22 Jun
2005
22 Jun
'05
3:43 p.m.
Ok, use a magnetic fingerprinting powder on it ;)
Actually, I've heard (and
seen) there IS a liquid solution that will let you visibly see the dots on
mag tape.
There is. It generally goes under the name of 'Magnasee' and is a
colloidal suspension of iron oxide in some suitable volatile liquid. I
have no idea where you get it nowadays, though.
-tony