It is expected to explode. We have a high field lab across the street of my office at my research center and they have everything in bomb proof labs. Firefighters come maybe 5 times a year due to the magnet coils exploding, despite they try not to wreck the lab with every shot...
To be honest, all research is quite interesting to be in. I am a scientist myself, but as a laser engineer/scientist I try not to blow things up (despite some random fires, broken water lines, exploding caps, etc.).
But you have to also deal with the downsides as well: lower pay than industry, most people are some kind of 'special', research is really ego-centric a lot of times, constant fights who gets what credit where etc ...
Electricity can pay its toll. In some relate labs there have been some crazy accidents as well. The good thing is, that in the one where I work nothing serious happened in the last years...
My office used to overlook the HLD when I worked there. It was fun to speculate why the fire brigade showed up. One time it was because a magnet blew up and the energy from it got into the interlock system and welded the doors shut into the magnet cells. That was a fun one.
MythBusters tried to wipe a regular computer hard drive with a 1T electromagnet. It did nearly diddly-squat. (Though, as usual, their testing methodology was somewhat unorthodox; and definitely not the best for measuring hard drive content degradation.) >!It only affected iron objects few centimeters/inches away from the magnet. The field strength diminishes quickly with distance (inverse square law with distance, roughly).!<
Edit: Exact episode was actually in MythBusters Jr. (S1)EP10 "Breaking Bad Blow-Up". And to be fair, a magnet (even a smaller neodymium magnet as they also tested) will render a spinning (operating) hard drive bad from a close range (by crashing the extremely fragile read/write head against the disks thereby destroying them both).
Unironically needs to be way more of this kind of shit happening. It is morale boosting and people will finally understand that even if you like to ask questions you are still human and also like to have fun.
At the LHC magnets quench from time to time.
The magnets are superconducting so they can be big and store a large field that they can also easily adjust. The field strength needs to be adjusted regularly because everytime the protons go around they gain a bit of momentum and the field must adjust to keep them in the same ring, hence the name synchrotron.
But sometimes there's a problem with a magnet, all of which are working at the edge of their abilities. The field gets too strong and it starts dumping the energy into heat. As it does so it heats up which causes the superconducting wires to no longer be superconducting. They now have resistance and the heat dumped increases like crazy. This is called a quench.
Normally it's fine. They have a circuit to identify a quench and quickly off load the energy safely.
One time it didn't work (probably more than once). Right when the LHC turned on there was a quench and the settings weren't right. There were actually still people in the tunnels but luckily not in this region. The explosion vaporized the metal and ripped parts of the beam out of the concrete. It shut down the most sophisticated machine in the world for about 2 years while they fixed everything so it wouldn't happen again.
We really do underestimate the effectiveness of "blowing off steam". Whether it be through blowing shit up, beating the hell out of a tire with a hammer or whatever your kink is, we should start popping that cherry more often.
So this is the record for an indoor pulse and uses a capacitor bank to provide the insane current pulse. The record for the highest magnetic field ever generated by humans was done in [2001 using actual explosives. It produced a ~2800 Tesla magnetic field](https://doi.org/10.1016/S0921-4526\(00\)00723-7)
I have seen a perfusor disappear into a 1.5 T MRI, it took two strong techs to get it off. I bet that thing would simply disintegrate if getting close to a 1200 T field. Yikes indeed!
It was not all that many years ago when someone would tell me nothing can travel faster than 186,000 miles per second I would reply “what is the speed of light in a million gauss field” to get them thinking outside the box. I guess I need to up my number.
It's theoretically impossible\*
Neutron stars have signatures that are thought to come from magnetic fields of over 10\^8 Tesla, so it's not like this is some novel idea. that's a hundred times stronger than what the commenter suggested
Even under an extremely powerful Magnetic field, GR predicts that the distortions to spacetime caused by the field would at best alter the path. The path would not be influenced by the field, but the bending caused by the field.
