Henry and Hora's modern electricity; a practical working encyclopedia (1915)
Henry, James. [from old catalog], Hora, Karel Jan, 1881- [from old catalog] joint author · Chicago, Laird & Lee, inc. · leaf 310
Fig. 146. ELECTRICAL ENGINEERING 307 radiograph of a skull is shown opposite page 15. Time ofexposure was only a minute. In this picture it may be seen(see dark spots) that some rays penetrated the bones of theskull and affected the plate, which in this case was anespecially prepared radiographic… … Fig. 147. the frontal cavity of the skull. A radiograph of a rat isshown in fig. 147. It clearly shows the bones of the ratdarker than the flesh. Fig. 148 shows the radiograph of ahuman chest. X-rays though a recent invention, were adoptedso rapidly in surgical practice that there is now hardly…
Electrical engineering
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