Transactions of the American Institute of Electrical Engineers

(1) Without stroboscope.

[PEEK]

(3) With stroboscope-Neg.

[PEEK]

(2) With stroboscope-Pos.

[PEEK) FIG. 39-ONE OF TWO POLISHED STEEL RODS POINTED AT ENDS. Diameter 0.325 cm.-spacing 120 cm.-180,000 volts.

VOL. XXXI. 1912

A. I. E. E.

PLATE LIX

FIG. 40-ONE OF TWO PARALLEL STEEL RODS POINTED

(DIRTY).

AT ENDS

Without stroboscope.

FIG. 42-MECHANICAL VIBRATION OF PARALLEL WIRES.

[PEEK)

PLATE LXII

A. I. E. E.

VOL. XXXI, 1912

FIG. 43-PARALLEL WIRES AT SAME POTENTIAL, WITH

SPACINGS.

At left, view perpendicular to plane of wires.

At right, view in plane of wires.

[PEEK

DIFFERENT

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