Physics

SI Units

Tesla

magnetic field strength, aka magnetic flux density

Gauss: 1 G = 100 μT (cgs system)

  • 25 to 65 μT - Earth’s magnetic field (depends on latitude, longitude)
  • 5 mT - the strength of a typical refrigerator magnet
  • 1 T - magnet used to move a large amount of metal (like a car in a junkyard)
  • 1.5 T to 3 T - strength of medical MRI systems in practice, experimentally up to 17 T
  • 16 T - magnetic levitation of a live frog
    • Operation of this electromagnet used in the frog levitation experiment required 4 MW of power
  • 97.4 T - world record on Earth, strongest magnetic field produced by a “non-destructive” magnet (the Los Alamos National Laboratory)
    • held for approximately 1 millisecond
    • non-destructive: “This advance improves our ability to create non-destructive magnetic fields – higher-power magnets routinely rip themselves to pieces due to the large forces involved – that serve as tools to study the fundamental characterization of advanced materials such as graphene or high-temperature superconductors.”
  • 100 T - approximate magnetic field strength of a typical white dwarf star
  • 100 MT - 100 GT – magnetic strength range of magnetar neutron stars

references:

Astronomy