Fill groove of LP and electrify w laser turntable

Hello ,

First invention was to follow the longplay groove with magnetofluid drop with the moving direction of a magnet.
When magnetofluid drop moves in groove , it will vibrate and produce electricity in magnetic fluid.
We measure magnetic field difference with magnetometer and listen the long play.

Second invention is to fill the grooves with a conductor for example graphite powder and direct a laser beam on to filling.
Filling generate a magnetic field , we detect it with magnetometer

Best ,

Mustafa Umut Sarac