5 ms·

neutron stars known as magnetars have the strongest magnetic fields, in the range of 10^8 to 10^11 tesla. The highest medical magnets used for MR currently go

neutron stars known as magnetars have the strongest magnetic fields, in the range of 10^8 to 10^11 tesla. The highest medical magnets used for MR currently go up to 7T.

phkahler 4y ago
I have a suspicion that the nuclear force is really just magnetism. That along with some relativistic effects are what holds the nucleus together. Possibly even what holds quarks together inside a baryon.
- JumpCrisscross 4y ago
  > nuclear force is really just magnetism You’re not alone. Grand unification theories [1] like supersymmetry are motivated by unifying the strong and electroweak forces [2][3]. > along with some relativistic effects This is theory of everything [4] talk. We don’t know enough about gravity to speak coherently about it. [1] https://en.m.wikipedia.org/wiki/Grand_Unified_Theory https://en.m.wikipedia.org/wiki/Grand_Unified_Theory [2] https://en.m.wikipedia.org/wiki/Electroweak_interaction https://en.m.wikipedia.org/wiki/Electroweak_interaction [3] https://openstax.org/books/physics/pages/23-3-the-unification-of-forces https://openstax.org/books/physics/pages/23-3-the-unificatio... read me first [4] https://en.m.wikipedia.org/wiki/Theory_of_everything https://en.m.wikipedia.org/wiki/Theory_of_everything
  - phkahler 4y ago
    >> > along with some relativistic effects >> This is theory of everything [4] talk. We don’t know enough about gravity to speak coherently about it. I would assert that there is an electrostatic equivalent of gravitational black holes. In my world, quarks exist inside an event horizon within a baryon and that's part of what keeps it stable. The other part being electrostatic attraction of course: +2 -1 +2 << this configuration of charges will attract. Orbiting at speed C will help, and will also create a magnetic field. What keeps it dynamically stable forever though... I dunno.
    - deleted 4y ago
      [deleted]
- mr_mitm 4y ago
  You're essentially talking about a GUT: https://en.wikipedia.org/wiki/Grand_Unified_Theory https://en.wikipedia.org/wiki/Grand_Unified_Theory
- XorNot 4y ago
  One problem there: magnetism is "just" the relativistic correction to electrostatic potential between charges observed in different relativistic frames of reference.
  - deleted 4y ago
    [deleted]
  - whatshisface 4y ago
    It can appear like that when you have one particle, but if you take two charged particles moving at different speeds, there won't be a reference frame that gets rid of both magnetic fields.
    - drdeca 4y ago
      Can you have a relativistic theory which has an electrostatic interaction without the theory also having magnetism? If not, I, don’t see what’s wrong with their claim?
      - consilient 4y ago
        A rough equivalent: "momentum is 'just' the relativistic correction to energy between masses observed in different relativistic frames of reference". It might be vaguely trueish if we're very generous in interpreting the "just", but it's absolutely the wrong way to think about things. The electromagnetic field tensor is the real object here. The electric and magnetic fields are artifacts of a particular choice of coordinate system.
        deleted 4y ago
        [deleted]
- seiferteric 4y ago
  It would be interesting since magnetism is related to electric field is related to weak field... It's like all forces are the same but altered through some rotation of sorts.
- whatshisface 4y ago
  Protons have a magnetic moment and we can already measure it. It is very small, much too small to hold a nucleus together. (Please ignore the GUT comments they're missing the point. :-) GUTs apply at high energies only. )
- dontwearitout 4y ago
  Forces due to a dipole effect (like magnetism) fall off like 1/r^3, while the strong nuclear force is exp(-x). There might be some analogy between the two in some sort of unification theory, but the power law suggests that it's fundamentally an unrelated phenomenon to me.
  - phkahler 4y ago
    >> Forces due to a dipole effect (like magnetism) fall off like 1/r^3, while the strong nuclear force is exp(-x) I thought I read the strong force also dropped like 1/r^3, but also that it was very hard to characterize it at all.
sand_castles 4y ago
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neutron stars known as magnetars have the strongest magnetic fields, in the range of 10^8 to 10^11 tesla. The highest medical magnets used for MR currently go up to 7T.

phkahler 4y ago

I have a suspicion that the nuclear force is really just magnetism. That along with some relativistic effects are what holds the nucleus together. Possibly even what holds quarks together inside a baryon.