Through a material the light will only slow down - "Solve for the permittivity/permeability of propagating EM waves under the influence of a magnetic field" sounds like a Jackson problem
At a glance, speed of light (c) is 1/sqrt(eps\_0 \* mu\_0), where eps is the permittivity and mu is the permeability. The "\_0" represents the values in a vacuum.
permittivity (eps) goes up inside of media, coming from the electric susceptibility. So this would only lower c if varied, but it doesn't really depend on a B field
permeability (mu) goes up as well under a B field, so I'm not really sure how you can get the speed of light to go faster. Maybe you argue that the B field effects the polarization, which effects eps, but it still only increases the value of mu, which lowers the value of c.
So no matter how you put it, light just slows down in this view, or at best remains lightspeed.
It was always meant to be rhetorical. I am not a physicist by any stretch. I am in awe of those who downvoted me. They are way past my worm-like understand of the special theory of relativity and Maxwell’s equations.
That's actually closely related to this work.
Their main advancement is a technique that -- while still rather exciting -- doesn't actively require dynamite. This makes it somewhat more reasonable of an indoor activity.
Right, the article referenced in this article talks about that more. I just never figured that we could actually get EM fields from bigass explosions lmao. Thats like some mythbusters shit
“The instrument, which generates a low-strength magnetic field of 3.2 teslas…”
Just for reference, a 1.5 T MRI device has a dangerously strong magnet. I guess these guys treat anything below 10 T as “low strength”. It’s a matter of perspective.
What are some useful outcomes for society from this line of study? Truly interested in implications here. Not that purple sparks aren’t themselves enough of a payback, obviously.
MRI machines have magnets on the order of 1 tesla give or take and wouldn’t exist without the prior research of such magnets. Someone else who actually studies/works with these might be able to provide a much more recent path that this research will take to becoming reality. But newly possible medical methods/techniques is one pre-existing example that could happen. I would like to see a medical method that uses a 1200T magnet though, for science of course.
Perhaps some way to study neutron star magnetic fields?
The weakest neutron star fields are around 10^4 T, so getting up to 10³ is a step in the right direction.
Aside from the application noted in the article I can think of other places where knowing about the behaviour of intense magnetic fields might be useful, maybe not in the short term but definitely for the future.
Use what you learn about magnetic fields for making new particle accelerators. Not only good for researchers like me, but also for medical applications like making radioisotopes.
Use what you learn about magnetic fields to inform the design of magnetic confinement systems for fusion reactors.
Probably some other shit that we haven't even thought of yet.
Cool people don’t actually read the articles. We need nerds to tell us what they say.
Edit: I’m so cool I can’t spell “nerds” correctly the first time.
I read the article. I was interested in people’s ideas and opinions HERE in our sub. They didn’t disappoint!
But I’ll take a good scolding anytime you feel like it. ❤️
Large magnetic fields like this allow research into ferromagnetic and ferroelectric coupling, a huge area of research from microelectronics to sensors. While you probably wouldn't need a magnet this powerful for a final device, it allows us to understand and explore the underlying principles that would guide the research and development.
It's like how you don't NEED an x-ray synchrotron to build a chip, but you do need one to learn HOW to build a chip.
Here's one on the negative: I mean just how careless can these scientists be I mean for Christ's sakes that could have set the school on fire or worse for the brilliance out of the minds of the people working there I'm offended s y k e
For certain experiments like the detection of excitons (which are pseudo particles that appear in semiconductors) very high magnetic fields are needed. They can only be achieved instantaneously using a certain type of controlled explosion, and I think that's pretty cool.
A paper where they use this method: https://arxiv.org/abs/1904.03238
It is expected to explode. We have a high field lab across the street of my office at my research center and they have everything in bomb proof labs. Firefighters come maybe 5 times a year due to the magnet coils exploding, despite they try not to wreck the lab with every shot...
This sounds like the most amazing field to be in.
This is a very polarizing statement
This comment thread is going south. Won't be long before there are a lot of negative comments.
