GREAT advances have recently been made in the production of X-rays, chiefly by the employment of very heavy currents. The exposures necessary for producing radiographs of the thorax have been reduced ...

“The ability to use multiple metal targets in such a compact X-ray device is unprecedented. This opens the door for significant advances in portable XRF analysis,” said Dr. Carlos Camara, Chief ...

IT’S not often that cannons get used for target practice. These images show some of the first machines built to emit X-rays, now given a taste of their own medicine. The stark, ghostly quality of ...