Re: Good source for "new" 5.25 and 3.5 inch floppy disks?

[glen herrmannsfeldt <gah@ugcs.caltech.edu>]

Steven Hirsch wrote:
(snip)

> Actually, coercivity is a physics thing.  It's a measurable property of 
> magnetic materials.  Now, whether the various types of 3.5" media differ 
> to any extent and whether those differences are significant, that's 
> another issue.

The wikipedia site I posted has it, though I didn't verify the numbers.

That site says 300 Oe and 600 Oe for 5.25in (DD and HD),
  600 Oe and 750 Oe for 3.5in (DD and HD).

For 5.25in the difference is large enough that it doesn't
seem to write at all.  For 3.5in, it might write, but not
so reliably.

-- glen