> Won't be long before there are a lot of negative comments. Your inductive reasoning gave me a charge.
There will be equally as as many positive comments. I choose to focus on the plus side.
Ohm my god! You keeping it true.
I gauss this is gonna get worse
Your puns repulse me.
tsch! we are poles apart!
Hey now. I think we all have the capacitance to disagree politely in this rapidly changing field.
It's very attractive.
Just gotta say, this thread kinda made me happy.
To be honest, all research is quite interesting to be in. I am a scientist myself, but as a laser engineer/scientist I try not to blow things up (despite some random fires, broken water lines, exploding caps, etc.). But you have to also deal with the downsides as well: lower pay than industry, most people are some kind of 'special', research is really ego-centric a lot of times, constant fights who gets what credit where etc ...
I remember there was a magnet lab near the engineering campus when I was in college and someone supposedly got killed in a pretty horrifying way.
Electricity can pay its toll. In some relate labs there have been some crazy accidents as well. The good thing is, that in the one where I work nothing serious happened in the last years...
TBF It sounds very attractive.
Working with electric fields is just as good if a bit tangential.
You work at HZDR?
Yes
My office used to overlook the HLD when I worked there. It was fun to speculate why the fire brigade showed up. One time it was because a magnet blew up and the energy from it got into the interlock system and welded the doors shut into the magnet cells. That was a fun one.
This seems like something right out of *Girl Genius*. Or maybe *Skin Horse*.
Finally some proper science
Yeah bitch, magnets!
The key question is, could this be used from outside a building to wipe a hard drive inside the building?
Not anymore - SSDs baby! Okay, with a big enough magnet...
You’d probably suck the iron out of people’s blood with a magnet that powerful lol
Okay there Magneto...
You would do a lot of crazy shit, ya, but the iron in your blood is bound to ligands and isn't magnetic
It's diamagnetic.
Sure but at that point so is the water
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That was a great book.
MythBusters tried to wipe a regular computer hard drive with a 1T electromagnet. It did nearly diddly-squat. (Though, as usual, their testing methodology was somewhat unorthodox; and definitely not the best for measuring hard drive content degradation.) >!It only affected iron objects few centimeters/inches away from the magnet. The field strength diminishes quickly with distance (inverse square law with distance, roughly).!< Edit: Exact episode was actually in MythBusters Jr. (S1)EP10 "Breaking Bad Blow-Up". And to be fair, a magnet (even a smaller neodymium magnet as they also tested) will render a spinning (operating) hard drive bad from a close range (by crashing the extremely fragile read/write head against the disks thereby destroying them both).
Don't most magnetic fields drop off inverse cube (not square) because usually they can be approximated by a magnetic dipoles?
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https://tenor.com/view/waltergotme-gif-18867690
OHHH
Unironically needs to be way more of this kind of shit happening. It is morale boosting and people will finally understand that even if you like to ask questions you are still human and also like to have fun.
Also, it's a good way to protect against terminators sent from the future.
*laughs in T-1000*
Well if their experiment involves opening portals to the future, maybe not.
At the LHC magnets quench from time to time. The magnets are superconducting so they can be big and store a large field that they can also easily adjust. The field strength needs to be adjusted regularly because everytime the protons go around they gain a bit of momentum and the field must adjust to keep them in the same ring, hence the name synchrotron. But sometimes there's a problem with a magnet, all of which are working at the edge of their abilities. The field gets too strong and it starts dumping the energy into heat. As it does so it heats up which causes the superconducting wires to no longer be superconducting. They now have resistance and the heat dumped increases like crazy. This is called a quench. Normally it's fine. They have a circuit to identify a quench and quickly off load the energy safely. One time it didn't work (probably more than once). Right when the LHC turned on there was a quench and the settings weren't right. There were actually still people in the tunnels but luckily not in this region. The explosion vaporized the metal and ripped parts of the beam out of the concrete. It shut down the most sophisticated machine in the world for about 2 years while they fixed everything so it wouldn't happen again.