JumpCrisscross 4y ago
> nuclear force is really just magnetism You’re not alone. Grand unification theories [1] like supersymmetry are motivated by unifying the strong and electroweak forces [2][3]. > along with some relativistic effects This is theory of everything [4] talk. We don’t know enough about gravity to speak coherently about it. [1] https://en.m.wikipedia.org/wiki/Grand_Unified_Theory https://en.m.wikipedia.org/wiki/Grand_Unified_Theory [2] https://en.m.wikipedia.org/wiki/Electroweak_interaction https://en.m.wikipedia.org/wiki/Electroweak_interaction [3] https://openstax.org/books/physics/pages/23-3-the-unification-of-forces https://openstax.org/books/physics/pages/23-3-the-unificatio... read me first [4] https://en.m.wikipedia.org/wiki/Theory_of_everything https://en.m.wikipedia.org/wiki/Theory_of_everything
- phkahler 4y ago
  >> > along with some relativistic effects >> This is theory of everything [4] talk. We don’t know enough about gravity to speak coherently about it. I would assert that there is an electrostatic equivalent of gravitational black holes. In my world, quarks exist inside an event horizon within a baryon and that's part of what keeps it stable. The other part being electrostatic attraction of course: +2 -1 +2 << this configuration of charges will attract. Orbiting at speed C will help, and will also create a magnetic field. What keeps it dynamically stable forever though... I dunno.
  - deleted 4y ago
    [deleted]
mr_mitm 4y ago
You're essentially talking about a GUT: https://en.wikipedia.org/wiki/Grand_Unified_Theory https://en.wikipedia.org/wiki/Grand_Unified_Theory
XorNot 4y ago
One problem there: magnetism is "just" the relativistic correction to electrostatic potential between charges observed in different relativistic frames of reference.
- deleted 4y ago
  [deleted]
- whatshisface 4y ago
  It can appear like that when you have one particle, but if you take two charged particles moving at different speeds, there won't be a reference frame that gets rid of both magnetic fields.
  - drdeca 4y ago
    Can you have a relativistic theory which has an electrostatic interaction without the theory also having magnetism? If not, I, don’t see what’s wrong with their claim?
    - consilient 4y ago
      A rough equivalent: "momentum is 'just' the relativistic correction to energy between masses observed in different relativistic frames of reference". It might be vaguely trueish if we're very generous in interpreting the "just", but it's absolutely the wrong way to think about things. The electromagnetic field tensor is the real object here. The electric and magnetic fields are artifacts of a particular choice of coordinate system.
      - deleted 4y ago
        [deleted]
seiferteric 4y ago
It would be interesting since magnetism is related to electric field is related to weak field... It's like all forces are the same but altered through some rotation of sorts.
whatshisface 4y ago
Protons have a magnetic moment and we can already measure it. It is very small, much too small to hold a nucleus together. (Please ignore the GUT comments they're missing the point. :-) GUTs apply at high energies only. )
dontwearitout 4y ago
Forces due to a dipole effect (like magnetism) fall off like 1/r^3, while the strong nuclear force is exp(-x). There might be some analogy between the two in some sort of unification theory, but the power law suggests that it's fundamentally an unrelated phenomenon to me.
- phkahler 4y ago
  >> Forces due to a dipole effect (like magnetism) fall off like 1/r^3, while the strong nuclear force is exp(-x) I thought I read the strong force also dropped like 1/r^3, but also that it was very hard to characterize it at all.

sand_castles 4y ago

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