1914 188 93 A new X-ray spectrograph.
1933 Nov. 14/1 In the next room, an associate was using an X-ray spectrograph. Beams of X-rays, deflected by the crystals of a metal, were printing dots..upon sensitive photographic plates.
2003 64 2481/2 The spectra have been studied with the X-ray spectrograph DRS-2.