Unipolarmotor Example 9 Details

Motivation

Here the idea is to show that the magnetic spindle is turning and hanging up solely isolated from any electrical supply given by the axle. All the current is fed in and fed out via the two pairs of copper discs. It seems the magnetic spindle turns around by itself.

Some variations of this construction

There are only a few variations that work. The curcial thing is that a counter-torque can form, which is not the case if there is a fixed contact connection (Variation 4 is not working).

A loose (not firmly connected) contact can be made, for example, with a grinder, a roller (disc) or by means of a flexible contact strip (in the past also with liquid mercury).

Variation 1 and Variation 2 are working (a counter-torque can form)

Variation 3 works (counter-torque can form) but Variation 4 will never work (fixed connection)

The Unipolarmotor example 9 is of type Variation 2