[Bubier], Edward Trevert, 1858- [from old catalog] · Lynn, Mass., Bubier pub. co. · leaf 252
nches ofscience is at present inestimable. The apparatus necessary to produce these raysis a Dynamo, Battery, or a Static machine, an In-duction Coil and a Crookes tube or its equivalent;for example, an incandescent lamp with its fila-ment broken and electrodes properly placed, andthe bulb… … FIGURE 4. was lying upon the plate holder. The dark partis a metal cap containing the rubber eraser. Asyou will see, the lead shows quite distinctly. RECENT APPLICATIONS. 251
Electricity
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
