DePalma created an N machine which converts rotation into electric energy by spinning magnets at very high speed producing very high currents. This was also used in a power plant in India. Torsion experiments included results of changes in the speed of plant growth, synchronization of spinning pendulums, gravitational effects, and even an unconventional ball-bearing motor which runs only when turned in the direction spun with high current.
This video is full of experiments run by Peter Lindemann and Eric Dollard. One of these experiments is based on a regular popular plasma ball, but generating confined shapes that resemble stars and galaxies in a burnt out bulb. Other experiments include dielectric field demonstrations, the N-machine, music in sparks, and branch structures cut into wood.
At 1:44:00 you will find the display of star or galaxy shapes formed inside a bulb.
1:26:30 is the branch structure burned into wood and music from sparks.
47:30 the beginning of the N-machine segment.
The very beginning explains dielectricity and magnetism.