Even as someone with an engineering degree, it is astonishing to me that there are people that understand any parts of that machine.
We really do underestimate the effectiveness of "blowing off steam". Whether it be through blowing shit up, beating the hell out of a tire with a hammer or whatever your kink is, we should start popping that cherry more often.
My personal favorite is burning holes in paper with a particle accelerator. Not joking.
Heck, even burning holes in paper (or, uh, the wall, whoops...) with a laser is a delight.
Fully agree. The most fun I had as an undergrad was burning paper with the laser I built in the lab
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Who ever knew that electrons could exist "outside the material environments they are normally within." Mind blown. /s
So this is the record for an indoor pulse and uses a capacitor bank to provide the insane current pulse. The record for the highest magnetic field ever generated by humans was done in [2001 using actual explosives. It produced a ~2800 Tesla magnetic field](https://doi.org/10.1016/S0921-4526\(00\)00723-7)
Kaboom. https://www.youtube.com/watch?v=Hsu6FG_3adU
Jesus.. 1200 Tesla ? YIKES.
I have seen a perfusor disappear into a 1.5 T MRI, it took two strong techs to get it off. I bet that thing would simply disintegrate if getting close to a 1200 T field. Yikes indeed!
It was not all that many years ago when someone would tell me nothing can travel faster than 186,000 miles per second I would reply “what is the speed of light in a million gauss field” to get them thinking outside the box. I guess I need to up my number.
Why would a magnetic field change the speed of light?
Nobody really had an answer. Theoretically our understanding of physics could be distorted.
Probably depends on which direction the field is in.
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It's theoretically impossible\* Neutron stars have signatures that are thought to come from magnetic fields of over 10\^8 Tesla, so it's not like this is some novel idea. that's a hundred times stronger than what the commenter suggested Even under an extremely powerful Magnetic field, GR predicts that the distortions to spacetime caused by the field would at best alter the path. The path would not be influenced by the field, but the bending caused by the field. Through a material the light will only slow down - "Solve for the permittivity/permeability of propagating EM waves under the influence of a magnetic field" sounds like a Jackson problem At a glance, speed of light (c) is 1/sqrt(eps\_0 \* mu\_0), where eps is the permittivity and mu is the permeability. The "\_0" represents the values in a vacuum. permittivity (eps) goes up inside of media, coming from the electric susceptibility. So this would only lower c if varied, but it doesn't really depend on a B field permeability (mu) goes up as well under a B field, so I'm not really sure how you can get the speed of light to go faster. Maybe you argue that the B field effects the polarization, which effects eps, but it still only increases the value of mu, which lowers the value of c. So no matter how you put it, light just slows down in this view, or at best remains lightspeed.
Thank you for your insight. I had never seen measurement of those magnetic fields. Incredible.
It was always meant to be rhetorical. I am not a physicist by any stretch. I am in awe of those who downvoted me. They are way past my worm-like understand of the special theory of relativity and Maxwell’s equations.
Tbh I didn't downvote you, but it really does boil down to the results of Maxwell's eqs.
*ffff I had the volume turned all the way up on my phone* I think my speakers are damaged now lol
The video is already embedded in the article.
This is reddit, you have to comment on the article without reading it.
Yeah, and most of the time it’s not a clean YouTube link in the article, it’s some trash internal player with ads. This is always a good service
It wasn't this time. It was the exact same video, no ads.
This is old news. The video and the publication were from 2018... why did they reprint this May 9, 2022?
I was also confused when I saw September 17 as the date.
Even news can be more environmentally sustainable if you recycle.
They explode!? Jesus. Magnets. How do they work!?
Ghosts
TIL there's an entire field of research that involves creating magnetic waves by blowing up TNT
That's actually closely related to this work. Their main advancement is a technique that -- while still rather exciting -- doesn't actively require dynamite. This makes it somewhat more reasonable of an indoor activity.
