quite a collection of LEGO from my youth (Danish company). Why not use it as an adult too x) Thanks for watching!
I seem to remember a video of a frog being affected by a magnetic field. Which would lead me to believe that anything can be affected. Then again maybe it was just the iron in it's body.
I never thought that glass doped with a paramagnetic element could be more attracted to a magnet than iron doped glass...
It maybe possible the magnetic property is in the process of producing the glass bead, not just the metal properties in the beads. All these metals are produced, and the way they are produced can have an effect on behavior.
I love magnet videos! I will make spanish subtitles 🐱
Thank you very much. That would be awesome!
Some steady hands you got xd 9:57
Fun stuff! That took a lot of work. Thank you.
Thanks! It did take a lot of patience to make this video. Both for the tests and the editing. HitFilm's timecode function is not made for this kind of use....
A video on magnetic flux permittivity would be interesting, maybe even magnetic saturation, for example I've heard super permittive metals can have a low saturation point and act diamagnetic. They can also be used in magnetic shielding.
Why this experiment was done by on not pure samples - all are mixes of diamagnetic glass with metals para, ferro and diamagnetic. For me it would be more important of measuring their magnetic force per weight of pure sample. That time we would get some information which metals have the strongest and weakest properties in respect to interaction with magnetic field.
I'm jealous of your collection of glowing glasses
3:26 - interesting sound
What a great video. Just amazing.
10:08 hmm, yes, the floor here is made of floor
Physically speaking, it is anomalous that the heavier beads displace faster than the lighter beads; given that the weight of the beads directly influences the height at which the boat submerges into the water, thus serving as a factor in the direct proportionality of surface area and the drag that boat should experience, theoretically.
This was not witnessed in practice.
From a physical chemical perspective, what we witnessed in the video is what likely should occur because of the intermolecular forces involved amongst the polar compounds that take part in the experiment; Not just the bead and the magnet, but also water are polar. Water is the medium that was used in measuring displacement versus time. The countless attraction-repulsion interactions between each individual water molecule, whilst keeping in mind that as the bead on board the styrofoam boat displaces across water there are also momentary interactions between water molecule poles and the magnetic bead which essentially compensates for the resistance that should theoretically be experienced.
Almost like when you visualize the energy and time it would take for one person going up the stairs versus the time and energy it would take for a larger person riding up the escalator.
Man, do i like these magnet videos.. 👍
I really enjoyed this video, thank you.
I always thought The Simpsons were exaggerating the green glow, but maybe Springfield nuclear uses UV lights at their plant lol.
I believe that water drag isn't that significant in this experiment since the velocities involved are way smaller than the terminal velocity this boat should have with the beads.
Maybe it's just the concentration of each metal in the bead that causes the ferromagnetic ones to be less attracted than the paramagnetic.
#Braniac75 someday you should test the magnet proprties if different noble gases such as hydrogen ice cube, oxygen, nitrogen, helium balloon, neon, argon, xenon, and krypton bulbs! I love your channel!
What would happen if you spinned the giant neodymium magnet on a coil? With such a strong magnetic field im expecting a high enough voltage to power some stuff
1:06
Brainiac: Now the uranium ions fluorescents with a deep green color.
Me: uh- hate to break the glass but that's bright green
Thankyou.. Can you do a video the electricity and magnets,
Magnetic games is the only one who has done a brief video on it,
I would love to see a dreamcatcher made of lightning..
Hi. I like the video very much. And I have to state that I do not use Gadolinium in any other glasses than in the Gd glass itself and the Cerium glass.
I wonder if some kind of "pendulum meter" could be constructed to measure the force per unit glass. The period of a normal pendulum is independent of the mass of the bead, and therefore can be used to measure the force of gravity. You would need a uniform magnetic field and a fixed distance from the "pivot point" to the center of action of the force in the beads.
Or just keep a magnet at a fixed point above the sample, and see how much its weight is changed on a sensitive scale.
i have been blowing glass 28 years. i also make custom hard glasses. if theres something you need ask me. comment here and ill give you some contact info. i make a really nice terbium oxide borosilicate that glows green almost the same as uranium, and a bunch of other uv colors. also some cfl colors using holmium oxide. the uv stuff is for use with plasma sculpture..since argon /merc gas mix makes quite a bit of uv as well as some visible white light.
Does the metal being held in place by particles of glass create magnetism in the same way as neodymium does with iron in neodymium magnets?
for the races you should do multiple runs to measure standard error
Funny, The thought emporium recently showed that you can cover glass with metal using Thermal evaporation so if it have even slight coat of any metal it could be magnetic... Another way to make glass or even plastic magnetic. 😅
Magnetic aerogel? Would the evaporation or sputtering get far inside the structure?
The weight effect maybe a area effect. The more frontal area you have of the material in question, the more total flux lines are going through the material (total Weber’s passing through the control surface). This should alone amplify any repulsion or attraction affect.
en.wikipedia.org/wiki/Weber_(unit)
en.wikipedia.org/wiki/Gauss%27s_law_for_magnetism
Thanks for the fascinating videos!
