Visual display apparatus for electrical signals recorded on a ma

Details Visual display apparatus for electrical signals recorded on a ma Visual display apparatus for electrical signals recorded on a ma

1980-05-12

1982-08-24

Sikes, William L.

G02F 101

Patent

active

043458203

ABSTRACT:
The apparatus for the visual display of electrical signals recorded on a magnetic medium or support is in the form of a "magnifying glass" which is a plate or sheet of transparent material in which there is a dimple closed by a membrane. The volume of the dimple is filled by a mild ferrite dispersion in a liquid. Under the action of the magnetic field, the ferrite particles are displaced and give an image of the magnetic state of the media.

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