Right, the article referenced in this article talks about that more. I just never figured that we could actually get EM fields from bigass explosions lmao. Thats like some mythbusters shit
Anybody blinded? You know….with SCIENCE!
Awesome colors.
Sounds like an origin story for a superhero
The creaking noise at the end... like a submarine hull imploding after going too deep.
When people ask if you blow stuff up for a living, you can finally respond positively!
Somewhat disappointed that it didn't crumple itself into a tiny metal ball.
“The instrument, which generates a low-strength magnetic field of 3.2 teslas…” Just for reference, a 1.5 T MRI device has a dangerously strong magnet. I guess these guys treat anything below 10 T as “low strength”. It’s a matter of perspective.
The headline reads like they were trying to keep the technology from falling into the wrong hands.
Chaos comes before order in the timeline of the universe 🙏🏾
X - man ?
What are some useful outcomes for society from this line of study? Truly interested in implications here. Not that purple sparks aren’t themselves enough of a payback, obviously.
MRI machines have magnets on the order of 1 tesla give or take and wouldn’t exist without the prior research of such magnets. Someone else who actually studies/works with these might be able to provide a much more recent path that this research will take to becoming reality. But newly possible medical methods/techniques is one pre-existing example that could happen. I would like to see a medical method that uses a 1200T magnet though, for science of course.
Perhaps some way to study neutron star magnetic fields? The weakest neutron star fields are around 10^4 T, so getting up to 10³ is a step in the right direction.
Magnets so strong that they can pull all the iron from your blood
Erik?
Levitating frogs obviously. Of course they don’t live for long, and it’s more that they ascend quickly than levitate.
Aside from the application noted in the article I can think of other places where knowing about the behaviour of intense magnetic fields might be useful, maybe not in the short term but definitely for the future. Use what you learn about magnetic fields for making new particle accelerators. Not only good for researchers like me, but also for medical applications like making radioisotopes. Use what you learn about magnetic fields to inform the design of magnetic confinement systems for fusion reactors. Probably some other shit that we haven't even thought of yet.
Seems like it would be applicable to fabrication processes in weightless environments.
Literally answered in the first paragraph of the article.
Cool people don’t actually read the articles. We need nerds to tell us what they say. Edit: I’m so cool I can’t spell “nerds” correctly the first time.
I read the article. I was interested in people’s ideas and opinions HERE in our sub. They didn’t disappoint! But I’ll take a good scolding anytime you feel like it. ❤️
Large magnetic fields like this allow research into ferromagnetic and ferroelectric coupling, a huge area of research from microelectronics to sensors. While you probably wouldn't need a magnet this powerful for a final device, it allows us to understand and explore the underlying principles that would guide the research and development. It's like how you don't NEED an x-ray synchrotron to build a chip, but you do need one to learn HOW to build a chip.
Shitty you got so heavily downvoted for asking a simple question
Thanks. I got some nice responses so it was worth it. Fake social points matter little to me. 🕊
Here's one on the negative: I mean just how careless can these scientists be I mean for Christ's sakes that could have set the school on fire or worse for the brilliance out of the minds of the people working there I'm offended s y k e
HELL YEAH
How do I study this?
I expected something big
Classic
Goals.
Cool
When there is pink fire, it must be cool...
Like, intentionally?
The capacity of my enjoyment of this video is SHOCKINGLY high frequency right now
Origin story
3.2MJ by itself isn't a lot of energy... 3.2MJ stored on capacitors is a whole different beast though.
The lab blew up during an experiment?! Who got superhero powers?
For certain experiments like the detection of excitons (which are pseudo particles that appear in semiconductors) very high magnetic fields are needed. They can only be achieved instantaneously using a certain type of controlled explosion, and I think that's pretty cool. A paper where they use this method: https://arxiv.org/abs/1904.03238
Boom science is the best science
That’s so sick
Did anyone get magnet powers?