#diamagnetic

[sciencesolutions]

[mpcomagnetics]

Sustainable Recycling of Rare-Earth Elements from NdFeB Magnet Swarf

Sustainable Recycling of Rare-Earth Elements from NdFeB Magnet Swarf: Techno-Economic and Environmental Perspectives Rare-earth elements (REEs) are increasingly susceptible to supply risks due to their limited geographical availability and growing demand in clean energy applications such as neodymium-iron-boron (NdFeB) magnets used in electric vehicles and wind turbines. When NdFeB magnets are…

[rahiwatching]

Given that the Chute system was essentially a tube of liquid Protodermis held up by a magnetic field, this means that liquid Protodermis is affected by magnetism.

I think this means that not only can a Toa of Magnetism pretend to be a Toa of Iron by manipulating metal with their element, they could probably also somewhat convincingly imitate a Toa of Water too.

[nalgenes]

anyone wanna take the ACS gen chem exam for me on tuesday

[your-god-empress-lavender]

Even more materials science updates:

First (not materials science), i've been far too quiet about the genocide in Gaza. Not that my platform is very big at all or that my shouting with the crowd will make a big difference, but for all that is still human about me, i can't say nothing about the atrocities happening right now. I recommend that anyone who reads this also reads about the genocide presently occurring. I am far from the best source, but i can recommend Al-Jazeera as one of the best official news sources for the goings on in Gaza. There are also countless Gaza residents who are posting their own experiences and lives on practically any social media site if you want a first-hand account of the genocide.

Second (materials science), the 2 weeks or whatever since i last posted, i've done a lot of research with solid-state synthesis and it is working so well. I've achieved so much better results (the particles are so much more diamagnetic that they can be moved around or thrown around through a much thicker plastic sheet (the added thickness helps extra to prove that the effect isn't just from the warping and flexing of the very weak plastic lids i was using to test the material before) and are strongly enough repelled from a magnet that i have a hard time putting them directly on it). The synthesis is far easier as well as i just have to mix all the chemicals in to a bottle 1/3 full with saturated sodium bicarbonate solution, then leave it to sit for like a day, filter off all the sodium rich water, rinse it with water a few more times, then cook it real hot. Just about every run i've done so far has demonstrated far better results than the last which has really lifted up my spirits. The magnesium has helped a lot. Using majority calcium (5Ca, 1Mg), shows improved results over just Ca, using majority magnesium (5Mg, 1Ca), shows even better results, but unfortunately using all magnesium isn't noticeably better than majority magnesium. I tried doping it with a tiny bit of chromium (yay for stealing 5 grains of potassium chromium sulphate from lab) which appeared to help somewhat, then i tried doping with a tiny bit of boric acid which appeared to help even more which was interesting. Unfortunately, due to work and being very sick for the last week, i have only gotten 1-2 trials done with each new formulation and most certainly am not making the batches consistently. I've noticed that some runs dehydrate and turn from blue to dark brown much faster than others, though it's not exactly clear why. It may be due to the calcination process seeing as batches with higher calcium tend to turn far slower and never have i seen it turn more than just a slightly less bright shade of green (calcium carbonate has the highest calcination temperature of anything else in the mix so it would make sense to me). In some of the runs, i terminated the heating process early simply due to time constraints, something i regret doing. The best batches also tend to be the ones that were the darkest, so i have no doubt that the simple act of heating it more/less dramatically changes the results. Given the fact that every single sample i've made with the solid-state/precipitate synthesis has shown far greater stability (i've yet to notice even the slightest decrease in strength from the first batch, made around 2 weeks ago), i may just try heating the lighter samples again to see if it improves their qualities. All in all, i've been very excited to see how this turned out. Given all that we've learned, i'm fairly surprised it worked at all in the liquid stage and i'm betting that the only reason it did was because of some oxygen displacing some of the chlorine, making it (in some tiny amount), into the oxides. I can further say that the material shows no magnetic properties before being heated which as far as i'm concerned is very strong evidence that the material needs the oxides in order to work (or at the very least, carbonates and hydroxides don't let it do whatever the fuck lets it be so diamagnetic). Some runs have been conducted without washing the precipitate first (usually unintentionally), and while they usually do work somewhat, the results are (far) less spectacular, so inclusion of a large quantity of sodium appears to interfere with its working.

