Magnets and Magnetic Fields

Speaker Magnet with flaw.
Speaker Magnet

View plane 3 / 16 inches above magnet.
3 / 16 inches above magnet

View plane 7 / 16 inches above magnet.
7 / 16 inches above magnet

View plane 15 / 16 inches above magnet.
15 / 16 inches above magnet

View plane 1  7/16 inches above magnet.
1  7 / 16 inches above magnet

Old style Cow Magnets.

Old style Cow Magnet.

Old style Cow Magnets.

I wish you could see this in 3D.

Could magnetic lines of force be helixes? This is a helix.
This is a Helix.

Weston's Direct-Reading Volt-Meter. Patented - Nov. 6, 1888 Nikola Tesla, almost for certain, had one of these in his lab.
Weston's Direct-Reading Volt-Meter

Weston Electrical Instrument Co.

Patented - Nov. 6, 1888

Meter #3926

Nikola Tesla, almost for certain, had one of these in his lab.

Magnitism - Gravity

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