• Re: Could magnets be used for interstellar propulsion?

    From Guyton Balaban@bogatl@not.ru to sci.physics.relativity,sci.math on Tue Feb 3 22:15:03 2026
    From Newsgroup: sci.math

    imbecile Thomas 'PointedEars' Lahn puts the food in his mouth again:

    john larkin wrote:
    You also need a large _gradient_ of magnetic field.

    What is that even supposed to mean?

    It means that there is no perpetual motion, no free energy.

    My question was what "_gradient_ of magnetic field" is supposed to mean because the magnetic field is a _vector_ field, and the gradient is only defined for *scalar* fields.

    this cretin doesnt know what a gradient is in mathematics, nor that to a magnetic field is associated with its own strength.
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