suff

Magnets such as those NdFeB magnets (N35 grade with nickel surface coating, HKCM Article No. 9963-73617 and HKCM Article No. 9962-61814) weren’t tested back then, I guess.

Although the magnetic interaction, i.e. the normal load between the two layers monotonically decreases with increasing h, 〈Fₓ〉exhibits a clear peak around h₀ = 9 mm. This is in strong contradiction with Amonton’s empirical first law, which claims that sliding friction is proportional to the load ³³.

We (soon) have a proofread internet for the paying class.

https://curlie.org/ is another web directory. Looks almost the same.