Also, i got 500 grams of copper sulphate pentahydrate. That's 2 moles of soluble copper for less than the price of 100 grams of copper chloride (only like 0.75 moles soluble copper). Not that the only consideration is the copper, the sulphate may be significant in that it may react with calcium or otherwise mess with the reactions, but based on some water test strips a friend gave me, it appears most of the sulphate does get taken up by the sodium and does not react with the calcium (fortunately the calcium gets taken up by the carbonate faster, at least while the bicarbonate is in much higher concentrations than the sulphate). Now, it's still unknown how the copper sulphate will react, i still have some of the copper chloride solution and i intend to fully use it up before i switch due to having a shortage of containers to store the dissolved copper.

[unfortunately-obsessed]

In honor to the eighth episode, let's have an overview of all things Magneto could do if the writers allowed him to

First of, Electric fields and magnetic fields are both manifestations of the electromagnetic field, different sides of the same coin. Electromagnetism acts over all existent materials in different forms. Here are three of them:

Ferromagnetism

Paramagnetism

Diamagnetism

Ferromagnetism is the basic and most know form of magnetism, affecting materials like iron, cobalt and adamantium. It doesn't affect materials like lead, so Magneto shouldn't be allowed to stop bullets

However, he should be allowed to stop the planet's rotation, affecting Earth's nickel magnetized iron core, making the whole planet his hostage.

Paramagnetism refers to materials whose magnetism disappears once the magnetic field is removed while ferromagnetism refers to materials that can retain their magnetic properties when the magnetic field is removed. Both are attracted towards magnetic field.

Y'know what material is paramagnetic? Carbon. Won't even say what this would entail.

On the opposite side, diamagnetism involves an extremely weak force of repelling. All materials are diamagnetic to an extent, but the interesting thing is that water is diamagnetic

So if we consider that Magneto's powers are limitless, he should be able to suspend his enemies not by the iron on their blood (iron in the blood isn't in its ferromagnetic form), but by the water. He could be able part the ocean by only a mere wish. He would have the Force

If he can generate magnetic fields, he can generate electricity. Yes, he would be able to create enough lightning it would scare Thor. But this also means that, by emitting electricity at the right frequency, Magneto would be able to produce ultraviolet, infrared, and by forcing a nuclear reaction through parting atoms, produce up all kinds of radiation including microwave rays

[element-tournament]

FINALS

CARBON:

Forms the basis of all life

What diamonds, coal, and pencil lead are made of

Used to make graphene, one of the strongest materials (one atom of thickness is 200x stronger than steel)

SILICON:

Not to be confused with Silicone

Could potentially be used to make life instead of carbon

Used in a lot of electronics, hence the name of silicon valley

ARGON:

Has a distinctive purple glow

used in neon signs

often mistaken as a pirate's favorite element

POTASSIUM:

Found in high quantity in bananas

burning it produces a light purple or red flame

the first metal to be discovered by electrolysis

STRONTIUM:

Used in cancer treatment

Used in toothpaste

The most accurate atomic clock (to one second in the 200 million years) uses strontium atoms

FLOURINE:

the most receptive and most electronegative of all the chemical elements

oxygen, helium, neon, and argon are the only elements fluorine can't react with

the only element that can react with noble gases, specifically xenon, krypton, and radon

BISMUTH:

the most diamagnetic metal (meaning it gets repelled by magnets instead of attracted)

Known for its unique shape and colorful style

PROMETHIUM:

the last lanthanoid to be discovered

PLUTONIUM:

Named after the dwarf planet Pluto

Was once thought to have been discovered by Enrico Fermi along with element 93, but he was actually mistaken. He named it Hesperium.

An unnaturally poor conductor of electricity

Used to make atomic bombs, even more powerful than uranium

Known by some as the "forbidden gummy"

COBALT:

Turns a vibrant blue when heated to extreme temperatures

Named after kobolds, who are "mythical, death-dealing goblins" (not the lizard kobold)

One of only three elements that are ferromagnetic at room temperature

[sciencesolutions]

[mpcomagnetics]

Magnetic Domains: Understanding the Foundation of Magnetism

Magnetic Domains: Understanding the Foundation of Magnetism Magnetic domains are the foundation of magnetism. In this post we’ll dive into the world of magnetic domains, and explore how they form, behave and the processes that determine their impact on magnetic materials. Understanding these will give you a deeper appreciation of how magnetism works in everyday applications. What are Magnetic…

[ihopeyoubothstaysafefromharm]

i've been worrying about the future so i drew robot! drarry about it

mecha!harry is built a little like that pokemon that wears its mother's skull - his breastplate was taken off his parents' co-piloted unit after their tragic death. the lightning bolt made of a diamagnetic material called bismuth (sourced from discarded riot gun bullets) and its main purpose is actually to act as a shield and not an attack weapon. draco has to wear gloves because he gets visions when his palms touch other living things. the sky has been green for 26 years.

