rubber, as are also quarter of an inch at the supports for the the inner ends to pole pieces, which five-eighths of an will be seen at either inch at the outer side of the cylinder. ends. The lower The dielectric used disk, which is sta- as a covering for the tionary, carrying the pole pieces is… … arm of each presents a very conductor weird appear- passes under the lower disk, and presses its brush ance in a darkened room. The subject of the motive well that further explanation of the construction is against one of the 90° sectors of the stationary lower power of static electricity is one…
Internet Archive · Public domain (published before 1931). Free to use for anything.