Uranium glass is good stuff. Gonna need to get my hands on some of that. I suspect ebay searches for it could potentially lead to an increase in prices.
I did like the fact that some glass beads were repelled and some attracted (the cerium and gadolinium were great) but this could be down to polar orientation of the bead and if it was flipped over, it would do the opposite of it's previous reaction but it's and interesting effect making me wonder about the material alone, never mind the glass.
Great video and keep up the good work.
Everything reacts to the movement of a magnetic field, some so minute it requires specialized equip to detect.
Maybe do the same test but see what glass beads repells the fastest
Isn't ferromagnetism caused by the atoms arranging themselves into a crystalline form? If so, the fact that they are trapped in a glass probably explains why they don't perform nearly as well as would be expected.
YEAY! ANOTHER VIDEO! 😁
I was expecting the Gd bead to go flying onto the magnet and shatter in the "race" test.
Depends on how much iron is in the glass :3 or magnetic materials :D
Melted hematite will do it easy.. looks just like glass. or add hematite to power b4 melting
That would definitely react to a magnet. But it wouldn't be clear/see-through?
I guess it highly depends on the concentration of metal in the glass. Some metals maybe have a stronger color (like iron, copper) and therefore need lower concentrations in glass.
If you want to simplify comparisons between samples with different mass I would suggest a torsion-free string with a sample holder and counterweights made from inert materials (plastic?) Alexander von Humboldt used that apparatus to study Earth's magnetic field.
Thanks for the suggestion. I like the extreme sensitivity of the water bath test, but I guess a setup with leverage and counterweights could be equally or even more sensitive.
I think these glass beads are so cool.
Glass can even be a laser! I use Nd doped glass to test spectrometer and pump laser performance from time to time. My favorite is the praseodymium(Pr) doped glass.
Was there any information given about the % concentrations of the doping metals in the glass? After watching the first two tests I can’t help but think the unexpected top performers may be due to a higher metal concentration than the rest. Perhaps this could explain their more pronounced response to the applied magnetic fields.
If all the beads were made by the same company, one would think they should be pretty much right on point for % concentration. However without that info it definitely is a confounding factor in the initial tests (haven’t yet finished the video).
Edit:
You showed a few labels, but only the holmium and erbium beads had a molar % listed (5%). I didn’t see anything on the other two.
As mentioned late in the video, I did not get much info from the seller (which is also the manufacturer) about the exact content. I do suspect, that the gadolinium bead has a higher concentration. But again, this is not meant as a test of the elements magnetic properties. It is a test of the glass beads with their different metal dopants. Thanks for watching!
I have a suggestion for some new videos and they are related to light and lasers. Do you think you could look in to Vantablack, it this new substance that creates the darkest black yet know. It be interesting to see what differencing types of laser wave length will react with it. You could tested the difference between the lasers by look at the heat generated with a infrared camera on front and the normal method on the back of the object cover in Vantablack. You could also use a prism’s defragmentation of a powerful light source to see if are any wave that might be might still be seen on Vantablack. It’s just a thought. Thanks for all of your interest videos. Oh I just thought of something else, the Vantablack might be effective by a very strong magnet... carbon nanotubes I really don’t know much about them in general
Vantablack is very interesting, but also expensive and hard to get as far as I know. Since it is so good at absorbing light (and very fragile?), I think lasers quickly could heat it to destruction. But it would awesome to experiment with if possible. I honestly have no idea how it would react to a laser :) Thanks for watching!
I did not realize it was so expensive, that’s incredible depressing, they done things for artists in the past, if we could get them to see your channel ; I bet they would do something if they saw that you are both an artist as well as doing educational experiments. No harm in asking...
Pure Glass/Silicon will not attract magnetic fields but it will repell them. Glass with metals in it will attract magnetic fields .
Can you test if they react to light any differently while in a magnetic field?
Put some printer toner under a microscope and you will find some pieces of strongly magnetic glass (a surface effect). They even rotate in 3 axis, corresponding to a weak old magnet held at 10-20 cm distance.
U should try using something other than styrofoam because it's quite possible that it's moving from static electricity rather than magnetism.
I find it unlikely, that the styrofoam can have a static charge when sitting on water. Even moist air is effective at discharging static electricity. Thanks for watching :)
The checkered Lego flag...nice touch.
D.M.
I dont think the styrofoam was repelled by the magnet, the water itself is slightly diamagnetic which could make the styrofoam move away slightly due to the water movement underneath it
This may sound shallow, but I want a 6'+ x 3'+ magnetic glass table for tabletop games/D&D. I imagine that'd be very expensive. :( I wonder if the glass is kept under a magnetic field while it is cooling.
Very interesting..I bet your in your lab for several hours testing this stuff.