Lonsdale's law

Lonsdale's law describes the maximum electromagnetic energy that can be emitted by a star's magnetic activity, such as flares or corona heating, as proportional to the star's magnetic field strength, size, and plasma properties. It predicts an upper limit to the luminosity produced by magnetic phenomena, helping scientists understand the limits of stellar activity. Essentially, it suggests that stronger magnetic fields and larger stellar sizes can lead to more energetic emissions, but there are natural constraints based on the star's physical conditions that prevent indefinite increases in energy output.