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… -
Figures 149-157. Plate Electrical Machines
- 1840
Figure 149. Hand Spiral consisting of two glass tubes with brass caps, the interior one being covered in a spiral form with spangles of tin foil, showing, when presented to an excited conductor, a continuous stream of…
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Figures 188 and 189. Electromagnetic Apparatus
- 1840
Illustrations for catalog listings. The first, Figure 188, depicts an Electro-magnetic Machine, "forming a powerful and portable apparatus for the application of medical electricity; also a highly interesting instrument…
