[Bubier], Edward Trevert, 1858- [from old catalog] · Lynn, Mass., Bubier pub. co. · leaf 251
4 cells. The object of which you wish to get a shadowpicture must be placed between the Crookes tubeand the plate holder. By the aid of this new form of radiation we are RECENT APPLICATIONS. 249 enabled to photograph objects concealed in a box,a book, a letter case, etc., and even to lay bare… … FIGURE 3. chemistry, metallurgy, and other branches 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…
Electricity
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