Search Results
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Figures 109-112. An Electric Machine and Electrometers
- 1840
Figure 109. Double 18-ich Electrical Machine a very splendid and powerful instrument, on Woodward's principle.
Figure 110. Harris's Unit Jar Electrometer with graduated slider, for charging other Leyden jars, or… -
Figures 113-123. Plate Electrical Machines
- 1840
Figure 113. Henley's Quadrant Electrometer with graduated arc, for experiments with accumulated electricity.
Figure 114. Bennet's Gold-leaf Electroscope, with Singer's Improvement whereby the instrument is better… -
Figures 124-135. Plate Electrical Machines
- 1840
Figure 124. Medical Jars mounted with Lane's discharging Electrometer to regulate the intensity of shock given to a patient.
Figure 125. Electrical Cannon for firing a mixture of hydrogen and atmospheric air by a spark… -
Figures 136-148. Plate Electrical Machines
- 1840
Figure 136. Egg Stand for passing the charge of a Leyden jar through eggs, oranges, &c. whereby they become luminous in a darkened room.
Figure 137. Electrical Swing for showing the repulsion of bodies similiarly… -
The Gyroscope
- 1870 – 1900
Illustration of a gyroscope, an apparatus that exemplifies the laws of conservation of angular momentum, meaning it will maintain rotational movement in a plane of rotation in spite of the force of gravity. The…
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Preparation of Metallic Iron
- 1870 – 1900
Illustration showing an apparatus used to generate an environment in which iron is able to ignite with oxygen at room temperature. The illustration is labeled to indicate a source of hydrogenated gas, a desiccative…
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Smee's Cell and Smee's Battery
- 1870 – 1900
Illustrations of the electric cell and battery apparatus developed by Alfred Smee (1818-1877). The cell consists of two positively charged zinc plates and one negatively charged platinized silver plate immersed in…
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The Electric Machine
- 1870 – 1900
Illustration depicting an Electric Machine, or a device used to convert mechanical energy into electrical energy to store a static positive charge. The device operates by turning a glass plate between two metal-coated…
