Name this  radiation discovered by Wilhelm Röntgen, used to observe bones.
The maximum energy of these things created by a given voltage is given by the Duane-Hunt law.   Like electrons, they were discovered using a Crookes tube. Riccardo Giacconi won his Nobel Prize  for figuring out how these could be used in astronomy, and Max von Laue won his Nobel Prize for   work on the diffraction of these things. These things were used by Rosalind Franklin to make an  image of DNA molecules, and these are measured by the Chandra Observatory. This electromagnetic  radiation is more energetic than ultraviolet light but less energetic than gamma rays. Name this  radiation discovered by Wilhelm Röntgen, used to observe bones.
The maximum energy of these things created by a given voltage is given by the Duane-Hunt law.  
{X}-{rays} [prompt on photons or electromagnetic radiation or EM radiation]