Old (big) mag cards?

[blackjetrock]

(07-05-2023 09:27 PM)johnb Wrote:  Just had a thought... magnetic coercivity is one of those parameters that you have to be careful to remember the mathematical definition, not the English one.

Because "high coercivity" here means "more resistant to coercion" (or "requires more coercian for the same amount of change in residual magnetism").

Whereas a naïve interpretation based only on language might lead you up the garden path of thinking "high coercivity" means "more easily coerced."

Yes, I never thought of it like that, but then I used to work on machines that measured coercivity, so I'm more familiar with the concept.

Andrew