We are still working to fully understand how all of the fundamental forces emerge from their respective fields, so there’s still a lot that we don’t yet know about how magnetism works. Even top researchers feel like they’re missing part of the concept 😅
In the analogy, the blue and orange cars represent magnetic moments (spin) of electrons. I want to emphasize that the analogy hand-waves a lot of what is actually happening in the material in favor of simplicity.
A magnetic phase is a distinct state in which the atomic magnetic moments of a material organize. Some materials can change magnetic phases; e.g. heat iron past 770° and it loses it’s ability to be a magnet. Cool it back down and it’s ferromagnetic properties return. It literally changes magnetic phases.
There are (until recently) two phases of magnetism: ferromagnetic and antiferromagnetic. The other poster who replied said “dia and para”; their heart is in the right place, but their response is entirely incorrect.
Until now, there were two known magnetic phases: ferromagnetic and antiferromagnetic.
The best analogy I’ve seen, though significantly over-simplified, is a great way to visualize the basics magnetic phases. Think of any given material as being a highway, and the electromagnetic energy within that material as two types of cars: blue cars and orange cars. It may be useful to think of the highway as a “North/South” highway, as in magnetic poles, but again, that is a significant oversimplification, and only meant as an illustration, not an explanation of what is actually happening within the material at a quantum level.
A ferromagnetic “highway” is basically a one-way road; the conditions of the road only allow blue cars to move in a single direction, no other color or direction of travel is allowed. This phase attracts only blue cars moving in one direction, and repels orange cars, as well as blue cars moving in the opposing direction. This type of “highway” is what creates what we commonly know as magnetism.
An antiferromagnetic “highway” allows both colors to travel equally in both directions; this phase of motion has an equal amount of force in both directions regardless of a car’s direction or color, and so this type of “highway” is what we would find in non-magnetic materials.
The new phase of magnetism is called altermagnetism. In a conventional antiferromagnet, both kinds of cars generally experience the same road conditions. In an altermagnet, the roads effectively favor different kinds of cars depending on which direction they travel. Travel along one direction, and the blue cars might be favored. Travel along another, and the orange cars might be favored. Importantly, neither kind of car dominates the entire road.
That’s the unusual feature of altermagnetism: the car’s behavior depends on direction, even though the material has no net magnetization.
You are correct, but since some may read that and assume that all aviation fuel is leaded, I wanted to add more info.
Most people don’t know that “airplane fuel” and “jet fuel” are different. Jet fuel is not leaded. The fuel used by small, piston-driven prop engines is. Because small piston aircraft still use leaded fuel, aviation is still the largest source of airborne lead emissions. The FAA is working to phase it out by 2030.
The danger from leaded fuels don’t come from handling, but from the exhaust. The lead becomes breathable and enters the environment, exposing those who lived in urban areas and near roads to more lead than others.
The other poster isn’t wrong about airplane fuel being leaded, but that can be misleading because most people don’t know that “airplane fuel” and “jet fuel” are different. Jet fuel is not leaded, but the fuel used by small, piston-driven prop engines is.
Confused me as well, then I saw the header on the image says “Explain to me like I’m 80”
MAGAs in my family are so far lost in the sauce that they truly believe he’s the most fair and honest president in American history. They are so caught up in the right wing news machine that they don’t know how the regime’s policies are affecting the rest of America, and if they did, I don’t think they’d care because they’re old, rich, and have winning complexions.
Bandcamp is great, particularly if I want physical merch, but the artist isn’t touring near me, so I wouldn’t be able to get it from their show. I hadn’t heard of Qobuz, I’ll check that out!
I began using Tidal a couple years ago because it has the best artist payment schema compared to the other big streaming platforms, and it’s been wonderful. I transferred my playlists and stuff between the platforms, and aside from a few esoteric artists, everything that I had on Spotify was available on Tidal.
I’ve urged my spouse to make the change, but she listens to a lot of game and show soundtracks that aren’t listed on Tidal (yet?).
I might be out of the loop - what did Patreon and Bandcamp do?
I haven’t connected any appliances to my network, but I may try Zigbee.
I’m not optimistic about the future of home appliances. Without stronger privacy protections, there’s little stopping manufacturers from adding cellular modems to avoid the need for wi-fi to collect and transmit user data, with features/usability locked behind accepting ToS.
Racism is epigenetic Calvinball. There are no consistent rules, and rules are changed on the spot to whatever helps racists feel like they are winning in the moment.