nemfrog:

Plate 3. Positive phase of electric energy. A System of Instruction in X-Ray Methods and  Medical Uses of Light, Hot-Air, Vibration and High-Frequency Currents. 1902.

nemfrog:

Plate 3. Positive phase of electric energy. A System of Instruction in X-Ray Methods and  Medical Uses of Light, Hot-Air, Vibration and High-Frequency Currents. 1902.

nemfrog:

Fig. 7. The Evolution of Forces. Gustave Le Bon. 1908.
"Lines of force surrounding an insulated electric body."

nemfrog:

Fig. 7. The Evolution of Forces. Gustave Le Bon. 1908.

"Lines of force surrounding an insulated electric body."

nemfrog:

Fig. 8. The Evolution of Forces. Gustave Le Bon. 1908.
"Mutual repulsion of lines of force between two bodies charged with electricity of the same sign."

nemfrog:

Fig. 8. The Evolution of Forces. Gustave Le Bon. 1908.

"Mutual repulsion of lines of force between two bodies charged with electricity of the same sign."

nemfrog:

Total solar eclipse of June 8, 1918. Developed to show extension of the corona. Smithsonian Miscellaneous Collections. 1919.

nemfrog:

Total solar eclipse of June 8, 1918. Developed to show extension of the corona. Smithsonian Miscellaneous Collections. 1919.

nemfrog:

The Ellectro-Therapeutic Guide, or, A Thousand Questions Asked and Answered. 1907.

nemfrog:

The Ellectro-Therapeutic Guide, or, A Thousand Questions Asked and Answered. 1907.