Many new conclusions Hilbert in the researches on magnetism has made. Here the cores from them.
The Earth represents a huge magnet.
Subjects from soft iron, during long time lying in one position, get magnetisation in a direction the north - the south.
Magnetic interactions happen two sorts - pushing away and an attraction.
At magnet heating its magnetic properties weaken.
And still, perhaps, most important conclusion made Hilbert. It managed for the first time to find out communication between the electric and magnetic phenomena. He has noticed that the electric attraction is much weaker magnetic, but is inherent in all bodies whereas magnetic it is found out only in some bodies. In other words, Hilbert has divided the observable phenomena on electric and magnetic which began to be investigated since then separately.