[Bubier], Edward Trevert, 1858- [from old catalog] · Lynn, Mass., Bubier pub. co. · leaf 253
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 … Various Types of X-Ray Tubes. 252 ELECTRICITY AND ITS The fluoroscope is a device to be used in visualexaminations of opaque objects by means ofX-Rays. It consists of a wooden box made lighttight, and shaped as seen in the engraving. On the end to be held before the Crookes tubeis fastened a sheet…
Electricity
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