[nakulsword]

Physics Book 1

~ According to me (plz don't refer to this for boards. This is for me only.)

Chapter 1 & 2

Potential of a point charge and dipole

Electric Field of Dipole (at axis and equitoria)

Equipotential surface.

Dipole in external field.

Potential energy due to dipole.

Gauss' law and its application (on straight conductor, sheet conductor, and thin spherical conductor)

Parallel plate capacitor.

Effect of dielectric inside capacitor.

Chapter 3 & 4

Drift Velocity.

Ohm's law & its limitations.

Wheatstone bridge.

Bio- Savart's law

Ampere's Circuital loop.

Solenoid.

Force between parallel current carrying wires.

Torque.

Honourable mentions: Kirchoff's rule.

Chapter 5 & 6

Diamagnetic, Paramagnetic, Ferromagnetic.

Lenz' law.

Motional emf.

Self inductance.

Mutual inductance.

Chapter 7 & 8

Purely resistive circuit.

Purely inductive circuit.

Purely capacitive circuit.

LCR circuit (power factor & resonance).

Transformer.

EM Wave spectrum.

Displacement current.

+ numericals (that I'll probably ignore for this exam)

[materialsscienceandengineering]

Magnetic levitation: New material offers potential for unlocking gravity-free technology

Researchers at the Quantum Machines Unit at the Okinawa Institute of Science and Technology (OIST) are studying levitating materials—substances that can remain suspended in a stable position without any physical contact or mechanical support. The most common type of levitation occurs through magnetic fields. Objects such as superconductors or diamagnetic materials (materials repelled by a magnetic field) can be made to float above magnets to develop advanced sensors for various scientific and everyday uses. Prof. Jason Twamley, head of the unit, and his team of OIST researchers and international collaborators have designed a floating platform within a vacuum using graphite and magnets. Remarkably, this levitating platform operates without relying on external power sources and can assist in the development of ultra-sensitive sensors for highly precise and efficient measurements. Their results have been published in the journal Applied Physics Letters.

Read more.

[zvaigzdelasas]

However, the video also stated that they have currently only verified the Meissner effect. Although this crystal exhibits diamagnetism, it is relatively weak and does not possess "zero resistance," and its overall behavior is similar to that of a semiconductor curve. The publisher believes that even if LK-99 has superconducting properties, they are only in trace amounts of superconducting impurities, unable to form a continuous superconducting path.[...]

The research team from Beihang University conducted tests on the synthesized LK-99 and found that its room-temperature resistance is not zero, and no magnetic levitation was observed. The paper states that the material exhibits characteristics similar to a semiconductor rather than a superconductor.

2 Aug 23

[max1461]

Seems like LK-99 is diamagnetic, as verified by... as yet unpublished(?) research by a Chinese team who posted a video on Bilibili, and a random guy with a "private workshop" who posted a video on twitter. The Chinese team say they could only test diamagnetism as they didn't produce flakes large enough to test resistance, but they're skeptical that other superconductor properties will replicate. Obvious internet videos without peer review are not a good source but it does give me kind of one tiny sliver of excitement that this might be real.

[earhartsease]

yo physicists - we were just reading about the differences in types of magnetism, and learning there are way more of them than we realised:

Diamagnetism, paramagnetism, and ferromagnetism are the three main types of magnetism seen in materials. Other types include antiferromagnetism, ferrimagnetism, superparamagnetism, and metamagnetism

but what we were trying to find out if you can help here is: is there an equivalent physics term for "is not magnetic at all"? is it just non-magnetic? or is it something-magnetic like the other words, perhaps amagnetic?

edit: it's nonmagnetic, thanks @delgrosso

[unfortunately-obsessed]

Remember this post I talked about eletromagnetism?

I did talk how the universe is permeated in eletromagnetism and yet Magneto wouldn't be able to stop bullets through the lead as it is not ferromagnetic (most bullets nowadays are made of lead)

I don't thinking I said it clearly enough, but he could still use paramagnetism to stop them, cuz as I said everything is affected by diamagnetism

And this got me thinking

...Oxygen is diamagnetic

So... He could deflect any projectile through controlling the air around him

And now I'm thinking about force fields that he used multiple times in the series. He can simply use manipulate magnetic fields into working as shields

But theorically, by using eletromagnetism and radiation, he can heat up air creating a field of ionised superheated air-plasma around him that could lessen shockwaves/blows too

Isn't that cool?